NPPES file of Aug 9, 2026

Hematology & Oncology Physician in California

1,583 NPPES records list hematology & oncology physician with a practice address in California, 4.1 per 100,000 residents, the 19th 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 5 of 32.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207RH0003X · 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, 153

  1. Los Angeles153
  2. San Diego88
  3. Sacramento77
  4. San Francisco64
  5. Orange63

Hematology & Oncology Physician records in California

  1. Michael Cerniglia, MDWestlake Village, CA 913611386106284
  2. Wanxing Chai-Ho, M.D.Los Angeles, CA 900241023371515
  3. Walailuk Chaiyarat, MDConcord, CA 945201811140478
  4. Erin Chamberlain, M.D.San Luis Obispo, CA 934011902249469
  5. Bryan Chan, MD, MPHTorrance, CA 905021518699982
  6. David Chan, MDTorrance, CA 905051972591378
  7. Edward Chan, M.D.San Francisco, CA 941331033155213
  8. Ellie Chan, M.D.Fresno, CA 937011578761656
  9. Jason Chan, M.D. PH.D.Los Angeles, CA 900481154735660
  10. Joseph Chan, M.D.Fontana, CA 923351497796189
  11. Arati Chand, M.D.Los Angeles, CA 900331942434212
  12. Swarna Chanduri, MDPomona, CA 917671629050489
  13. Alison Chang, MDPalo Alto, CA 943011205253465
  14. David Chang, MDLos Angeles, CA 900951952336737
  15. Grace ChangSanta Monica, CA 904041508144783
  16. Jae C Chang, MDOrange, CA 928681982784070
  17. James Chang, M.D.Bakersfield, CA 933081154422004
  18. Jeremy Chang, M.D.San Diego, CA 921031699206839
  19. Johnny Chang, MDTarzana, CA 913561366465304
  20. Kevin Chang, MDOxnard, CA 930301649219452
  21. Mark Chang, DOUpland, CA 917861861954182
  22. Linnea Chap, M.D.Beverly Hills, CA 902111700839362
  23. Bhupinder Chatrath, MDHanford, CA 932301023082088
  24. Preet Chaudhary, M.D., PHDLos Angeles, CA 900891487626354
  25. Preeti Chaudhary, M.D.Pomona, CA 917671255597456
  26. Uzair Chaudhary, M.D.Clovis, CA 936111629186580
  27. Neal Chawla, M.D./ M.B.B.S.Santa Monica, CA 904031669906665
  28. Karen Chee, M.D.San Mateo, CA 944021487637310
  29. Rajeswari Chellappah, M.D.Roseville, CA 956611770758617
  30. Caroline ChenSanta Monica, CA 904041184087504
  31. Chung-Jiah Chen, MDSan Diego, CA 921271548792377
  32. Daniel Chen, MDStanford, CA 943051154457323
  33. Everett Chen, MDBellflower, CA 907061295802114
  34. Gigi Chen, M.D.Pleasant Hill, CA 945231821073636
  35. Isabella Chen, M.D.Ventura, CA 930031053621730
  36. Isan Chen, M.D.San Diego, CA 921211407142409
  37. Jeng-Hsien Chen, M.D.Escondido, CA 920251457464117
  38. Jian Chen, MDRancho Mirage, CA 922701801956099
  39. Justin ChenSacramento, CA 958171326433244
  40. Luke Chen, M.D.Huntington Beach, CA 926481265451736
  41. Weber Chen, M.D.Pasadena, CA 911051679504393
  42. Yu-Wei Chen, M.D.San Diego, CA 921031245694801
  43. Brian Chun Fang Cheng, M.D.Downey, CA 902411215315940
  44. David Cheng, M.DFremont, CA 945391104892652
  45. Howard Cheng, M.D.Laguna Hills, CA 926531366435299
  46. Jeany Cheng, N.P.Arcadia, CA 910061205855772
  47. Paul Cheng, M.D.San Diego, CA 921031528190980
  48. Yu Cheng, M.D.Tracy, CA 953771003241118
  49. Adithya Chennamadhavuni, M.D.Modesto, CA 953551669880522
  50. Grace Cherry, NPLos Angeles, CA 900951659306447

Source: CMS NPPES, primary taxonomy 207RH0003X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 19 of 51 per resident

  1. Ohio4.4
  2. New Jersey4.3
  3. Louisiana4.1
  4. California4.1
  5. Nebraska4.0
  6. Virginia4.0
  7. 50 states and D.C.4.2

Source: CMS NPPES, primary taxonomy 207RH0003X 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 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. California83.1%
  2. United States82.9%

Hematology & Oncology Physician records in California, measured

  • In a Medicare file1,315 of 1,583 · 83.1% here, 82.9% nationally
  • In the CMS Doctors and Clinicians file1,126 · 71.1% here, 71.3% nationally
  • Not updated in five years or more917 · 57.9% here, 54.3% nationally
  • Median graduation year2003 · the 1,124 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207RH0003X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

1,583 NPPES records list hematology & oncology physician (207RH0003X) as their primary taxonomy with a practice address in California: 4.1 per 100,000 residents against 4.2 nationally (50 states and D.C.). Los Angeles has 153 of them (10%).

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 York1,163
  2. Texas922
  3. Florida818
  4. Pennsylvania784

States with a similar rate per 100,000

  1. Nebraska4.0
  2. Louisiana4.1
  3. Virginia4.0
  4. North Carolina4.0

The largest states

  1. New York1,163
  2. Texas922
  3. Florida818
  4. Pennsylvania784
  5. Illinois666

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.