{"id":793,"date":"2026-10-04T05:06:24","date_gmt":"2026-10-04T05:06:24","guid":{"rendered":"https:\/\/dentaltransitions.com\/articles\/california-dso-affiliation-process\/"},"modified":"2026-10-04T05:06:24","modified_gmt":"2026-10-04T05:06:24","slug":"california-dso-affiliation-process","status":"publish","type":"post","link":"https:\/\/dentaltransitions.com\/articles\/california-dso-affiliation-process\/","title":{"rendered":"The California DSO Affiliation Process: A Step-By-Step Guide"},"content":{"rendered":"<h2 id=\"key-takeaways\">Key Takeaways For California Dentists<\/h2>\n<ul>\n<li>The California DSO affiliation process follows a regulated, document-heavy sequence shaped by the PC-MSO structure and 2026 laws SB 351 and AB 1415.<\/li>\n<li>Owners who complete a diligence-grade EBITDA valuation before buyer conversations can reduce the risk of re-trading during the buyer\u2019s quality-of-earnings review.<\/li>\n<li>Key documents, including the NDA, LOI, MSA, purchase agreements, BAA, and employment contracts, work best when negotiated in a clear sequence that protects clinical control and financial outcomes.<\/li>\n<li>Post-close compliance steps such as Dental Board notifications, NPI updates, Medi-Cal re-enrollment, and payer re-credentialing can be essential to avoid billing gaps and earnout disputes.<\/li>\n<li>McLerran &amp; Associates runs a competitive, sell-side process that anticipates these California-specific requirements and guides owners through each stage.<\/li>\n<\/ul>\n<p><a href=\"https:\/\/dentaltransitions.com\/contact-us\/?utm_source=ai-growth-agent&amp;utm_term=california-dso-affiliation-process\" class=\"solid-button\" target=\"_blank\">Schedule a free, confidential discovery call with McLerran &amp; Associates.<\/a><\/p>\n<h2>The PC-MSO Structure In California: Who Owns What<\/h2>\n<p>A California DSO affiliation uses a split structure because non-dentists cannot own a dental practice directly. The Professional Corporation (PC) is the licensed dental entity, owned and controlled by a licensed dentist, and it retains all clinical authority. The Management Services Organization (MSO) is the business entity that provides administrative and other non-clinical services to the PC under a Management Services Agreement (MSA). California Business and Professions Code \u00a7\u00a71800\u20131808 requires that a dental corporation&#8217;s shareholders, officers, and directors be licensed dentists, and the Dental Board of California enforces those ownership rules through its licensing and fictitious-name permit requirements.<\/p>\n<p>The MSA is the contract that defines what the MSO can and cannot do. It must stay on the business side and avoid clinical control, a boundary that SB 351 now codifies with statutory force and Attorney General enforcement authority. For a fuller explanation of the PC-MSO structure, see McLerran&#8217;s <a href=\"https:\/\/dentaltransitions.com\/articles\/dso-affiliation-california-dentists\/?utm_source=ai-growth-agent&amp;utm_term=california-dso-affiliation-process\" target=\"_blank\">PC-MSO explainer<\/a>.<\/p>\n<h2>California DSO Affiliation Process: Step-By-Step<\/h2>\n<p>The six steps below outline a typical California DSO affiliation. Each step builds on the last. Rushing or skipping a step can increase risk later in the process.<\/p>\n<ol>\n<li><strong>Valuation And EBITDA Preparation:<\/strong> A CPA-led, diligence-grade EBITDA analysis and practice valuation comes first, before any buyer conversation. This work forms the foundation of the entire process. A \u201cfree\u201d or back-of-the-napkin valuation often becomes the buyer&#8217;s anchor, and it can be re-traded in diligence when the buyer&#8217;s quality-of-earnings team finds weaknesses. McLerran builds a comprehensive EBITDA analysis up front, unpacking every discretionary, personal, and non-recurring expense so the number can hold under scrutiny. For more on how valuation works in a DSO context, see <a href=\"https:\/\/dentaltransitions.com\/articles\/dental-practice-valuation-dso-california\/?utm_source=ai-growth-agent&amp;utm_term=california-dso-affiliation-process\" target=\"_blank\">California Dental Practice Valuation for a DSO Sale<\/a>.<\/li>\n<li><strong>Confidentiality And Initial Buyer Conversations:<\/strong> Before any practice information is shared, a Non-Disclosure Agreement (NDA) is executed with each prospective buyer. McLerran vets buyers before they reach the table, screens out poorly run or undercapitalized DSOs, and runs a structured, competitive process instead of exposing the owner to a single DSO. A single-buyer conversation removes competitive tension and usually reduces the final economics.