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 79 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. Anjali Dixit, MDRoseville, CA 956611932488566
  2. Patricia Dizmang, M.D.Napa, CA 945581194790261
  3. Dominic Dizon, M.D.Fresno, CA 937201659384295
  4. Chistopher Do, M.D.San Jose, CA 951211407876659
  5. Chuong Do, MDAlameda, CA 945011164507836
  6. David Do, MDSan Jose, CA 951221801859459
  7. David DoElk Grove, CA 957581851041180
  8. Henry Do, M.D.Downey, CA 902411538115290
  9. Hieu Duc Do, M.DLoma Linda, CA 923541861805939
  10. Huy Do, M.D.Torrance, CA 905021245614569
  11. Jacqueline Do, M.D.Tustin, CA 927801689646952
  12. John-Khoa Do, D.O.Downey, CA 902401710908223
  13. Johnny Do, M.D.Orange, CA 928681235371675
  14. Khai Do, M.D.Santa Ana, CA 927051396939526
  15. Lam Do, M.D.San Jose, CA 951211588689814
  16. Lily Do, DOBellflower, CA 907061841433653
  17. Lynne Do, M.D.Sacramento, CA 958171386627644
  18. Minh-Quan DoSan Jose, CA 951281215497656
  19. Rebecca Do, DOAnaheim, CA 928061073140182
  20. Steven Do, D.O.Alhambra, CA 918011598129629
  21. Tal Do, MDAnaheim, CA 928011093275331
  22. Tam Do, M.D.Torrance, CA 905021134540719
  23. Thai Do, M.D.Corona, CA 928801619176559
  24. Trang Do, M.D.San Jose, CA 951121063442663
  25. Tri Do, MDOakland, CA 946121053402651
  26. Dorothy Do-Williams, M.D.Stockton, CA 952041215237631
  27. Aivi Doan, M.D./M.P.H.Arcadia, CA 910061316301658
  28. Jennifer Doan, MDMilpitas, CA 950351205913142
  29. Kenneth Doan, M.D.San Diego, CA 921221932119120
  30. Nguyen Doan, M.D.Riverside, CA 925211538547302
  31. Phuong Anh Doan, M.D.Huntington Beach, CA 926481629031968
  32. Paige DobalianLos Angeles, CA 900951184120230
  33. Emma DobbinsSan Francisco, CA 941431376897223
  34. Mary Dobbins, M.D.San Mateo, CA 944011407837693
  35. Deborah Doberne, MDWalnut Creek, CA 945961184916082
  36. Sarah Dobro, MDBerkeley, CA 947041316367980
  37. Robert Dobrow, MDSan Francisco, CA 941181356336051
  38. Dolly Doctor, MDEncinitas, CA 920241205871456
  39. Pradeep Doddamreddy, M.D.Los Angeles, CA 900331275804080
  40. John Dodge, MDSan Diego, CA 921031770510489
  41. Levi Dodge, D.ODavis, CA 956161598258386
  42. Garland Dodoo, M.D.Pasadena, CA 911011043262421
  43. David Dodson, M.DSanta Barbara, CA 931051619943834
  44. Sarah Doernberg, MDSan Francisco, CA 941431245406628
  45. Steven Doerstling, MDStanford, CA 943051811637416
  46. Hannan Dogar, MDGlendale, CA 912081336726686
  47. Raymond Doh, MDLos Angeles, CA 900271356542237
  48. Jesse Dohemann, M.D.San Francisco, CA 941151396857462
  49. Paul Doherty, M.D.Palm Springs, CA 922621831183045
  50. Clarissa Doi, MDStanford, CA 943051467680264

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.