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 15 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. Seong Kim, NPLos Angeles, CA 900951356360861
  2. Steven Kim, MDFullerton, CA 928351003886698
  3. Tracy Kim, MDHarbor City, CA 907101497803340
  4. Saeeda Kirmani, M.D.San Diego, CA 921611851306526
  5. Janice Kirsch, M.D., M.P.H.Berkeley, CA 947051487857595
  6. Elias Kiwan, M.D.Sacramento, CA 958161790875276
  7. Jacob Kjelland, MDTravis Afb, CA 945351043604606
  8. Howard Kleckner, MDHayward, CA 945451386722148
  9. Calvin Klein, MDSanta Monica, CA 904041033236765
  10. Pamela Klein, MDSan Francisco, CA 941231851254171
  11. Phyllis Klein, M.D.West Covina, CA 917901932166519
  12. Samuel Klempner, M.DLos Angeles, CA 900251134329378
  13. Leonid Kleynberg, M.D.Los Angeles, CA 900481891750212
  14. Roman Kleynberg, M.D.Los Angeles, CA 900481700103298
  15. Vera Kleynberg, M.D.Los Angeles, CA 900481568428324
  16. Kevin Knopf, M.D.Berkeley, CA 947041881626687
  17. Dheeraj Kodali, M.D.Stockton, CA 952041508179607
  18. Han Koh, MDBellflower, CA 907061508933441
  19. Tatjana Kolevska, MDVallejo, CA 945891760554596
  20. Sudarsan Kollimuttathuillam, MDIrvine, CA 926181902324528
  21. Gottfried Konecny, MDLos Angeles, CA 900241427190115
  22. Lynn Kong, MDVentura, CA 930031952356933
  23. Piyanuch Kongtim, MD, PHD.Orange, CA 928681720696438
  24. Ahrin Koppel, MDTruckee, CA 961611144433541
  25. Michael Kosmo, MDEscondido, CA 920251891742847
  26. Charles Kossman, M.D.San Diego, CA 921201184799892
  27. Steven Kossman, M.D.San Diego, CA 921201477628634
  28. David Koster, M.D.Fresno, CA 937201063406163
  29. Michael Kosty, M.D.La Jolla, CA 920371801857099
  30. Dinesh Kotak, MDRoseville, CA 956611558449280
  31. Divya Koura, M.D.La Jolla, CA 920371053471318
  32. Rafid Kouz, MD.Mission Hills, CA 913451346272994
  33. Gabor Kovacs, M.D.Laguna Beach, CA 926511215081575
  34. Eliana Kozin, BCH BAOSan Diego, CA 921231609021849
  35. Juliet Kral, MDMenlo Park, CA 940251225046188
  36. Elizabeth Krecker, MDWoodland Hills, CA 913671679640510
  37. Oleg Krijanovski, MD, PHDBerkeley, CA 947041841376704
  38. Yelena Krijanovski, M.D.Fairfield, CA 945341497877500
  39. Timothy Kristedja, MDSanta Monica, CA 904041881897494
  40. Joan Kroener, M.D.La Jolla, CA 920371720067150
  41. Maxwell Kroloff, M.D.Los Angeles, CA 900951629463682
  42. Yelena Krupitskaya, M.D.Pleasant Hill, CA 945231750565529
  43. Grace Ku, M.D.Sacramento, CA 958171538145719
  44. Nora Ku, MDRedondo Beach, CA 902771649269465
  45. Ming Kuan, M.D.San Leandro, CA 945771043279995
  46. Samir Kubba, M.D.San Bernardino, CA 924041164405882
  47. Madelaine Kuiper, NPSanta Monica, CA 904041407107196
  48. Sameer Kulkarni, MDLos Angeles, CA 900271568788545
  49. Vasanth Kumar, M.D.La Canada, CA 910111689657496
  50. Siddharth Kunte, M.D.Santa Clarita, CA 913551639585870

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.