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 281 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. Jonathan Semaan, DOSan Ysidro, CA 921731225722598
  2. Ivy Semenez, M.D.Lancaster, CA 935341114154291
  3. Lawrence Senffner, M.D.Arcata, CA 955211730120676
  4. Amara Seng, MD, PHDWest Hollywood, CA 900481184201469
  5. Sakara Seng, D.O.San Jose, CA 951281114472446
  6. Radharani SenigalaLos Angeles, CA 900071659477792
  7. Hyon Seo, MDAnaheim, CA 928071003987041
  8. Minji SeokOrange, CA 928681861133308
  9. Gyuhee Seong, MDSanta Monica, CA 904041962086835
  10. Saman Sepehr, MDFresno, CA 937201396449708
  11. Michael Sepulveda, MDSan Juan Bautista, CA 950451164425757
  12. Juan Sequeira, M.D.Pittsburg, CA 945651558389635
  13. Paola Sequeira, MD, MSPHLos Angeles, CA 900331821294919
  14. Cynthia Serabyn, DOUpland, CA 917861619990389
  15. Randa Serag, M.D.Irvine, CA 926041043403215
  16. Sannaporn Sereevinyayut, MDSacramento, CA 958231508944232
  17. Rachel SergahColton, CA 923241326722893
  18. Yelena Sergeyeva, MDElk Grove, CA 957581275607871
  19. Martin Serota, M.D.Commerce, CA 900401801884911
  20. Gina Serraiocco, MDLos Altos, CA 940221063504553
  21. Heralio Serrano, MDSan Francisco, CA 941141013065754
  22. Melissa Serrano, MDWest Hollywood, CA 900481811602899
  23. Noel Serrano, M.D.Oakland, CA 946111700925211
  24. Kathleen Serventi, MDSan Jose, CA 951221285706937
  25. Anuradha Seshadri, M.D.Los Angeles, CA 900491033439898
  26. Madhav Seshadri, M.D.San Francisco, CA 941431962866657
  27. Sonia Sethi, M.D.Palmdale, CA 935521245593839
  28. James Setiawan, MDFontana, CA 923351366590259
  29. Boone Seto, MDSacramento, CA 958231689752347
  30. David Seto, M.D.Los Angeles, CA 900121336373877
  31. Tyler Seto, M.D.Duarte, CA 910101669579579
  32. Matthew Sette, MDPorterville, CA 932571396240479
  33. Nigar Seven, M.DSouth San Francisco, CA 940801265775563
  34. Linda Sevilla, M.D.Van Nuys, CA 914051285785980
  35. Katelyn Seward, DOLoma Linda, CA 923501831830546
  36. Clifford Sewell, M.D.Danville, CA 945261851437123
  37. Amin Seyedkazemi, DOStockton, CA 952191124550595
  38. Lauri Seymour, MDFountain Valley, CA 927081114954187
  39. Begum Sezer, MDSanta Monica, CA 904041891157939
  40. Christopher Sha, MDSan Francisco, CA 941211356788152
  41. Yelena Shaanova, MDSanta Clara, CA 950511164614756
  42. Rami Shaarawy, M.D.Canoga Park, CA 913031154494755
  43. Payam Shabanzadeh, M.DLos Angeles, CA 900151912975350
  44. Shahid Shabbir, MDFresno, CA 937201891189072
  45. Shiva Shabnam, M.D.Downey, CA 902411679802037
  46. Sharna Shachar, M.DChula Vista, CA 919101619904703
  47. Parvin Shafa, M.D.Irvine, CA 926181447383559
  48. Neda Shafaghi, M.D.Los Angeles, CA 900481801060405
  49. Alireza Shafaie, MDSan Carlos, CA 940701609956218
  50. Arena Shafeque, MDFrench Camp, CA 952311487278560

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.