<\/li>\n<li><strong>Letter Of Intent (LOI):<\/strong> The LOI is a non-binding term sheet that covers the core economic terms, including total valuation, cash at close, equity structure at the joint-venture or holding-company level, and earnout provisions. McLerran negotiates LOI terms on the owner&#8217;s behalf. The LOI sets the framework for everything that follows, so weak LOI terms are difficult to improve later. For guidance on comparing offers at this stage, see <a href=\"https:\/\/dentaltransitions.com\/articles\/compare-dso-offers-california-dental\/?utm_source=ai-growth-agent&amp;utm_term=california-dso-affiliation-process\" target=\"_blank\">How to Compare DSO Offers for Your California Practice<\/a>.<\/li>\n<li><strong>Definitive Agreements:<\/strong> After the LOI is signed, the parties negotiate the full document package. This package includes the MSA, the asset purchase agreement or equity purchase agreement, stock transfer and restriction agreements, a Business Associate Agreement (BAA) governing HIPAA-protected health information, employment or independent contractor agreements for the selling dentist, and ancillary agreements covering intellectual property, leases, and equipment. Each document appears in the checklist section below with more detail.<\/li>\n<li><strong>Diligence And Quality-Of-Earnings Defense:<\/strong> The buyer&#8217;s team conducts a formal quality-of-earnings (QofE) review, which is a detailed audit of the EBITDA that supported the LOI. This stage is where weak valuations often get re-traded. McLerran defends the underwritten EBITDA when the buyer&#8217;s QofE team challenges add-backs or adjustments and uses competitive tension, reminding buyers that other vetted bidders are waiting, to reduce re-trading pressure.<\/li>\n<li><strong>Closing And Post-Close Transitions:<\/strong> Closing starts a series of California-specific filings and notifications. These can include Dental Board of California ownership notifications and fictitious-name permit updates, California Secretary of State filings, NPI\/NPPES record updates, Medi-Cal\/DHCS enrollment changes, commercial payer re-credentialing, malpractice coverage transitions, lease assignments, and banking changes. The post-close steps appear in more detail below.<\/li>\n<\/ol>\n<p>McLerran&#8217;s DSO bid process typically runs about 45\u201360 days and often draws around 10 offers from vetted buyers. For a more detailed walkthrough of the full process, see <a href=\"https:\/\/dentaltransitions.com\/articles\/selling-dso-california-process-steps\/?utm_source=ai-growth-agent&amp;utm_term=california-dso-affiliation-process\" target=\"_blank\">How to Sell Your CA Dental Practice to a DSO: 11 Steps<\/a>.<\/p>\n<p><a href=\"https:\/\/dentaltransitions.com\/contact-us\/?utm_source=ai-growth-agent&amp;utm_term=california-dso-affiliation-process\" class=\"solid-button\" target=\"_blank\">See how McLerran runs the California DSO affiliation process.<\/a><\/p>\n<h2>Document Checklist For A California DSO Affiliation<\/h2>\n<p>The documents below create the paper trail of a California DSO affiliation. Each one appears at a particular stage and addresses a specific risk for the selling dentist.<\/p>\n<ol>\n<li><strong>Non-Disclosure Agreement (NDA):<\/strong> Executed first, before any practice financial information is shared. The NDA protects the owner if a buyer reviews confidential data and does not close the deal.<\/li>\n<li><strong>Letter Of Intent (LOI):<\/strong> Executed after initial buyer conversations and before definitive agreements. The LOI establishes the economic framework, including valuation, cash at close, equity, and earnout, and typically includes an exclusivity period during which the owner cannot negotiate with other buyers. McLerran negotiates LOI terms to protect the owner&#8217;s interests before exclusivity begins.<\/li>\n<li><strong>Management Services Agreement (MSA):<\/strong> The central contract between the MSO and the PC, executed as part of the definitive agreement package. The MSA defines the scope of non-clinical services, the management fee structure, term, expense allocation, and the boundaries around clinical authority. Under SB 351, the MSA must not grant the MSO control over clinical decisions. Management fees must be structured at fair market value. Percentage-of-revenue fees are not categorically banned, but they are scrutinized under California Business and Professions Code \u00a7650 and typically avoided where alternatives exist.<\/li>\n<li><strong>Asset Purchase Agreement Or Equity Purchase Agreement:<\/strong> Executed at closing. This agreement governs the transfer of non-clinical assets such as equipment, leases, goodwill, and administrative systems to the MSO, or the transfer of equity in the practice entity. The choice between an asset deal and an equity deal has significant tax implications and is negotiated based on the owner&#8217;s goals.