Ownership rules

Physician-owned or MSO-managed with physician control; non-physician ownership prohibited

Corporate Practice of Medicine

Strict; Corporate Practice of Medicine doctrine enforced—non-physicians cannot own/control medical decisions; MSO structure required

The medical-director angle

Required; physician must be on-site or immediately available for injectable procedures Ownership and the medical-director requirement are usually two sides of the same compliance coin.

What to verify in California

Verify physician ownership or establish compliant MSO with physician control; confirm on-site supervising physician availability for all injection days.

Primary source: California Medical Board; California Board of Registered Nursing

General business information for California medical-spa owners, current as of 2026 — not legal advice. State boards update rules often; confirm specifics with the California board (and your own counsel) before you act.

See the full California regulation profile →