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Compare the published Medicare service mix of Olga Lyass, M.D. with clinicians in the same registry specialty: Diagnostic Radiology (CMS).

CA · Exact areaEdit location

2024 published service data · 54 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Richard R Black, DO

Diagnostic Radiology · Nuclear Medicine (CMS) · Murrieta, CA

Shared published services
3 shared services · view billing descriptions
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
  • Nuclear medicine study of liver and bile duct system (78226)
  • Nuclear medicine study of bone and/or joint whole body (78306)
69%Service-mix similarityView profile →

Lalitha Ramanna, MD

Diagnostic Radiology (CMS) · Torrance, CA

Shared published services
3 shared services · view billing descriptions
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
  • Nuclear medicine study of liver and bile duct system (78226)
  • Nuclear medicine study of bone and/or joint whole body (78306)
58%Service-mix similarityView profile →

Michael K.c. Kan, M.D.

Diagnostic Radiology · Nuclear Medicine (CMS) · La Jolla, CA

Shared published services
3 shared services · view billing descriptions
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
  • Nuclear medicine study of liver and bile duct system (78226)
  • Nuclear medicine study of lung ventilation and circulation (78582)
55%Service-mix similarityView profile →

Daniel H. Silverman, MD

Diagnostic Radiology · Internal Medicine · Nuclear Medicine (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
  • Nuclear medicine study of bone and/or joint whole body (78306)
  • Nuclear medicine study of lung ventilation and circulation (78582)
53%Service-mix similarityView profile →

Penny Robillard Vandestreek, D.O.

Nuclear Medicine (CMS) · Roseville, CA

Shared published services
3 shared services · view billing descriptions
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
  • Nuclear medicine study of liver and bile duct system (78226)
  • Nuclear medicine study of bone and/or joint whole body (78306)
52%Service-mix similarityView profile →

William Michael Pace, MD

Nuclear Medicine (CMS) · Camarillo, CA

Shared published services
3 shared services · view billing descriptions
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
  • Nuclear medicine study of liver and bile duct system (78226)
  • Nuclear medicine study of bone and/or joint whole body (78306)
51%Service-mix similarityView profile →

Mark Steven Bernard, MD

Nuclear Medicine (CMS) · Fresno, CA

Shared published services
3 shared services · view billing descriptions
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
  • Nuclear medicine study of liver and bile duct system (78226)
  • Nuclear medicine study of bone and/or joint whole body (78306)
49%Service-mix similarityView profile →

Louise Ej Thomson, MD

Diagnostic Radiology · Nuclear Medicine (CMS) · Los Angeles, CA

Shared published services
3 shared services · view billing descriptions
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
  • Nuclear medicine study of liver and bile duct system (78226)
  • Nuclear medicine study of bone and/or joint whole body (78306)
48%Service-mix similarityView profile →

Amir H Rad, M.D

Nuclear Medicine (CMS) · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
  • Nuclear medicine study of liver and bile duct system (78226)
  • Nuclear medicine study of bone and/or joint whole body (78306)
46%Service-mix similarityView profile →

David Wayne Gentry, M.D.

Nuclear Medicine (CMS) · Loma Linda, CA

Shared published services
3 shared services · view billing descriptions
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
  • Nuclear medicine study of liver and bile duct system (78226)
  • Nuclear medicine study of bone and/or joint whole body (78306)
41%Service-mix similarityView profile →

Ramona Tabib, M.D.

Nuclear Medicine (CMS) · Beverly Hills, CA

Shared published services
1 shared services · view billing descriptions
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
40%Service-mix similarityView profile →

Geetha Ashok, MD

Nuclear Medicine (CMS) · Panorama City, CA

Shared published services
1 shared services · view billing descriptions
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
40%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.