Top 25 California physician groups by Medicare charges

San Ramon-based Hill Physicians Medical Group in Northern California topped Definitive Healthcare's list of California physician groups with the highest Medicare charges. 

Here are the groups, ranked by their total number of Medicare charges. 

1. Hill Physicians Medical Group — $1.87 billion
2. UCLA Health System Physicians (Manhattan Beach) — $1.41 billion
3. Vituity (Emeryville) — $1.26 billion
4. Brown & Toland Physicians (Oakland) — $1.1 billion
5. GenesisCare (Anaheim)  — $942.83 million
6. Sutter Pacific Medical Foundation (San Francisco) — $825.73 million
7. Sharp Community Medical Group — (San Diego) $797.15 million
8. John Muir Health Physician Network (Walnut Creek) — $790.8 million
9. El Camino Health Physicians (Los Altos) — $735.96 million
10. Sante Community Physicians (Clovis) — $642.4 million
11. University of California San Francisco Health Physicians — $559.33 million
12. Seoul Medical Group (Los Angeles)  — $535.97 million
13. Scripps Clinic (San Diego) — $529.75 million
14. Stanford Hospitals and Clinics (Palo Alto) — $506.37 million
15. Sutter Medical Foundation (Sacramento) — $502.77 million
16. City of Hope (Duarte) — $486.23 million
17. Cedars-Sinai Physicians (Tarzana) — $475.68 million
18. Providence Medical Foundation (Hawthorne) — $428.39 million
19. The Permanente Medical Group (Pasadena) — $420.84 million
20. Cottage Health Physicians (Oxnard) — $412.26 million
21. MemorialCare Medical Group (Irvine) — $402.36 million
22. Scripps Physicians Medical Group (San Diego) — $397.89 million
23. United Physicians International (Panorama City) — $388.51 million
24. UC San Diego Health Physicians — $384.44 million
25. Regal Medical Group (Northridge)  — $360.87 million