An MSO can manage administration. It cannot manage medicine.

A management services organization (MSO) can solve real operational problems: payroll, scheduling, technology, facilities, purchasing, billing support, and administrative staff. It cannot solve them by becoming the medical practice in substance while the physician merely holds the title.

California Business and Professions Code section 2400 is the statutory starting point. The Medical Board's corporate-practice guidance identifies decisions that must remain with a California-licensed physician. The agreement, software permissions, budget process, and daily operations must preserve that boundary.

The practical test is simple: when clinical judgment conflicts with revenue, staffing, throughput, a vendor, or a platform rule, can the California-licensed physician make and carry out the final clinical decision?

Keep clinical decisions with physicians

The Medical Board identifies decisions a California-licensed physician must make: appropriate diagnostic tests, referrals or consultation, treatment options, and the patient's overall care. It also identifies patient volume and physician work hours as clinical-control concerns. An MSO may supply information or administrative support, but it cannot control those professional decisions.

The Board also identifies management decisions that can control medical practice. For record-content control, clinically based hiring and firing, payer-contract parameters, coding and billing procedures for patient-care services, and selection of medical equipment and supplies, a California-licensed physician must retain ultimate responsibility for or approval of the decision. An MSO may advise or consult; it cannot receive delegated control.

Map each reserved decision in the agreement and operating system. Identify who recommends it, who approves it, where the approval is recorded, and who can change it. For records, identify the system custodian, physician authority over record content, permissions, export process, and patient-access duties. A termination plan should preserve uninterrupted clinical access and a safe transition route; it should not invent a new owner for the chart.

Administrative control can become clinical control. Examples include setting patient volume, rejecting clinically needed equipment, changing coding rules for patient-care services, or restricting clinical record access. The agreement cannot convert a professional decision into an administrative one by changing its label.

Define administrative services

List each administrative service and performance standard in the agreement. State each fee, data or system right, and end condition. Identify who employs each worker and owns each asset. Indemnity is a contract duty to pay or protect another party against a specified loss. The agreement should address privacy, security, insurance, and indemnity without treating any of them as a transfer of clinical authority.

The fee formula can create control concerns when it gives the MSO authority over patient volume, payer terms, coding or billing procedures, or clinical equipment. State the formula, timing, included services, vendor costs, audit rights, and change process. A fee is not automatically improper because it is complex, but it should not operate as a hidden clinical-control right.

The agreement should preserve practice access to essential records and systems. It should cover data export, credential transfer, staff access, telephone numbers, domains, vendor accounts, patient communication, pending clinical work, and escalation after the agreement ends. Test the plan with a departing physician, an unresolved result, and a platform outage before relying on it.

In a structure sometimes called a "friendly professional corporation," a licensed physician may hold the professional-practice shares while an MSO provides management and financing. Share ownership alone does not satisfy California's control requirements. Review finance rights, succession terms, data rights, staffing powers, software permissions, and daily approval paths for actual control. The California-licensed physician must retain the authority the Board reserves for the professional practice.

Understand the 2026 private investment rule

California Senate Bill 351 added Health and Safety Code sections 1190 through 1192. It applies to defined private-equity groups and hedge funds involved with physician or dental practices. It prohibits those covered investors from interfering with professional judgment and from controlling listed professional and operational decisions.

The statute makes a prohibited provision void and unenforceable. Listed matters include records, clinical hiring, payer contracts, coding and billing procedures, and medical equipment. Confirm whether the statutory definitions and exclusions cover the investor before applying this defined rule. Then identify every decision that the agreement gives that investor.

The statute applies only to specified investor groups. Every MSO structure must still comply with California's corporate practice rules.

Match insurance to both entities

The professional practice and MSO have different activities. The practice can face professional and business claims. The MSO can face employment, technology, premises, privacy, contract, and other business claims. A single event can name both entities, but that does not establish insurance coverage for either.

List which entity employs each person, owns each system, signs each contract, and controls each location. Compare that list with every policy's named-insured schedule, insured definitions, professional-services terms, exclusions, and endorsements. Provide accurate information the insurer requests about the management relationship; do not assume a broker request or application changes coverage.

Do not assume shared owners or an address provide coverage for both entities. A named insured is a person or entity listed for coverage. An additional insured receives only stated coverage under another party's policy. An endorsement changes a policy. California law says a certificate is not a policy and does not amend, extend, or alter coverage. Review each issued policy and endorsement.

Confirm control and coverage before signing

Answer these questions before signing.

Which services are administrative?
Which decisions remain with licensed physicians?
Who has authority over record content, clinical access, export, and patient-access duties?
Who employs each clinical and administrative worker?
How is the fee calculated?
Which entity owns each system and location?
What happens when the agreement ends?
Which issued policies may be intended to address each entity and activity, and what terms must be checked?

Update the review after any ownership, service, fee, staffing, location, investor, or system change.

The agreement must match daily operations. Each policy review must test the work each entity actually performs against the issued terms. An MSO can support the practice, but it cannot own the physician's clinical judgment.