<\/li>\n<li><strong>Stock Transfer And Restriction Agreement:<\/strong> This agreement governs the conditions under which PC ownership can be transferred. <a href=\"https:\/\/practiceguides.chambers.com\/practice-guides\/healthcare-ma-2026\/usa-california\/trends-and-developments\/O25870\" target=\"_blank\" rel=\"noindex nofollow\">The California Attorney General has identified MSO-PC arrangements where the MSO can unilaterally trigger a transfer of PC equity to a physician of its choosing as raising significant CPOM compliance concerns.<\/a> Careful drafting helps avoid giving the MSO impermissible control over the PC.<\/li>\n<li><strong>Business Associate Agreement (BAA):<\/strong> Required under HIPAA whenever the DSO handles protected health information on behalf of the dental practice. The BAA authorizes specified functions such as billing, analytics, and information systems and imposes safeguards, breach obligations, and return or destruction requirements. It does not transfer ownership of clinical records to the MSO.<\/li>\n<li><strong>Employment Or Independent Contractor Agreement:<\/strong> This agreement governs the selling dentist&#8217;s post-close clinical role, compensation, schedule, and transition period. Many owners under-negotiate this document. A high purchase price paired with a below-market employment agreement can significantly reduce the owner&#8217;s total economic outcome over the transition period.<\/li>\n<li><strong>Ancillary Agreements (IP, Lease, Equipment):<\/strong> These agreements cover the transfer or assignment of intellectual property, lease assignments or new lease arrangements, and equipment ownership. They are executed as part of the closing package and address the non-clinical assets that move to the MSO.<\/li>\n<\/ol>\n<p>McLerran manages this document sequence and coordinates with the owner&#8217;s attorney and CPA throughout the process. The firm serves as advisor and advocate, while ensuring the right legal and tax specialists are engaged at each stage.<\/p>\n<h2>SB 351 And Clinical Control: How The MSA Protects Autonomy<\/h2>\n<p>SB 351 reshaped how private equity and hedge funds can participate in California dental practices, so every new MSA now sits inside that framework. California SB 351 was signed into law on October 6, 2025, and took effect on January 1, 2026, codifying the state&#8217;s Corporate Practice of Medicine and Dentistry doctrine specifically for private equity and hedge fund involvement in physician and dental practices.<\/p>\n<p><a href=\"https:\/\/practiceguides.chambers.com\/practice-guides\/healthcare-ma-2026\/usa-california\/trends-and-developments\/O25870\" target=\"_blank\" rel=\"noindex nofollow\">Under SB 351, private equity groups and hedge funds are prohibited from interfering with the professional judgment of dentists by determining what diagnostic tests are appropriate, determining the need for referrals or consultations, being responsible for the ultimate overall care of the patient, or determining how many patients a dentist shall see in a given period or how many hours they shall work.<\/a><\/p>\n<p>SB 351 also prohibits PE-backed or hedge-fund-backed MSOs from controlling or being delegated authority over ownership or content of patient medical records, hiring and firing of clinicians based on clinical competency, and contracting with payers in a way that drives clinical decisions. Non-compete and non-disparagement clauses in MSAs involving PE-backed or hedge-fund-backed entities are void under SB 351, with a narrow exception for sale-of-business non-competes in genuine practice acquisitions where the seller received consideration for goodwill.<\/p>\n<p>SB 351 applies to all agreements in effect as of January 1, 2026, regardless of when they were signed, so preexisting MSA arrangements were not grandfathered and required amendment or restatement if they contained prohibited provisions. <a href=\"https:\/\/jdsupra.com\/legalnews\/california-attorney-general-s-amicus-1626198\" target=\"_blank\" rel=\"noindex nofollow\">The California Attorney General has express enforcement authority, including the ability to seek injunctive relief and recover attorney&#8217;s fees.<\/a> <a href=\"https:\/\/practiceguides.chambers.com\/practice-guides\/healthcare-ma-2026\/usa-california\/trends-and-developments\/O25870\" target=\"_blank\" rel=\"noindex nofollow\">On May 7, 2026, the California Attorney General announced a settlement with a private equity-backed national dental management company with 19 California locations for violating California&#8217;s ban on the corporate practice of dentistry, resulting in $2 million in penalties and $300,000 in restitution to patients.