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Newsom signs SB 351, strengthening CA's corporate practice of medicine doctrine

By National Law Review  
   October 10, 2025

On October 6, 2025, California Governor Gavin Newsom signed SB 351, aimed at limiting the involvement of private equity groups and hedge funds in health care practices. While the new law does create new statutory requirements governing hedge fund and private equity group involvement in the management of physician and dental practices, those requirements largely reflect existing California case law and Medical Board of California guidance. Specifically, the new law: prohibits a private equity group or hedge fund that is involved—including as an investor or owner—with a physician or dental practice doing business in the state, from interfering with the professional judgment of physicians and dentists in making health care decisions; prohibits these entities from exercising power over specified actions, including hiring practices and coding and billing procedures for patient services; and prohibits contracts between a private equity group or hedge fund or an entity controlled by a private equity group or a hedge fund and a physician or dental practice, if the contract would allow the conduct described above or impose a noncompete or nondisparagement clause. The law will take effect on January 1, 2026. The state attorney general is empowered to enforce the new law through injunctive relief and other equitable remedies. It is the latest in a national trend among states to strengthen corporate practice of medicine doctrines by limiting the influence of non-licensed entities in clinical decision-making. The bill, introduced by California State Senator Christopher Cabaldon, passed the state legislature in September with bipartisan support.

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