NPPES file of Aug 9, 2026

Hematology (Internal Medicine) Physician in California

175 NPPES records list hematology (internal medicine) physician with a practice address in California, 0.4 per 100,000 residents, the 15th highest rate of 48. Duarte and Stanford have the most; each record links to the provider's NPI and the California license search. Page 1 of 4.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207RH0000X · method

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Duarte has the most, 61

  1. Duarte61
  2. Stanford44
  3. San Francisco15
  4. Los Angeles14
  5. San Diego8

Hematology (Internal Medicine) Physician records in California

  1. John Adamson, MDSan Diego, CA 921221477504801
  2. Mhd Monzr Al Malki, M.D.Duarte, CA 910101043489362
  3. Ibrahim Aldoss, M.D.Duarte, CA 910101861692485
  4. Haris Ali, M.D.Duarte, CA 910101467672907
  5. Julio Alvarenga Thiebaud, M.D.Irvine, CA 926181457770497
  6. Joseph Alvarnas, M.D.Duarte, CA 910101558321745
  7. Idoroenyi Amanam, M.D.Duarte, CA 910101205257920
  8. Sally Arai, MDStanford, CA 943051881739530
  9. Ahmed Aribi, MDDuarte, CA 910101912024910
  10. Andrew Artz, M.D., M.S.Duarte, CA 910101306859772
  11. John Baird, MDDuarte, CA 910101427493998
  12. Brian Ball, M.D.Duarte, CA 910101356754683
  13. Edward Ball, M.D.San Diego, CA 921031093740110
  14. Caroline Berube, MDStanford, CA 943051538201405
  15. Sushma Bharadwaj, MDStanford, CA 943051265745731
  16. Ravi Bhatia, MDDuarte, CA 910101326059700
  17. Amanda BlackmonDuarte, CA 910101841685997
  18. Azra Borogovac, M.D.Irvine, CA 926181164818639
  19. Rondeep Brar, MDStanford, CA 943051932389277
  20. Adam Braun, MDDuarte, CA 910101356831317
  21. William Buchholz, MDLos Altos, CA 940241699774406
  22. Lihua Budde, MD, PHDDuarte, CA 910101124030028
  23. Carlos Carrera, M.D.San Diego, CA 921031417050345
  24. Steven Chan, M.D./PH.D.Stanford, CA 943051669633871
  25. Mark Chao, M.D., PH.D.Stanford, CA 943051770872632
  26. Robert Chen, MDLos Angeles, CA 900391083751358
  27. Judy Cheng, MDStanford, CA 943051568577906
  28. Ching Chiu, M.D.Tulare, CA 932741740336098
  29. Alfred ChungSan Francisco, CA 941431417375627
  30. Vincent Chung, MDDuarte, CA 910101588771364
  31. Susan Claster, MDLos Angeles, CA 900591659471829
  32. Daniel CoreyOakland, CA 946021457518318
  33. Peter Curtin, M.D.Duarte, CA 910101316953862
  34. Ellen CusanoSan Diego, CA 921211295599447
  35. Saurabh Dahiya, M.DStanford, CA 943051184943730
  36. Alexey Danilov, M.D.Duarte, CA 910101487769733
  37. Debajyoti Datta, M.D.San Francisco, CA 941431093073090
  38. Vikramjit Dhillon, D.O.Duarte, CA 910101528688223
  39. Robert Diep, M.D.Palo Alto, CA 943041497140537
  40. Wei Ding, MDStanford, CA 943051265454201
  41. Stanley Drew, M.D.Northridge, CA 913251982741435
  42. Tamara Dunn, M.D.Palo Alto, CA 943051689854416
  43. Irene Dy, MDCastro Valley, CA 945461528393063
  44. Erik Eckhert, M.D.Stanford, CA 943051134653298
  45. Asiri Ediriwickrema, MDPalo Alto, CA 943051174943195
  46. Hany Elmariah, MDStanford, CA 943051427348044
  47. Stephen Embury, M.D.Half Moon Bay, CA 940191093154841
  48. Bita Fakhri, M.D., M.P.HPalo Alto, CA 943041568729424
  49. Donald Feinstein, M.D.Los Angeles, CA 900331861429581
  50. Esther Fermin, MDVictorville, CA 923951013018514

Source: CMS NPPES, primary taxonomy 207RH0000X: records by practice city and the list of records, file of Aug 9, 2026.

California ranks 15 of 48 per resident

  1. Michigan0.6
  2. Maryland0.5
  3. Pennsylvania0.5
  4. California0.4
  5. Washington0.4
  6. Maine0.4
  7. 50 states and D.C.0.4

Source: CMS NPPES, primary taxonomy 207RH0000X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

89.1% of these records appear in a Medicare file, against 80.5% 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. California89.1%
  2. United States80.5%

Hematology (Internal Medicine) Physician records in California, measured

  • In a Medicare file156 of 175 · 89.1% here, 80.5% nationally
  • In the CMS Doctors and Clinicians file136 · 77.7% here, 70.8% nationally
  • Not updated in five years or more59 · 33.7% here, 46.9% nationally
  • Median graduation year2006 · the 135 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207RH0000X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

175 NPPES records list hematology (internal medicine) physician (207RH0000X) as their primary taxonomy with a practice address in California: 0.4 per 100,000 residents against 0.4 nationally (50 states and D.C.). Duarte has 61 of them (35%).

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 York161
  2. Minnesota128
  3. Massachusetts117
  4. Ohio89

States with a similar rate per 100,000

  1. Washington0.4
  2. New Jersey0.4
  3. Pennsylvania0.5
  4. Illinois0.4

The largest states

  1. New York161
  2. Minnesota128
  3. Massachusetts117
  4. Ohio89
  5. Texas73

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.