NPPES file of Aug 9, 2026

Internal Medicine Physician in California

17,696 NPPES records list internal medicine physician with a practice address in California, 45 per 100,000 residents, the 17th highest rate of 51. Los Angeles and San Francisco have the most; each record links to the provider's NPI and the California license search. Page 352 of 354.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207R00000X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Los Angeles has the most, 1,423

  1. Los Angeles1,423
  2. San Francisco1,318
  3. San Diego961
  4. Sacramento601
  5. Oakland432

Internal Medicine Physician records in California

  1. Thanda Zaw, MDEast Los Angeles, CA 900221235491838
  2. Jana Zawadzki Longtine, MDLong Beach, CA 908061346654365
  3. Claudio Zawitkowski, M.D.,San Diego, CA 921161578558623
  4. Christian Zayek, MDTorrance, CA 905051407202674
  5. Diane Zebari, M.D.Mission Viejo, CA 926911336166081
  6. Dena Zedan, M.D.Huntington Beach, CA 926461144552894
  7. Howard Zeiger, M.D.Alamo, CA 945071669497897
  8. Roni Zeiger, MDSan Jose, CA 951281437316981
  9. Armen Zeitjian, MDTorrance, CA 905021255913356
  10. Barry Zeitlin, M.D.Roseville, CA 956611750363784
  11. Kreshnik Zejnullahu, MDSan Francisco, CA 941431326465444
  12. Yuliya Zektser, MDLos Angeles, CA 900951265995443
  13. Misty Zelk, M.D.Sebastopol, CA 954721962401463
  14. Wubanche Zellalem, D.OLoma Linda, CA 923541730323940
  15. Michael Zelman, M.D.Santa Monica, CA 904041790732964
  16. Natalie Zelta, M.D.Torrance, CA 905051689962664
  17. Markos Zemede, MDFresno, CA 937201033105598
  18. Lesley Zendle, MDRiverside, CA 925051558438572
  19. Lichuan Zeng, MDAlhambra, CA 918011376078667
  20. Zhi Zeng, MDSan Gabriel, CA 917761093801854
  21. Orlando Zepeda, MDSan Francisco, CA 941581821416355
  22. Arzhang Zereshki, M.D.Emeryville, CA 946081407096787
  23. Edwin Zevallos, M.D.Huntington Park, CA 902551518042498
  24. Barry Zevin, M.D.San Francisco, CA 941021508938887
  25. Telahun Zewdie, M.D.Whittier, CA 906021326079906
  26. Danielle ZezoffSacramento, CA 958171003444969
  27. Robert Zgliniec, MDRamona, CA 920651063488161
  28. Beth Zha, M.D., PH.D.San Francisco, CA 941431396087342
  29. Junli Zha, M.DIrvine, CA 926041275561276
  30. Anna Zhang, MDMountain View, CA 940411174159172
  31. Annie Zhang, M.D.Los Angeles, CA 900951790095966
  32. Billy Zhang, MDIrvine, CA 926021871087957
  33. Cindy Zhang, M.D.Loma Linda, CA 923541376963827
  34. Jessica Zhang, MDSanta Monica, CA 904041750918355
  35. Kemin Zhang, MDStockton, CA 952101245318153
  36. Lan Zhang, MDStockton, CA 952091871671610
  37. Laura ZhangOakland, CA 946091528357704
  38. Lifang Zhang, MDRoseville, CA 956611730468349
  39. Liyan Zhang, MDVacaville, CA 956881033297874
  40. Min Zhang, M.D.San Bernardino, CA 924041669634259
  41. Rui-Tao Zhang, M.D.Loma Linda, CA 923541669893384
  42. Shi ZhangLos Angeles, CA 900951902225345
  43. Shiliang ZhangSan Diego, CA 921031417584236
  44. Tong Zhang, M.D.San Diego, CA 921201942567508
  45. Viona Zhang, MDRiverside, CA 925011740642206
  46. Wenbiao Zhang, MDFresno, CA 937201073691986
  47. Wengang Zhang, M.D.Pittsburg, CA 945651063451243
  48. Xi ZhangSanta Clara, CA 950511992441299
  49. Xiao-Ling Zhang, M.DChino, CA 917101780619502
  50. Xin Zhang, MDRiverside, CA 925091528043551

Source: CMS NPPES, primary taxonomy 207R00000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 17 of 51 per resident

  1. New Jersey50
  2. New Hampshire48
  3. Minnesota46
  4. California45
  5. Florida45
  6. Ohio45
  7. 50 states and D.C.44

Source: CMS NPPES, primary taxonomy 207R00000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

79.5% of these records appear in a Medicare file, against 78.7% nationally

A Medicare file here is Part D prescribing (2024), a MIPS score (2023), an Open Payments record (2024) or Medicare group billing (CMS Doctors and Clinicians). A record outside them may still see patients: these files cover Medicare only.

  1. California79.5%
  2. United States78.7%

Internal Medicine Physician records in California, measured

  • In a Medicare file14,068 of 17,696 · 79.5% here, 78.7% nationally
  • In the CMS Doctors and Clinicians file11,077 · 62.6% here, 61.4% nationally
  • Not updated in five years or more10,832 · 61.2% here, 55.4% nationally
  • Median graduation year2004 · the 11,065 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207R00000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

17,696 NPPES records list internal medicine physician (207R00000X) as their primary taxonomy with a practice address in California: 45 per 100,000 residents against 44 nationally (50 states and D.C.). Los Angeles has 1,423 of them (8%).

A record is a registration a provider made and keeps up to date: it shows neither that the provider is licensed nor that they still practice there. The state's own license search is the check.

States with a similar number

  1. New York12,067
  2. Florida10,151
  3. Texas9,175
  4. Pennsylvania7,300

States with a similar rate per 100,000

  1. Minnesota45.9
  2. Ohio44.8
  3. New Hampshire48.0
  4. Maine42.8

The largest states

  1. New York12,067
  2. Florida10,151
  3. Texas9,175
  4. Pennsylvania7,300
  5. Illinois7,238

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy; 2023 Census population estimates. A registry record is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.