<\/a><\/p>\n<p>The practical implication for a California DSO affiliation is straightforward. The MSA must preserve clinical autonomy for the PC and its licensed dentists. The PC holds clinical authority, and the MSO provides administrative services. McLerran structures and negotiates DSO deals with these California constraints in mind and encourages owners to have qualified healthcare counsel review the MSA against SB 351 before signing.<\/p>\n<h2>AB 1415 And The OHCA 90-Day Advance Notice<\/h2>\n<p>AB 1415 affects when certain California DSO deals can close because it adds a pre-transaction notice step for some private equity and MSO structures. California AB 1415 was signed into law on October 11, 2025, and became effective January 1, 2026, expanding the Office of Health Care Affordability&#8217;s (OHCA) pre-transaction notice framework to cover private equity groups, hedge funds, MSOs, newly created entities formed to transact with a health care entity, and entities that own, operate, or control a health care provider.<\/p>\n<p>AB 1415 requires these \u201cnoticing entities\u201d to file written notice with OHCA at least 90 days before closing any covered transaction if certain statutory thresholds are met. Under OHCA&#8217;s revised emergency regulations effective in early October 2026, a private equity or hedge fund transaction triggers a notice obligation if the fund holds 10% or more of the assets, equity, debt, or liabilities of a qualifying health care entity or MSO or if the transaction grants any of eight enumerated governance rights, such as the right to appoint or replace leadership, veto decisions, or manage or operate the entity through a management services agreement, regardless of ownership stake.<\/p>\n<p>Under OHCA&#8217;s revised regulations, after a complete notice is filed, OHCA has 45 days to clear the deal or 60 days to open a Cost and Market Impact Review (CMIR). A CMIR runs 90 days, extendable by 30, and each period is subject to tolling, which means the total review process can extend well beyond 90 days if OHCA requests additional information.<\/p>\n<p>California Health &amp; Safety Code \u00a7 127500.2(t) and (r) exclude dental practices from the definition of \u201cprovider\u201d for purposes of the MSO filing thresholds, which affects how the OHCA filing rules apply to dental-specific structures. However, the PE and hedge fund noticing entity obligations can still apply based on the counterparty&#8217;s qualification, and the rules continue to evolve. Parties can benefit from evaluating applicability with qualified healthcare counsel for each transaction.<\/p>\n<p>The practical impact on deal sequencing can be significant. A California DSO closing that triggers the OHCA notice requirement cannot close until the 90-day notice period has run, and the clock does not start until every required party has filed a complete notice. McLerran builds this notice requirement into the deal timeline so California closings are less likely to be delayed by an unplanned filing.<\/p>\n<h2>Licensing, NPI, And Payer Enrollment After Affiliating<\/h2>\n<p>Post-close transitions form a separate workstream that can affect both revenue and patient experience. Many California owners underestimate this stage, yet careful planning here can prevent billing interruptions and disputes over earnouts.<\/p>\n<p>The key post-close steps in a California DSO affiliation include the following:<\/p>\n<ol>\n<li><strong>Dental Board Of California Notifications And Fictitious-Name Permit Updates:<\/strong> The Dental Board of California requires that a Fictitious Name Permit (FNP) be tied to a licensed dentist who holds an active dental license, and the permit cannot be issued to or controlled by a non-dentist DSO entity. After a DSO affiliation, the FNP must be updated to reflect the correct licensed dentist-owner. The <a href=\"https:\/\/cda.org\/newsroom\/dental-benefits\/analysts-answer-top-questions-they-heard-from-dentists-at-cda-presents\" target=\"_blank\" rel=\"noindex nofollow\">California Dental Association advises dentists to obtain the Dental Board&#8217;s fictitious name permit before filing a DBA with the county<\/a>, because the board may reject a county-filed DBA that does not comply with its naming rules.<\/li>\n<li><strong>California Secretary Of State Filings:<\/strong> Changes to the PC&#8217;s ownership or structure may require updated filings with the California Secretary of State, including amended articles of incorporation or updated statements of information.