California’s physician assistant (“PA”) practice landscape is set to undergo significant transformation following the enactment of California Assembly Bill 1501 (AB 1501), which was signed into law by Governor Newsom on October 1, 2025, and will take effect on January 1, 2026. Among its key provisions, AB 1501 extends the authority of the California Department of Consumer Affairs’ Physician Assistant Board (the “Board”) through January 1, 2030, increases the physician-to-PA supervision ratio from 1:4 to 1:8 in all settings, and directs the Board to study scope-of-practice structures—with input from stakeholders—to evaluate potential models from other states that could benefit California. These modernization efforts are designed to enhance healthcare access and better align PA practice with current workforce demands. This article summarizes the key reforms implemented by AB 1501 and offers guidance on how PAs and their practices can prepare for these new requirements.Continue Reading AB 1501 Becomes Law: How It Will Reshape California PA Practice





