NPPES file of Aug 9, 2026

Surgical Oncology Physician in California

250 NPPES records list surgical oncology physician with a practice address in California, 0.6 per 100,000 residents, the 15th highest rate of 50. Los Angeles and Duarte have the most; each record links to the provider's NPI and the California license search. Page 3 of 5.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 2086X0206X · 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, 38

  1. Los Angeles38
  2. Duarte26
  3. San Diego16
  4. San Francisco16
  5. Sacramento15

Surgical Oncology Physician records in California

  1. Mary Hadcock, M.D.Fresno, CA 937201942247606
  2. Philip Haigh, MDLos Angeles, CA 900271124199195
  3. Nicole Hanson, DODuarte, CA 910101134749914
  4. Sarah HartmanSan Francisco, CA 941431558822122
  5. Laura Hatfield, MD, FACSSan Francisco, CA 941151225201379
  6. Mark Healy, MDSalinas, CA 939011437445798
  7. Dawn Hills, M.D.Long Beach, CA 908021669447736
  8. Lun Hom, M.D.Long Beach, CA 908061821078544
  9. Ivy HuangSan Francisco, CA 941431043601727
  10. Scott Hundahl, M.D.Mather, CA 956551467438952
  11. Ronald Hurst, M.D.Los Angeles, CA 900251619069820
  12. David Hyams, MDRancho Mirage, CA 922701992755391
  13. Fumito Ito, MD PHDLos Angeles, CA 900331386609584
  14. Jordan Jackson, MDSan Francisco, CA 941431902268360
  15. James Jakowatz, MDOrange, CA 928681649225384
  16. Sean Judge, MDSacramento, CA 958171801277751
  17. Brian Kadera, M.D.Santa Monica, CA 904041083849327
  18. Hyunwoo Kang, MDLos Angeles, CA 900331861855157
  19. Nimmi Kapoor, M.D.Encino, CA 914361437221611
  20. Hamed Kargozaran, M.D.Sacramento, CA 958171467433938
  21. Scott Karlan, M.D.West Hollywood, CA 900481982688982
  22. Leah Kelley, M.D.Greenbrae, CA 949041013043314
  23. Vijay Khatri, M.D.Sacramento, CA 958171003899642
  24. Rhami KhorfanLoma Linda, CA 923501144617002
  25. Bradford Kim, M.D.Upland, CA 917861215297080
  26. Jonathan King, M.D.Santa Monica, CA 904041497948350
  27. Kimberly Kirkwood, MDSan Francisco, CA 941431669437810
  28. Ioannis Konstantinidis, M.D.West Hollywood, CA 900481477789972
  29. Geoffrey Krampitz, M.D., PH.D.Burlingame, CA 940101003040353
  30. Sujit Kulkarni, MDLos Angeles, CA 900331760682819
  31. Ryan Lamm, M.D.Duarte, CA 910101891228482
  32. Karen T Lane, MDOrange, CA 928681316027444
  33. Maithao Le, M.D.Duarte, CA 910101760613574
  34. Joanna Lee, M.D.Fremont, CA 945381235428475
  35. John Lee, M.D.Sacramento, CA 958161427032630
  36. Laura Lee, M.D.Palm Springs, CA 922621568545374
  37. Aaron Lewis, MDSouth Pasadena, CA 910301053542100
  38. Janet Li, MDSan Jose, CA 951191790102192
  39. Erin Lin, D.O.Orange, CA 928681780983411
  40. Meng-Fey Lin-Duffy, DOS Pasadena, CA 910301609108836
  41. Thomas Lomis, M.D.Van Nuys, CA 914051023037199
  42. Alexandra Lopez-Aguiar, M.D.Orange, CA 928681477972040
  43. Andrew Lowy, MDSan Diego, CA 921031346218179
  44. Fabrizio Luca, M.D.Loma Linda, CA 923541902355589
  45. Thinzar Lwin, MDDuarte, CA 910101356684997
  46. Kelly Mahuron, M.D.Duarte, CA 910101760725790
  47. Parisa Malekzadeh, M.D.Corona, CA 928821992055149
  48. Melissa Mao, MDOrange, CA 928681245594498
  49. Susan MasseyBeverly Hills, CA 902111619486644
  50. Christopher McNicoll, M.D.Anaheim, CA 928061164764841

Source: CMS NPPES, primary taxonomy 2086X0206X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 15 of 50 per resident

  1. Wisconsin0.7
  2. Pennsylvania0.7
  3. Texas0.7
  4. California0.6
  5. Rhode Island0.6
  6. Florida0.6
  7. 50 states and D.C.0.6

Source: CMS NPPES, primary taxonomy 2086X0206X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

83.6% of these records appear in a Medicare file, against 82.9% 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. California83.6%
  2. United States82.9%

Surgical Oncology Physician records in California, measured

  • In a Medicare file209 of 250 · 83.6% here, 82.9% nationally
  • In the CMS Doctors and Clinicians file184 · 73.6% here, 75.5% nationally
  • Not updated in five years or more111 · 44.4% here, 49.5% nationally
  • Median graduation year2004 · the 184 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 2086X0206X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

250 NPPES records list surgical oncology physician (2086X0206X) as their primary taxonomy with a practice address in California: 0.6 per 100,000 residents against 0.6 nationally (50 states and D.C.). Los Angeles has 38 of them (15%).

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 York209
  2. Texas206
  3. Florida138
  4. Pennsylvania92

States with a similar rate per 100,000

  1. Louisiana0.6
  2. Wisconsin0.7
  3. Ohio0.7
  4. Illinois0.6

The largest states

  1. New York209
  2. Texas206
  3. Florida138
  4. Pennsylvania92
  5. Ohio84

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.