NPPES file of Aug 9, 2026

Gastroenterology Physician in California

2,140 NPPES records list gastroenterology physician with a practice address in California, 5.5 per 100,000 residents, the 25th highest rate of 51. Los Angeles and San Diego have the most; each record links to the provider's NPI and the California license search. Page 30 of 43.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207RG0100X · 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, 195

  1. Los Angeles195
  2. San Diego125
  3. San Francisco103
  4. Sacramento90
  5. Stanford70

Gastroenterology Physician records in California

  1. Kumaravel Perumalsamy, M.D.Lancaster, CA 935341851484323
  2. Damian Pestana, M.D.Paradise, CA 959691487603254
  3. Ralph Peterson, MDOakland, CA 946051851311104
  4. Steven Petit, MD AMCPasadena, CA 911051376567495
  5. John Petrini, M.D.Santa Barbara, CA 931051184736977
  6. Edward Pham, MDStanford, CA 943051033572565
  7. Nathan Pham, MDSan Leandro, CA 945771720582539
  8. Thu Pham, M.D.Riverside, CA 925061780942037
  9. Jennifer PhanNewport Beach, CA 926631780002055
  10. Quang Phan, M.D.Garden Grove, CA 928431982698957
  11. Phiet Phung, MDHuntington Beach, CA 926461396950465
  12. Cindy Piao, MDSacramento, CA 958231205377637
  13. Eugenio Picazo, MDPalo Alto, CA 943011831251503
  14. Nipaporn Pichetshote, M.D.Los Angeles, CA 900331033375910
  15. Victorio Pidlaoan, MDModesto, CA 953551871813097
  16. Edward Piken, M.D.Torrance, CA 905051447275938
  17. Mark Pimentel, M.D.Los Angeles, CA 900481750319356
  18. Michael Pimienta, MDLos Angeles, CA 900171114486339
  19. Joseph Pisegna, MDLos Angeles, CA 900951295755882
  20. Nicholas PlaconeSan Luis Obispo, CA 934011023513009
  21. Liza Plafsky, MDMurrieta, CA 925631356845325
  22. Richard Plotzker, MDModesto, CA 953501861489908
  23. Paul Pockros, M.D.La Jolla, CA 920371124082748
  24. Tommy Poirier, M.D.Sacramento, CA 958161053320234
  25. Bhupesh Pokhrel, MDSan Diego, CA 921031649432790
  26. Ronald Policastro, M.D.Fountain Valley, CA 927081962671636
  27. Douglas Politoske, MDSan Diego, CA 921231528077740
  28. David Pompa, MDRoseville, CA 956611114001104
  29. John Ponsiglione, M.D.San Diego, CA 921031760488795
  30. Donald Portocarrero, D.O.Arcadia, CA 910071841503570
  31. Andrea Portocarrero Castillo, M.D.Stanford, CA 943051174978852
  32. Vijay Pottathil, M.D.Stanford, CA 943051053546945
  33. Jonathan PourmoradyLos Angeles, CA 900481487097119
  34. Sudha Praba, MDCamp Pendleton, CA 920551730171489
  35. Vijay Prabhakar, M.D.Fullerton, CA 928351932593167
  36. Devang PrajapatiFresno, CA 937211558396069
  37. Arati Pratap, M.D.Martinez, CA 945531740228931
  38. Vijayalakshmi Pratha, MDSan Diego, CA 921031992892707
  39. Jeffrey Pressman, MDSan Diego, CA 921231447269667
  40. Thomas Prindiville, M.D.Sacramento, CA 958171104879923
  41. Jonathan Pritikin, MDSan Francisco, CA 941151386723419
  42. Dale Prokupek, MDBeverly Hills, CA 902111780725408
  43. Jatinder Pruthi, M.D.Lancaster, CA 935341205852985
  44. Shirley Pua, M.D.Visalia, CA 932911164426961
  45. Nicolas Pulham, M.D.San Diego, CA 921541437451143
  46. John Pyne, MDRiverside, CA 925051679640536
  47. Tahir Qaseem, MDHemet, CA 925431295864395
  48. Yen Quang, M.D.San Francisco, CA 941091326228487
  49. Michael Quezada, M.D.Arroyo Grande, CA 934201326466467
  50. Keith Quint, M.D.Fresno, CA 937201710215116

Source: CMS NPPES, primary taxonomy 207RG0100X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 25 of 51 per resident

  1. Colorado5.7
  2. Hawaii5.6
  3. South Carolina5.6
  4. California5.5
  5. Michigan5.5
  6. Arizona5.4
  7. 50 states and D.C.6.2

Source: CMS NPPES, primary taxonomy 207RG0100X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

83.1% of these records appear in a Medicare file, against 84.4% 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. California83.1%
  2. United States84.4%

Gastroenterology Physician records in California, measured

  • In a Medicare file1,779 of 2,140 · 83.1% here, 84.4% nationally
  • In the CMS Doctors and Clinicians file1,538 · 71.9% here, 73.7% nationally
  • Not updated in five years or more1,280 · 59.8% here, 55.6% nationally
  • Median graduation year2002 · the 1,538 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207RG0100X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

2,140 NPPES records list gastroenterology physician (207RG0100X) as their primary taxonomy with a practice address in California: 5.5 per 100,000 residents against 6.2 nationally (50 states and D.C.). Los Angeles has 195 of them (9%).

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 York1,797
  2. Florida1,513
  3. Texas1,478
  4. Pennsylvania1,049

States with a similar rate per 100,000

  1. Michigan5.5
  2. Arizona5.4
  3. Indiana5.4
  4. Vermont5.4

The largest states

  1. New York1,797
  2. Florida1,513
  3. Texas1,478
  4. Pennsylvania1,049
  5. Illinois887

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.