Physician Practice Attorney California — Legal Structuring for Medical Corporations and Group Practices
California physicians building or restructuring a practice need a physician practice attorney in California who understands the full scope of regulatory, corporate, and operational requirements that apply to medical business entities in this state. Whether you are a solo practitioner forming your first professional medical corporation, a group of physicians designing a multi-provider governance framework, or an established practice expanding into concierge or direct primary care medicine, the legal architecture underlying your practice determines its compliance posture, financial efficiency, and long-term viability.
Bay Legal PC provides strategic legal counsel to California physicians at every stage of practice development. We handle professional medical corporation formation under the Moscone-Knox Professional Corporation Act (Corporations Code Section 13400 et seq.), shareholder and buy-sell agreements, compensation structuring, MSO separation, governance design, partner dispute resolution, and multi-location expansion planning. Our approach is structural — we design the legal framework that supports how you want to practice, compensate your physicians, bring in new partners, and eventually transition ownership.
California's physician practice environment carries regulatory requirements that do not exist in most other states. The Corporate Practice of Medicine doctrine, codified through Business & Professions Code Sections 2052 and 2400, restricts who can own and operate a medical practice. Fee-splitting prohibitions under BPC Section 650 govern how revenue flows between entities. SB 351, effective January 1, 2026, imposes new restrictions on private equity involvement and voids certain non-compete provisions in physician practice contracts. Bay Legal designs physician practice structures that satisfy these requirements while supporting the business objectives of the physicians who own and operate them.
Professional Medical Corporation Formation in California
A physician who wishes to practice medicine in corporate form in California must form a professional medical corporation. Under the Moscone-Knox Professional Corporation Act (Corporations Code Sections 13400–13410) and Business & Professions Code Sections 2400–2417, a medical corporation is the exclusive corporate vehicle for delivering physician services. An LLC, general corporation, or limited partnership cannot own or operate a medical practice in California. The articles of incorporation must contain specific language declaring the entity a professional corporation under the Act and identifying the professional services to be rendered.
Each shareholder, director, and officer of a professional medical corporation — except an assistant secretary and assistant treasurer — must be a licensed person as defined in Corporations Code Section 13401. For medical corporations, this means the controlling shareholders must hold valid California medical licenses. Certain other licensed professionals (podiatrists, psychologists, registered nurses, optometrists, and physician assistants) may hold minority shares, provided the sum of all shares owned by non-physician licensed persons does not exceed 49 percent of total shares and the number of such minority shareholders does not exceed the number of physician shareholders. These ownership restrictions are not optional — they are structural requirements that must be reflected in the corporation's articles, bylaws, shareholder agreements, and stock transfer restrictions.
Bay Legal handles professional medical corporation formation from initial planning through filing and post-formation governance setup. We draft the articles of incorporation, bylaws, organizational resolutions, shareholder agreements, and stock restriction legends. We also advise on tax election decisions — particularly the S-corporation election — and coordinate with the physician's tax advisors to ensure the entity structure supports both regulatory compliance and tax efficiency. For physicians transitioning from a sole proprietorship or an improperly formed entity, we manage the restructuring process to bring the practice into compliance with California law.
Shareholder Agreements and Buy-Sell Structures for Physician Groups
A physician group practice is only as stable as its governing agreements. When two or more physicians share ownership of a professional medical corporation, a comprehensive shareholder agreement — including buy-sell provisions — is essential. This agreement governs how shares are valued and transferred upon triggering events such as death, disability, retirement, voluntary withdrawal, involuntary termination, license revocation, or bankruptcy. Without a well-drafted buy-sell agreement, the departure of a single physician can destabilize the entire practice.
The valuation methodology is the most consequential provision in any physician buy-sell agreement. Common approaches include formula-based valuations (typically a multiple of revenue, earnings, or collections), independent appraisal at the time of the triggering event, or a fixed price that is periodically updated by agreement of the shareholders. Each approach carries trade-offs in terms of predictability, accuracy, cost, and potential for dispute. The agreement must also address funding mechanisms — whether the corporation or remaining shareholders will use practice cash flow, installment payments, life insurance proceeds, or disability insurance to fund the buyout. California law does not mandate a particular approach, but the agreement must be consistent with the Moscone-Knox Act's requirement that all shareholders be licensed persons, which means shares cannot be transferred to unlicensed individuals or entities.
Bay Legal drafts shareholder agreements and buy-sell provisions for physician group practices of all sizes. We tailor the valuation methodology, triggering events, payment terms, and dispute resolution procedures to the specific dynamics of each practice — because a two-physician dermatology practice requires a fundamentally different agreement than a twelve-physician multi-specialty group. We also build in provisions addressing non-competition (within the boundaries of SB 351 and California Business & Professions Code Section 16600), patient record transition, insurance tail coverage, and the practical logistics of physician separation.
