Registry data as of Aug 27, 2026

Colon & Rectal Surgery Physician in California

142 NPPES records list colon & rectal surgery physician with a California practice address, 0.4 per 100,000 residents, 33 of 49 per resident. Los Angeles and Sacramento have the most; each record links to the provider's NPI and the California license search. Page 1 of 3.

CMS NPPES registry, loaded Aug 27, 2026; 2023 Census estimates · NUCC 208C00000X · method

Los Angeles has the most, 15

Source: CMS NPPES, primary taxonomy 208C00000X by practice city, loaded Aug 27, 2026.

Colon & Rectal Surgery Physician records in California

  1. Kenneth Aaron, M.D.Newport Beach, CA 926601689809162
  2. Michael Abel, M.D.San Francisco, CA 941181447253380
  3. Piyush Aggarwal, MDWalnut Creek, CA 945981700070273
  4. Allison Aka, MDLoma Linda, CA 923501891130100
  5. Ahmed Alkoraishi, MDHayward, CA 945451609954478
  6. Robert Allen, MDSanta Cruz, CA 950651871586610
  7. Shohrat Annaberdyev, M.D.Roseville, CA 956611386888147
  8. Elizabeth Arcila, M.D.Irvine, CA 926181093056780
  9. Glenn Ault, M.D.Los Angeles, CA 900331295749802
  10. Anil Bahadursingh, MDAnaheim, CA 928071750485363
  11. Mark Bazalgette, MDNovato, CA 949451891806014
  12. Keith Beiermeister, M.D.La Jolla, CA 920371508002775
  13. Robert Belt, MDLaguna Beach, CA 926511023223849
  14. Robert Brookover, MDLa Jolla, CA 920371376897629
  15. Ricardo Cacdac, MDRancho Mirage, CA 922701225130362
  16. Liza Capiendo, M.D.Beverly Hills, CA 902101013924943
  17. William Carveth, MDFresno, CA 937101003992918
  18. Eric Changchien, MDRiverside, CA 925051710137401
  19. Hueylan Chern, M.D.San Francisco, CA 941151942461645
  20. Tracey Childs, MDSanta Monica, CA 904041114999489
  21. Yanek Chiu, M.D.San Francisco, CA 941181588667422
  22. Sarah Choi, M.D.Los Angeles, CA 900331578095162
  23. Albert Chung, MD, MBASanta Ana, CA 927051700011533
  24. Kyle Cologne, M.D.Los Angeles, CA 900331164678082
  25. Richard Coughlin, MD FACSLos Gatos, CA 950321659359818
  26. Theodore Coutsoftides, MDHuntington Beach, CA 926491144411414
  27. Diana Davio, M.D.Lancaster, CA 935341023217577
  28. Aaron Dawes, MD, PHDPalo Alto, CA 943041285923540
  29. Marjun Duldulao, M.D.Los Angeles, CA 900891063684850
  30. Theodore Edson, M.D.San Diego, CA 921341679572572
  31. Samuel Eisenstein, MDSan Diego, CA 921031194983932
  32. Carlos Esparza MonzaviIrvine, CA 926181750762001
  33. Adil Farooqui, MDLos Angeles, CA 900341417016163
  34. Michael Fealk, D.O.Chico, CA 959261578769923
  35. Eiman Firoozmand, M.D.Beverly Hills, CA 902101053322719
  36. Phillip Fleshner, MDLos Angeles, CA 900481881695286
  37. Sean FlynnSacramento, CA 958171972923217
  38. Eric Fu, MDYorba Linda, CA 928861629060108
  39. Dhruvil Gandhi, M.D.Vista, CA 920831083887277
  40. Ivy Gardner, MDSacramento, CA 958161972967008
  41. John Garry, MDFresno, CA 937101669558573
  42. Bassem Ghobrial, M.D.French Camp, CA 952311619359874
  43. Maziar Ghodsian, D.O.Beverly Hills, CA 902121063622181
  44. Juliane Golan, M.D.Pasadena, CA 911051801237177
  45. Harris Goldman, M DEncino, CA 913161881963775
  46. Michael Gottlieb, M.D.Danville, CA 945261609858075
  47. Gregory Greaney, M.D.Santa Barbara, CA 931051609984137
  48. Anita Gregory, M.D.Orange, CA 928681881655868
  49. John Griffin, M.D.Loma Linda, CA 923541821014903
  50. Brooke Gurland, MDPalo Alto, CA 943041891889101

California ranks 33 of 49 per resident

  1. North Dakota0.4
  2. New Mexico0.4
  3. Tennessee0.4
  4. California0.4
  5. Kentucky0.4
  6. Iowa0.3
  7. 50 states and D.C.0.5

Source: CMS NPPES, primary taxonomy 208C00000X by practice state, loaded Aug 27, 2026; records per 100,000 residents, 2023 Census estimates.

What the count covers

The CMS National Plan and Provider Enumeration System currently lists 142 Colon & Rectal Surgery Physician providers with a primary practice address in California, all registered under the Colon & Rectal Surgery NUCC taxonomy branch. Each clinician on this roster selected Colon & Rectal Surgery Physician as their primary taxonomy at NPI enrollment, a self-reported classification that is updated whenever the provider files a correction with CMS. The count excludes organizations (group practices, hospitals, clinics operate under separate NPIs) and excludes providers who chose a different primary specialty even if they practice Colon & Rectal Surgery Physician part-time. Every figure is drawn from the federal National Provider Identifier Registry (CMS NPPES) - more than 7 million providers, maintained since May 2007, with 2024 Medicare Part D data, and, according to CMS, can be searched, compared, and traced in our methodology.

At 142 enrolled providers, Colon & Rectal Surgery Physician in California is a limited-supply market, that matters for search-radius decisions, because patients in California outside the largest metros often need to broaden to adjacent cities to find a local Colon & Rectal Surgery Physician clinician. The directory below is paginated 50 providers at a time (3 pages total) and is sorted alphabetically by last name, so scanning for a specific practice usually goes faster than scrolling; on the provider detail page you'll find the full NPPES record including address, phone, credentials, and any published Medicare Part D prescribing activity for 2024.

Before contacting anyone on this list, verify the practice is still at the address shown, NPPES refreshes monthly, but providers who have relocated, retired, or changed employers may not have filed an NPI update yet. Important: PlainDoctor is a directory of publicly available CMS government data covering Colon & Rectal Surgery Physician providers in California, not a quality ranking, a board-certification verifier, or medical advice. Always confirm credentials through the NPPES NPI Registry, the California medical board, and, where relevant, the ABMS, AOA, or the specialty's primary certifying body before making any clinical decision. Nothing on this page substitutes for a conversation with a licensed clinician.

States with a similar number

  1. New York139
  2. Texas132
  3. Florida123
  4. Ohio101

States with a similar rate per 100,000

  1. Tennessee0.4
  2. Kentucky0.4
  3. Iowa0.3
  4. Maryland0.4

The largest states

  1. New York139
  2. Texas132
  3. Florida123
  4. Ohio101
  5. Pennsylvania93

Source: CMS National Plan and Provider Enumeration System (NPPES), file loaded Aug 27, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy; 2023 Census population estimates. A registry record is not a license.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.