<\/li>\n<li><strong>NPI\/NPPES Record Updates:<\/strong> CMS requires covered health care providers to report changes to NPPES within 30 days. After a DSO affiliation, both the individual dentist&#8217;s Type 1 NPI and the organization&#8217;s Type 2 NPI may require updates to reflect new practice addresses, authorized officials, or organizational names. The recommended update sequence is NPPES first, then PECOS, then CAQH, then individual payer notifications. Updating out of order can create mismatches that persist for months.<\/li>\n<li><strong>Medi-Cal\/DHCS Enrollment:<\/strong> The DHCS Provider Enrollment Division manages enrollment and re-enrollment of fee-for-service health care providers into the Medi-Cal program. A change of ownership or affiliation structure typically requires a new enrollment application or a change request through the PAVE Provider Portal. Physician enrollment applications are typically reviewed within 90 days, while applications from all other license types are typically reviewed within 180 days. Practices can benefit from starting this process before closing to reduce billing gaps.<\/li>\n<li><strong>Commercial Payer Re-Credentialing:<\/strong> Each commercial payer must be updated separately, because NPPES changes do not automatically cascade to payer credentialing files. A credentialing gap, which is the period when a dentist is treating patients but has not yet become effective under the relevant payer participation arrangement, can result in denied claims or out-of-network payment. Each payer has its own credentialing, directory, and roster process.<\/li>\n<li><strong>Malpractice Coverage:<\/strong> The selling dentist&#8217;s malpractice policy must be reviewed and updated to reflect the new practice structure. Tail coverage for pre-close claims often becomes a negotiating point in the definitive agreements.<\/li>\n<li><strong>Lease Assignments And Banking:<\/strong> Practice leases must be assigned or renegotiated to reflect the new ownership structure. Banking relationships, including lockbox arrangements and sweep mechanics under the MSA, should be established before the first post-close billing cycle.<\/li>\n<\/ol>\n<p>DHCS advises that Medi-Cal enrollment data reflects the most recent available figures but is inherently delayed, so a California dental practice that relies on Medi-Cal revenue can benefit from beginning Medi-Cal enrollment change work before a DSO closing.<\/p>\n<p><a href=\"https:\/\/dentaltransitions.com\/contact-us\/?utm_source=ai-growth-agent&amp;utm_term=california-dso-affiliation-process\" class=\"solid-button\" target=\"_blank\">Talk to McLerran about your California DSO affiliation timeline.<\/a><\/p>\n<h2>Equity Decisions And How Specialty Affects The Buyer Pool<\/h2>\n<p>The choice between selling entirely for cash at close and rolling over equity can be one of the most consequential decisions in a California DSO affiliation. As much as 40% of a DSO deal can be paid in equity rather than cash. Where that equity sits, at the joint-venture level or the holding-company level, can change the economics meaningfully.<\/p>\n<p>Joint-venture-level equity typically provides distributions and a higher floor, with a more modest upside. Holding-company equity usually provides no distributions but can multiply several times over in a successful recapitalization. The right structure depends on the owner&#8217;s financial goals, risk tolerance, and confidence in the DSO&#8217;s trajectory. McLerran prepares multi-year, multi-structure financial forecasts that model real after-tax proceeds across 3-, 5-, 7-, and 10-year horizons, using conservative recapitalization assumptions, so the owner can compare selling entirely versus rolling over equity with clearer information. For a side-by-side comparison of DSO and private-sale paths, see <a href=\"https:\/\/dentaltransitions.com\/articles\/dso-vs-private-sale-california\/?utm_source=ai-growth-agent&amp;utm_term=california-dso-affiliation-process\" target=\"_blank\">DSO vs. Private Sale Dental Practice California: 2026 Guide<\/a>.<\/p>\n<p>Specialty also shapes the equity decision because it influences who is likely to bid and how aggressively. Certain specialties attract a narrower but highly competitive buyer pool and can be among the fastest-consolidating segments. General dentistry draws a broad pool of buyers that has kept valuations near all-time highs. These differences can affect valuation, the number of competitive offers a practice receives, the equity mix a buyer is willing to propose, and the overall timeline.<\/p>\n<p>McLerran works both the private-buyer and DSO paths in roughly equal measure. That experience allows the firm to run a genuine side-by-side valuation for California owners in the $1.5M\u2013$3M range, quantifying what the practice may be worth in both markets before the owner commits to either path.