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 228 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. Lou Nishimura, M.D.Carmichael, CA 956081831207315
  2. Kevin NishinoLoma Linda, CA 923541396301313
  3. Denyse Nishio, M.D.Sacramento, CA 958161093790743
  4. James Nitahara, MDPanorama City, CA 914021124176177
  5. Pamela Nitsos, M.D.Union City, CA 945871063413623
  6. David Nitta, MDSan Diego, CA 921341134181027
  7. John Nixon, M.D.Los Angeles, CA 900331720465586
  8. Howard Nizar, M.D.Bakersfield, CA 933111326124603
  9. Pierre NizetSanta Barbara, CA 931081245647601
  10. Esi Nkyekyer, MD, MPHBurlingame, CA 940101548585680
  11. Melvina NnamLong Beach, CA 908221154025682
  12. Amy Noack, MDSan Francisco, CA 941101083810949
  13. Mark Noah, M.D.Los Angeles, CA 900481972530483
  14. Laila NobakhtLong Beach, CA 908071730571373
  15. Alan Noble, M DSan Francisco, CA 941151841311461
  16. Jonathan Noble, M.D.Berkeley, CA 947041770571903
  17. Ricardo Noceda, MDAnaheim, CA 928071689745614
  18. Emily Nock, MDWalnut Creek, CA 945981881772986
  19. Tawny Marie Nocon-Patalinjug, MDLos Angeles, CA 900021043956998
  20. Constance Noel, DOOakland, CA 946111538385786
  21. Sang Noh, MDFountain Valley, CA 927081629068689
  22. Sangkyu Noh, DOSimi Valley, CA 930651730884727
  23. Sungryong Noh, M.D.Vacaville, CA 956881336440908
  24. Sarah Noonberg, MD, PHDCastro Valley, CA 945461023041449
  25. Bindu Noor, M.D.FACPLong Beach, CA 908221386602571
  26. Alireza Noorian, MDAnaheim, CA 928061467683508
  27. Nader Noorian, M.D.Mission Viejo, CA 926911861479057
  28. Shaya Noorian, BSLos Angeles, CA 900241477012508
  29. Ahmad Nooristani, M.D.Santa Maria, CA 934541659537306
  30. Kambiz Nooryani, M.D.Anaheim, CA 928071528401155
  31. Hessam Noralahi, MDSanta Clara, CA 950501306875596
  32. Jonathan Nordlicht, M.D.San Francisco, CA 941091356529531
  33. Meagan Nordstrom, MDSouth Lake Tahoe, CA 961501265052849
  34. Erin Noren, MDBeverly Hills, CA 902101386949535
  35. David Norene, M.D.Sacramento, CA 958161811092950
  36. Robert Noriega, M.D.Walnut Creek, CA 945971922043249
  37. Mary Norman, M.D.Culver City, CA 902321811002454
  38. Michael Norman, DOApple Valley, CA 923071912978123
  39. Keith Norris, MDLos Angeles, CA 900591033245808
  40. Philip Norris, MDSan Francisco, CA 941101578670378
  41. Robert Nosaka, MDPanorama City, CA 914021619025442
  42. Martin Nosan, MDLa Mesa, CA 919421184748311
  43. Gerard NotarioSan Rafael, CA 949011811558349
  44. Vinisha NotiManteca, CA 953371003267642
  45. Sheila Nouchian, M.D.Palo Alto, CA 943031073790713
  46. Pourandokht Nourbakhsh, MDEncino, CA 914361144724576
  47. Seyedmohsen Nourbakhsh, MDWest Hollywood, CA 900481992292684
  48. Sara Nouri, M.D.Santa Clara, CA 950511538208640
  49. David Nourok, M.D.Rancho Santa Fe, CA 920671194880013
  50. Dennis Nousaine, M.D.Jackson, CA 956421528079621

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.