CA AB1415

Expands the Office of Health Care Affordability's oversight to include management services organizations (MSOs), requiring them to submit data and report agreements or transactions involving health care entities

Defines "hedge fund" and "private equity group" for regulatory purposes, establishing which investment entities are subject to reporting requirements when entering transactions with health care entities

Requires "noticing entities" (private equity groups, hedge funds, MSOs, and entities controlling providers) to provide 90-day written notice to the office before entering agreements that transfer material assets or control of health care entities

Updates the definition of "provider" to include physician organizations, health facilities, clinics, ambulatory surgical centers, clinical laboratories, and imaging facilities

Adds MSOs to the office's ongoing research and evaluation responsibilities to determine their impact on health care cost, quality, equity, and workforce stability