<\/p>\n<h2>Where California DSO Deals Get Re-Traded Or Delayed<\/h2>\n<p>California DSO deals tend to fail or get re-traded at a few predictable points. Knowing these patterns in advance can help owners and their advisors design a smoother process.<\/p>\n<p>The most common failure points include the following:<\/p>\n<ol>\n<li><strong>Weak Or \u201cFree\u201d Valuations:<\/strong> A back-of-the-napkin EBITDA analysis rarely survives a buyer&#8217;s quality-of-earnings review. When the buyer&#8217;s QofE team finds weaknesses in the add-backs or adjustments, the deal often gets re-traded. McLerran&#8217;s CPA-led, diligence-grade valuation is built to hold up under scrutiny so the agreed value is more likely to remain intact during diligence.<\/li>\n<li><strong>MSA Terms That Conflict With SB 351:<\/strong> An MSA that grants the MSO control over clinical personnel, ties management fees to revenue in a way that compromises clinical decisions, or includes non-compete or non-disparagement clauses prohibited by SB 351 can create legal exposure that delays or ends a deal. McLerran structures and negotiates DSO deals with these California constraints in mind and coordinates with the owner&#8217;s healthcare counsel on MSA review.<\/li>\n<li><strong>Missed OHCA 90-Day Notice:<\/strong> A qualifying transaction that closes without the required OHCA notice can create regulatory exposure and may require unwinding. McLerran incorporates the OHCA notice requirement into the deal timeline from the LOI stage so it is less likely to appear as a closing-day surprise.<\/li>\n<li><strong>Incomplete Dental Board Or Payer Enrollment Transitions:<\/strong> Fictitious-name permit updates, NPI changes, and Medi-Cal re-enrollment that do not start before closing can create billing gaps that affect the practice&#8217;s post-close EBITDA and can trigger earnout disputes. McLerran coordinates the post-close transition checklist with the owner&#8217;s team to reduce these gaps.<\/li>\n<li><strong>Limited Competitive Tension:<\/strong> An owner who negotiates with a single DSO has little leverage, and the buyer usually controls the terms. The competitive bid process described earlier, the one that typically draws around 10 offers, is what creates that leverage and supports stronger price and terms.<\/li>\n<\/ol>\n<p>McLerran&#8217;s transaction rate runs roughly 85\u201390%, compared to an industry norm closer to 35\u201340% and a do-it-yourself close rate of roughly 15\u201320%. That difference reflects a process that anticipates and manages these failure points rather than encountering them for the first time at the closing table.<\/p>\n<p><a href=\"https:\/\/dentaltransitions.com\/contact-us\/?utm_source=ai-growth-agent&amp;utm_term=california-dso-affiliation-process\" class=\"solid-button\" target=\"_blank\">Discuss your California DSO affiliation strategy with McLerran.<\/a><\/p>\n<h2>FAQ: California DSO Affiliation Questions<\/h2>\n<h3>What Is The PC-MSO Structure In California?<\/h3>\n<p>The PC-MSO structure is the legally compliant framework for DSO affiliation in California. The Professional Corporation (PC) is owned and controlled by a licensed dentist and retains all clinical authority. The Management Services Organization (MSO) is a separate business entity that provides non-clinical administrative services to the PC under a Management Services Agreement (MSA). California&#8217;s Corporate Practice of Dentistry doctrine prohibits non-dentists from owning or controlling a dental practice directly, which is why this split structure exists. In practice, the PC retains the dental license, employs clinical staff, and owns patient records, while the MSO holds non-clinical assets such as equipment, leases, and goodwill.<\/p>\n<h3>What Documents Are Required For A California DSO Affiliation?<\/h3>\n<p>A California DSO affiliation typically uses a sequence of core documents. These include an NDA before any financial information is shared, an LOI that sets the economic terms, an MSA that defines non-clinical services and clinical authority boundaries, an asset purchase agreement or equity purchase agreement that governs the transfer of non-clinical assets or equity, a stock transfer and restriction agreement that governs PC ownership transitions, a BAA that covers HIPAA-protected health information, an employment or independent contractor agreement for the selling dentist&#8217;s post-close clinical role, and ancillary agreements for intellectual property, leases, and equipment.<\/p>\n<h3>How Does SB 351 Affect DSO Affiliation In California?