NPPES file of Aug 9, 2026

Clinical Pathology/Laboratory Medicine Physician in California

131 NPPES records list clinical pathology/laboratory medicine physician with a practice address in California, 0.3 per 100,000 residents, the 27th highest rate of 49. San Francisco and Los Angeles have the most; each record links to the provider's NPI and the California license search. Page 2 of 3.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207ZP0105X · method

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

San Francisco has the most, 28

  1. San Francisco28
  2. Los Angeles17
  3. San Diego10
  4. San Luis Obispo7
  5. West Hollywood7

Clinical Pathology/Laboratory Medicine Physician records in California

  1. Thomas Jackson, MDSan Francisco, CA 941181427017151
  2. James Jacobs, M.D.Roseville, CA 956611992886261
  3. Robert James, M.D.Ventura, CA 930031063578227
  4. Steven Jobst, M.D.San Luis Obispo, CA 934011740225648
  5. Jacob Jorgensen, M.D.Folsom, CA 956301548896491
  6. Janet Kallo, MDSan Francisco, CA 941171265467708
  7. Heba Kamal, MDSan Francisco, CA 941181639146699
  8. Yuet Kan, M.D.San Francisco, CA 941431194761809
  9. Noriyuki Kasahara, MD, PHDLos Angeles, CA 900571033616636
  10. Michael Kelner, M.D.San Diego, CA 921031174679849
  11. Elham Khanafshar, MDSan Francisco, CA 941431235196296
  12. Nikka Khorsandi, MD, MPHSan Francisco, CA 941071134794928
  13. Hye Kyung Kim, MDMartinez, CA 945531841373594
  14. Ji Yeon Kim, MD, MPHNorth Hollywood, CA 916051003011677
  15. David Kon, M.D.Los Angeles, CA 900331720072473
  16. Seunghyug Kwon, MD, MPHWest Hills, CA 913041578914669
  17. Jose Lagera, MDFresno, CA 937201457403255
  18. Thomas Lane, M.D.San Diego, CA 921031649224395
  19. David Lawrence, M.D.San Luis Obispo, CA 934011184651101
  20. Dzung Le, M.D.San Diego, CA 921031770526931
  21. Mai Le, M.D.Palo Alto, CA 943061649406737
  22. Jennifer Lee, MDWest Hollywood, CA 900481467081844
  23. Martina Lefterova, M.D., PH.D.Stanford, CA 943051023496775
  24. David Lepay, M.D.San Diego, CA 921211174680623
  25. Joseph LownikWest Hollywood, CA 900481982453338
  26. Kurt Lundquist, M.D.San Luis Obispo, CA 934011437194131
  27. William MartinLos Angeles, CA 900331881913689
  28. Pogos MartinyanWestlake Village, CA 913621932624145
  29. Laurence Marton, M.D.Palo Alto, CA 943061265678833
  30. Godfred Masinde, PHDSan Francisco, CA 941021770359226
  31. Thomas McDonald, MDValencia, CA 913551407265903
  32. Craig Mermel, MD, PHDLos Gatos, CA 950321770844748
  33. Steve Mertens, MDSebastopol, CA 954721124034814
  34. Steven Miller, MD, PHDSan Francisco, CA 941071710909940
  35. Morvarid Moayeri, M.D., PH.D.San Francisco, CA 941431366777443
  36. Ari Molofsky, MD, PHDSan Francisco, CA 941431104151984
  37. John Moretto, MDSan Francisco, CA 941181023086717
  38. Gerald Morris, M.D. / PH.D.La Jolla, CA 920931700805215
  39. Richard S Newman, MDOrange, CA 928681043390214
  40. Valerie Ng, MD PHDOakland, CA 946021023111481
  41. Grant Nybakken, M.D.South San Francisco, CA 940801104088400
  42. Dennis O'Malley, M.D.Aliso Viejo, CA 926561184681223
  43. Kerby Oberg, M.D.Loma Linda, CA 923541619081718
  44. Sean Owens, DVMDavis, CA 956161164058640
  45. Nandan Padmanabha, M.B.B.SSan Francisco, CA 941071811570757
  46. James Pappas, M.D.Loma Linda, CA 923541023235025
  47. David Park, M.D., PH.D.San Francisco, CA 941431396928040
  48. Maria Patino, MDSan Francisco, CA 941181639138399
  49. Bruce Patterson, MDPalo Alto, CA 943041710166285
  50. William Paxton, M.D.Encinits, CA 920241356566061

Source: CMS NPPES, primary taxonomy 207ZP0105X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 27 of 49 per resident

  1. Alabama0.4
  2. Florida0.4
  3. Wyoming0.3
  4. California0.3
  5. North Carolina0.3
  6. Vermont0.3
  7. 50 states and D.C.0.4

Source: CMS NPPES, primary taxonomy 207ZP0105X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

35.9% of these records appear in a Medicare file, against 49.3% 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. California35.9%
  2. United States49.3%

Clinical Pathology/Laboratory Medicine Physician records in California, measured

  • In a Medicare file47 of 131 · 35.9% here, 49.3% nationally
  • In the CMS Doctors and Clinicians file40 · 30.5% here, 41.7% nationally
  • Not updated in five years or more83 · 63.4% here, 65.6% nationally
  • Median graduation year1998 · the 40 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207ZP0105X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

131 NPPES records list clinical pathology/laboratory medicine physician (207ZP0105X) as their primary taxonomy with a practice address in California: 0.3 per 100,000 residents against 0.4 nationally (50 states and D.C.). San Francisco has 28 of them (21%).

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 York102
  2. Pennsylvania86
  3. Florida83
  4. Wisconsin80

States with a similar rate per 100,000

  1. North Carolina0.3
  2. Colorado0.3
  3. Alabama0.4
  4. Maryland0.4

The largest states

  1. New York102
  2. Pennsylvania86
  3. Florida83
  4. Wisconsin80
  5. Minnesota79

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.