A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Reggie Zhan, M.D. with clinicians in the same registry specialty: Dermatology · Pathology (CMS).

CA · Exact areaEdit location

2024 published service data · 31 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Belinda H Tan, MD

Specialty details in registry · Torrance, CA

Shared published services
1 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
78%Service-mix similarityView profile →

Matthew Russell Muenster, MD

Pathology (CMS) · Fresno, CA

Shared published services
1 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
68%Service-mix similarityView profile →

Roupen Yaghsezian, MD

Pathology (CMS) · Laguna Niguel, CA

Shared published services
1 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
62%Service-mix similarityView profile →

Masoud Asgari, M.D.

Pathology (CMS) · San Ramon, CA

Shared published services
1 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
61%Service-mix similarityView profile →

Frank Feng Luo, MD

Specialty details in registry · Pasadena, CA

Shared published services
1 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
59%Service-mix similarityView profile →

Julie Gay Duquette, M.D.

Pathology (CMS) · Newport Beach, CA

Shared published services
1 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
59%Service-mix similarityView profile →

Jochen Thorsten Schaefer, M.D

Pathology (CMS) · Santa Monica, CA

Shared published services
1 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
58%Service-mix similarityView profile →

Emily Ann Green, MD

Pathology (CMS) · Walnut Creek, CA

Shared published services
1 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
58%Service-mix similarityView profile →

Raelynn M Tucker, M.D.

Dermatology · Pathology (CMS) · Laguna Beach, CA

Shared published services
1 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
57%Service-mix similarityView profile →

Raul Delrosario, M.D.

Pathology (CMS) · Laguna Beach, CA

Shared published services
1 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
56%Service-mix similarityView profile →

Victoria Claire Vaughan, M.D.

Pathology (CMS) · Chico, CA

Shared published services
1 shared services · view billing descriptions
  • Pathology examination of tissue using a microscope, intermediate complexity (88305)
56%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.