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Compare the published Medicare service mix of Miguel A. Villalona Calero, M.D. with clinicians in the same registry specialty: Hematology/Oncology · Medical Oncology (CMS).

ORANGE, CA · Exact areaEdit location

2024 published service data · 38 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

John P Fruehauf, MD

General Surgery · Medical Oncology (CMS) · Orange, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
93%Service-mix similarityView profile →

Edward L Nelson, MD

Internal Medicine · Medical Oncology (CMS) · Orange, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
93%Service-mix similarityView profile →

Sandy Liu, M.D.

Hematology/Oncology · Internal Medicine (CMS) · Orange, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
89%Service-mix similarityView profile →

Rita Sanghvi Mehta, MD

Internal Medicine (CMS) · Orange, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
86%Service-mix similarityView profile →

Fa-Chyi Lee, M.D.

Hematology/Oncology (CMS) · Orange, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
84%Service-mix similarityView profile →

Sai-Hong I Ou, MD

Specialty details in registry · Orange, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
84%Service-mix similarityView profile →

Bhavana Pathak, M.D.

Internal Medicine (CMS) · Orange, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
80%Service-mix similarityView profile →

Nataliya Mar, MD

Hematology/Oncology (CMS) · Orange, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
80%Service-mix similarityView profile →

Misako Nagasaka, MD

Hematology/Oncology (CMS) · Orange, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
78%Service-mix similarityView profile →

Arash Rezazadeh Kalebasty, M.D.

Hematology/Oncology (CMS) · Orange, CA

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
78%Service-mix similarityView profile →

April Choi, MD

Hematology/Oncology (CMS) · Orange, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
73%Service-mix similarityView profile →

Jeffrey Ahn, M.D.

Hematology/Oncology (CMS) · Orange, CA

Shared published services
2 shared services · view billing descriptions
  • Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
71%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.