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Compare the published Medicare service mix of Hector Castillo, M.D. with clinicians in the same registry specialty: Family Practice (CMS).

LOS ANGELES, CA · Exact areaEdit location

2024 published service data · 72 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Michael B Kamiel, MD

Endocrinology · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
78%Service-mix similarityView profile →

James T Roe, M.D.

Internal Medicine · Nephrology (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Hospital discharge day management, 30 minutes or less (99238)
60%Service-mix similarityView profile →

Hart C.m. Cohen, M.D.

Neurology (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
55%Service-mix similarityView profile →

Krikor I Kalindjian, M.D.

Family Practice · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Hospital discharge day management, 30 minutes or less (99238)
48%Service-mix similarityView profile →

Eben I Feinstein, M.D.

Internal Medicine · Nephrology (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
42%Service-mix similarityView profile →

Atta M Nawabi, M.D.

General Surgery (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
41%Service-mix similarityView profile →

Tuan T Ngo, M.D.

Internal Medicine · Nephrology (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
28%Service-mix similarityView profile →

Hiram Schubert Palmer, M.D.

Cardiovascular Disease (Cardiology) · Internal Medicine (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
27%Service-mix similarityView profile →

Hooman Madyoon, M.D.

Cardiac Surgery · Cardiovascular Disease (Cardiology) · Hospice/Palliative Care · Internal Medicine · Interventional Radiology (CMS) · Los Angeles, CA

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
27%Service-mix similarityView profile →

Mehdi Habibi, M.D.

Neurosurgery (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
26%Service-mix similarityView profile →

Peiman Arghavanifard

Internal Medicine (CMS) · Los Angeles, CA

Shared published services
1 shared services · view billing descriptions
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
25%Service-mix similarityView profile →

James Martin Richards, M.D.

Internal Medicine (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
  • Hospital discharge day management, 30 minutes or less (99238)
21%Service-mix similarityView profile →
How this comparison works

We use the same calendar year of CMS Medicare Physician & Other Practitioners data for both providers. Published non-drug service counts are combined by HCPCS code across places of service. We apply log(1 + count), normalize the vectors, and compare them using cosine similarity.

Candidates share the reference provider’s current NPPES primary taxonomy and match the location you enter. We examine up to 500 candidates in NPI order, then show up to 12 with the highest positive similarity within that set. The score is not a percentile, medical recommendation, or prediction. Suppressed services are not estimated. Medicare fee-for-service data does not describe a provider’s entire practice.

Source: CMS Medicare Physician & Other Practitioners - by Provider and Service : 2024-12-01 · Published May 21, 2026.