Physician Compensation Structuring and Practice Governance
How physicians are compensated within a group practice directly affects recruitment, retention, productivity, and partnership stability. California physician groups typically use one of three compensation models — equal share, productivity-based, or hybrid — and the choice has significant implications for governance, tax planning, and regulatory compliance. An equal-share model distributes net income evenly among all physician-shareholders, promoting simplicity and collegiality but potentially creating tension when productivity levels diverge. A productivity-based model ties compensation to individual collections, relative value units (RVUs), or other measurable output, rewarding higher-producing physicians but introducing complexity in overhead allocation and potentially encouraging volume over quality. A hybrid model blends base compensation with productivity incentives, and may include additional components for administrative duties, call coverage, or quality metrics.
Compensation structures must be documented in either the shareholder agreement, an employment agreement, or a separate compensation plan that is incorporated by reference into the governing documents. The structure must also comply with federal requirements if the practice participates in Medicare or Medicaid — specifically, physician compensation cannot be determined in a manner that takes into account the volume or value of referrals, consistent with the Stark Law's in-office ancillary services exception and the Anti-Kickback Statute's personal services safe harbor. For practices with MSO arrangements, the compensation flowing between the MSO and the professional corporation must be at fair market value and documented accordingly.
Governance design is equally critical. The bylaws and shareholder agreement should define decision-making authority for key issues — adding new physician-shareholders, opening new locations, incurring debt, entering managed care contracts, terminating physicians, and setting compensation levels. Voting thresholds (simple majority, supermajority, or unanimity) should be calibrated to the significance of the decision and the number of shareholders. Bay Legal designs governance frameworks that balance efficient management with appropriate shareholder protections, preventing the deadlock and disputes that plague physician groups operating under generic corporate templates.
Concierge Medicine, Direct Primary Care, and Specialty Practice Structures
Concierge medicine and direct primary care (DPC) practices represent a growing segment of California physician practice, and they carry distinct structural considerations. A concierge practice typically charges patients a retainer or membership fee in exchange for enhanced access, longer appointments, and personalized care — often while still billing insurance for covered services. A DPC practice charges a periodic fee that covers a defined set of primary care services, generally without billing insurance. Both models require careful structuring to comply with California's Knox-Keene Health Care Service Plan Act (Health & Safety Code Section 1340 et seq.), which regulates entities that provide or arrange for healthcare services on a prepaid or capitated basis.
The critical legal question for concierge and DPC practices is whether the fee arrangement constitutes a "health care service plan" requiring Knox-Keene licensure. The California Department of Managed Health Care (DMHC) has authority to determine whether a particular arrangement falls within the statute. DPC practices that charge a flat monthly fee for a defined scope of services must be structured to fall within recognized exemptions or to satisfy regulatory safe harbors. Bay Legal advises physicians on how to structure membership agreements, define the scope of covered services, and implement compliant billing practices that avoid triggering Knox-Keene requirements.
Specialty practices — from ophthalmology and orthopedics to psychiatry and pain management — present their own structuring challenges. Ancillary services such as in-office imaging, laboratory testing, and ambulatory surgery create additional compliance requirements under Stark Law and California self-referral prohibitions. Multi-specialty groups must navigate the additional complexity of different scope-of-practice rules, varying credentialing requirements, and the interplay between physician and non-physician providers. Bay Legal designs specialty practice structures that account for these variables, ensuring that the entity formation, governance, compensation, and operational frameworks are tailored to the specific clinical and regulatory context of each specialty.
Steps / HowTo Section:
How Bay Legal Handles Physician Practice Structuring
1. Practice Assessment and Planning — We evaluate your current or proposed practice model, physician ownership composition, clinical services, compensation expectations, and growth objectives to develop a structuring strategy aligned with California regulatory requirements.
2. Entity Formation — We prepare and file the professional medical corporation formation documents, including Moscone-Knox compliant articles of incorporation, bylaws, organizational resolutions, and stock certificates with required transfer restriction legends.
3. Shareholder and Buy-Sell Agreement Drafting — We negotiate and draft the shareholder agreement governing ownership rights, transfer restrictions, valuation methodologies, triggering events, buyout terms, and dispute resolution procedures.
4. Compensation Plan Design — We design and document the physician compensation structure — equal share, productivity-based, or hybrid — with attention to tax efficiency, regulatory compliance, and alignment with practice culture and objectives.
5. Governance Framework — We establish the governance structure through bylaws and shareholder agreement provisions that define voting rights, decision-making thresholds, officer roles, and procedures for adding or removing physician-shareholders.
6. MSO Structuring (If Applicable) — For practices that require separation of administrative and clinical functions, we design and document the MSO entity, management services agreement, and fair market value compensation methodology.
