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 243 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. Vimali Paul, M.D.Chico, CA 959731700881448
  2. Desmond Paul-Coker, D.O.Fresno, CA 937221720340805
  3. Marja Paulino, MDMission Hills, CA 913451710304845
  4. Rita Paulis, MBCHBSan Diego, CA 921611134709520
  5. Peter Paull, M.D.Los Angeles, CA 900951114280211
  6. Orestes Pavia Sanchez, M.D.Lamont, CA 932411841231263
  7. Maureen Pavy, MDSanta Clara, CA 950511598837312
  8. Samuel Paw, MDFontana, CA 923351063571669
  9. Sanyukta Pawar, M.D.Rocklin, CA 957651366550253
  10. Faramarz Payandeh, MDSan Clemente, CA 926731346250701
  11. Matthew Payne, M.D.Santa Barbara, CA 931011558520676
  12. Maria Theresa Paz-Lum, MDSan Rafael, CA 949031205082799
  13. Daniel Pearce, D.O.Riverside, CA 925071376635383
  14. David Pearce, MDSan Francisco, CA 941101528098019
  15. Jessica Pearce, MDSan Jose, CA 951281043905086
  16. Tillman Pearce, MDSan Francisco, CA 941071386487577
  17. Alec Pearlstein, MDBeverly Hills, CA 902101134268501
  18. Keon Pearson, MDSouth San Francisco, CA 940801386264794
  19. Mary Pearson, M.D.San Francisco, CA 941101518128891
  20. Christopher Pease, MDRoseville, CA 956611902105737
  21. Brian Pecha, MDEldridge, CA 954311033117692
  22. Anita Pechenenko, M.D.Travis Afb, CA 945351356098495
  23. Viacheslav Pecherskiy, M.D.San Diego, CA 921011467723098
  24. Parvin Peddi, MDSan Francisco, CA 941211447346390
  25. Maren Pedersen, MDPalo Alto, CA 943041417021163
  26. Petra Pederson, MD, PHDLa Jolla, CA 920371285377697
  27. Nathaniel Pedley, MDLos Angeles, CA 900951669978532
  28. Roger Peeks, M.D.North Hollywood, CA 916051336258961
  29. Gary Peer, MDLivermore, CA 945501245346956
  30. Scott Peerenboom, D.O.Oakland, CA 946091528385002
  31. Diane Pege, MDLakeport, CA 954531346324589
  32. Patricia Pegram, M.D.Rancho Palos Verdes, CA 902751942574314
  33. Ksenija Peharda, MDCamarillo, CA 930101083615280
  34. Allison Pei, MDStanford, CA 943051962152579
  35. Albert Peinado, MDBakersfield, CA 933111962590802
  36. Laurence Peiperl, MDSan Francisco, CA 941171861543142
  37. Brenda Pelayo, DOFontana, CA 923351255911053
  38. Jose Pelayo, M.D.Chula Vista, CA 919131376556357
  39. Louis Pelfini, MDPetaluma, CA 949541871710871
  40. Joshua Peloquin, DOWestminster, CA 926831831636083
  41. Matthew Peltz, D.O.Redding, CA 960011174537104
  42. Mariya Pelvitski, D.O.Santa Clara, CA 950511811278682
  43. Radha Pema, MDHarbor City, CA 907101497803225
  44. Riga Pemba, MD.Mission Hills, CA 913451497780050
  45. Cesar Pena, M.D.Chula Vista, CA 919101295846723
  46. David PenaColton, CA 923241205396231
  47. Heather Pena, MDSaint Helena, CA 945741881703973
  48. Jose Pena, MDChula Vista, CA 919101437170008
  49. Nereida Pena, DOMoreno Valley, CA 925551205571064
  50. Miguel Pena-Ruiz, M.D.San Diego, CA 921541063622819

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.