<\/h3>\n<p>SB 351, effective January 1, 2026, sets specific limits on what a private equity- or hedge fund-backed MSO can do in a California dental practice. The MSA must avoid granting the MSO control over clinical decisions, including diagnostic tests, treatment plans, referrals, patient volume, hours worked, hiring and firing of clinicians based on clinical competency, or payer contracting parameters that drive clinical choices. Non-compete and non-disparagement clauses in MSAs involving PE-backed or hedge-fund-backed entities are void under SB 351, with a narrow exception for certain sale-of-business non-competes. The law applies to all agreements in effect as of January 1, 2026, regardless of when they were signed, and the California Attorney General has express enforcement authority. Many owners choose to have qualified healthcare counsel review the MSA against SB 351 before signing.<\/p>\n<h3>Does A California DSO Deal Require An OHCA Notice Under AB 1415?<\/h3>\n<p>AB 1415 can require an OHCA notice when a transaction involves private equity or hedge funds that meet specific thresholds. Under OHCA&#8217;s revised emergency regulations effective in early October 2026, a transaction triggers a notice obligation if a private equity group or hedge fund acquires 10% or more of a qualifying entity&#8217;s assets, equity, debt, or liabilities, or if the transaction grants any of eight enumerated governance rights, such as the right to appoint leadership or manage the entity through an MSA. The notice must be filed at least 90 days before closing, and the period does not begin until every required party has filed a complete notice. Dental practices are excluded from the definition of \u201cprovider\u201d for certain MSO filing thresholds, yet the PE and hedge fund noticing entity obligations can still apply, so parties often review applicability with qualified healthcare counsel.<\/p>\n<h3>What Happens To My NPI And Payer Enrollment After Affiliating?<\/h3>\n<p>After a California DSO affiliation, both the individual dentist&#8217;s Type 1 NPI and the organization&#8217;s Type 2 NPI may need updates for new practice addresses, authorized officials, or organizational names. The recommended sequence is NPPES first, then PECOS, then CAQH, followed by individual payer notifications, because skipping steps or changing the order can create data mismatches. Each commercial payer requires its own update process, since NPPES changes do not automatically flow through to payer credentialing files. A credentialing gap, when a dentist is treating patients but is not yet effective under the payer participation arrangement, can result in denied claims or out-of-network payment, so planning this sequence can be helpful.<\/p>\n<section data-read-next=\"true\">\n<h2>Read Next<\/h2>\n<ul>\n<li><a href=\"https:\/\/dentaltransitions.com\/articles\/dso-affiliation-california-dentists\/\" target=\"_blank\">DSO Affiliation for California Dentists: How PC-MSO Works<\/a><\/li>\n<li><a href=\"https:\/\/dentaltransitions.com\/articles\/dso-partnership-terms-california-dentist\/\" target=\"_blank\">DSO Partnership Terms for California Dentists: A Guide<\/a><\/li>\n<li><a href=\"https:\/\/dentaltransitions.com\/articles\/choose-dso-partner-california\/\" target=\"_blank\">How to Choose a DSO Partner in California: A 7-Step Guide<\/a><\/li>\n<li><a href=\"https:\/\/dentaltransitions.com\/articles\/compare-dso-offers-california-dental\/\" target=\"_blank\">How to Compare DSO Offers for Your California Practice<\/a><\/li>\n<li><a href=\"https:\/\/dentaltransitions.com\/articles\/selling-dso-california-process-steps\/\" target=\"_blank\">How to Sell Your CA Dental Practice to a DSO: 11 Steps<\/a><\/li>\n<\/ul>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Navigate California&#8217;s DSO affiliation step by step. McLerran &#038; Associates guides dentists through PC-MSO structures, SB 351, and AB 1415.<\/p>\n","protected":false},"author":1,"featured_media":792,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-793","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/dentaltransitions.com\/articles\/wp-json\/wp\/v2\/posts\/793","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dentaltransitions.com\/articles\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dentaltransitions.com\/articles\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/dentaltransitions.com\/articles\/wp-json\/wp\/v2\/comments?post=793"}],"version-history":[{"count":0,"href":"https:\/\/dentaltransitions.com\/articles\/wp-json\/wp\/v2\/posts\/793\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dentaltransitions.com\/articles\/wp-json\/wp\/v2\/media\/792"}],"wp:attachment":[{"href":"https:\/\/dentaltransitions.com\/articles\/wp-json\/wp\/v2\/media?parent=793"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dentaltransitions.com\/articles\/wp-json\/wp\/v2\/categories?post=793"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dentaltransitions.com\/articles\/wp-json\/wp\/v2\/tags?post=793"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}