Who bills the most New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204) to Medicare in California?

2,618 physician groups billed New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204) to Medicare fee-for-service in California in 2024; the top five named groups hold 18% of that volume, and independent (non-hospital-affiliated) groups deliver 4%.

99204 — New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more · Source: CMS Medicare Physician & Other Practitioners PUF (Part B), CY2024 release. Medicare fee-for-service only.

Snapshot covers the whole California market — the table below shows the top 100 groups (free tier).

*Share of California's disclosed Medicare-FFS services for 99204, counted once per clinician. Volume is placed in the state it was billed from, so this page ranks the groups actually billing 99204 in California — including groups registered elsewhere ("City" is each group's registered location). Group figures sum clinicians affiliated with exactly one group; clinicians in several groups are listed in each group's drill-down but not volume-attributed to any single group.