7. Expansion and Succession Planning — We advise on adding locations, bringing in new physicians, adding specialties, and planning for ownership transitions — including retirement, practice sale, and generational succession.
Bay Legal PC represents physicians and physician groups in the business structuring, corporate governance, and transactional aspects of medical practice law in California. We handle professional medical corporation formation, shareholder agreements, buy-sell agreements, compensation structuring, governance design, MSO arrangements, and expansion planning. We do not handle medical malpractice defense, professional license defense before the Medical Board of California, Medicare or Medicaid billing disputes, or employment litigation. For matters outside our practice scope, we maintain referral relationships with qualified attorneys in those areas.
Q: Why can't a physician practice as an LLC in California?
A: California law requires physicians to practice in corporate form only through a professional medical corporation formed under the Moscone-Knox Professional Corporation Act (Corporations Code Section 13400 et seq.). Corporations Code Section 17701.04(e) explicitly prohibits LLCs from rendering professional services as defined in the Act. The Corporate Practice of Medicine doctrine, rooted in BPC Sections 2052 and 2400, further restricts the practice of medicine to licensed individuals and properly formed professional corporations. A physician operating through an LLC is operating an unlicensed medical practice, which exposes the physician to criminal liability, licensing board discipline, and potential loss of malpractice insurance coverage.
Q: What happens to a physician's shares if they lose their medical license?
A: Under the Moscone-Knox Professional Corporation Act, all shareholders of a professional medical corporation must be licensed persons. If a physician-shareholder's license is revoked, suspended, or otherwise rendered invalid, that physician becomes a "disqualified person" and can no longer hold shares. The corporation's bylaws and shareholder agreement should contain mandatory redemption provisions requiring the corporation to purchase the disqualified shareholder's shares within a specified timeframe. The income attributable to professional services rendered while the shareholder is disqualified cannot accrue to the benefit of that shareholder. Bay Legal builds these mandatory redemption provisions into every shareholder agreement we draft.
Q: How should a two-physician group handle governance and decision-making?
A: A two-physician group presents a unique governance challenge because equal ownership creates the potential for deadlock on every significant decision. The shareholder agreement should address this directly by establishing decision-making categories — operational decisions that either physician can make independently, significant decisions requiring mutual agreement, and fundamental decisions subject to a deadlock-breaking mechanism. Common deadlock-breaking provisions include mediation, arbitration, a buy-sell trigger (often called a "shotgun" or "Texas shootout" provision), or designation of a neutral third-party decision-maker for specific categories of disputes. Bay Legal designs two-physician governance structures that preserve the collegial relationship while providing clear resolution paths for disagreements.
Q: What are the tax implications of choosing between a C-corporation and S-corporation election for a medical corporation?
A: A professional medical corporation in California can elect S-corporation status with the IRS and the California Franchise Tax Board. An S-corp election allows income to pass through to the physician-shareholders, avoiding double taxation at the corporate level. However, California imposes a 1.5% franchise tax on S-corporation net income (minimum $800), and the pass-through treatment is subject to the built-in gains tax and passive income limitations. A C-corp pays tax at the corporate level and again when dividends are distributed to shareholders. The optimal election depends on the practice's income level, the physicians' personal tax situations, fringe benefit planning, and long-term ownership plans. Bay Legal coordinates with the physician's tax advisor to ensure the entity structure and tax election work together.
Q: How does SB 351 affect physician non-compete agreements?
A: SB 351, effective January 1, 2026, voids non-compete and non-disparagement provisions in contracts between private equity groups or hedge funds and physician practices, including management agreements and asset sale contracts. California already has one of the strongest prohibitions on employee non-compete agreements under Business & Professions Code Section 16600, and SB 351 extends these protections specifically to the physician practice context where private equity is involved. However, SB 351 does not invalidate sale-of-business non-compete agreements that are otherwise enforceable under California law, provided they do not function as employee non-competes. Physician groups should review existing agreements with MSOs or investor entities to ensure compliance with SB 351's requirements.
Internal Links
- Medical Business & Healthcare Law: https://baylegal.com/practice-areas/medical-business-healthcare-law/
- Professional Medical Corporations: https://baylegal.com/practice-areas/medical-business-healthcare-law/professional-medical-corporations/
- Healthcare Buy-Sell Agreements: https://baylegal.com/practice-areas/medical-business-healthcare-law/healthcare-buy-sell-agreements/
- Healthcare MSO & Management Structures: https://baylegal.com/practice-areas/medical-business-healthcare-law/healthcare-mso-management-structures/
- Buying or Selling a Medical Practice: https://baylegal.com/practice-areas/medical-business-healthcare-law/buying-selling-medical-practice/
External Links
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