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Similar work.
More providers to explore.

Compare the published Medicare service mix of Lloyd C. Chang, MD with clinicians in the same registry specialty: Cardiovascular Disease.

SAN DIEGO, CA · Exact areaEdit location

2024 published service data · 73 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Julie Wong Martin, MD

Cardiovascular Disease · San Diego, CA

Shared published services
1 shared services · view billing descriptions
  • Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)
100%Service-mix similarityView profile →

Audrey Fallon Stephan, MD

Cardiovascular Disease · San Diego, CA

Shared published services
1 shared services · view billing descriptions
  • Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)
100%Service-mix similarityView profile →

Thomas K Ro, M.D.

Cardiovascular Disease · San Diego, CA

Shared published services
1 shared services · view billing descriptions
  • Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)
76%Service-mix similarityView profile →

Neel Patel, D.O.

Cardiovascular Disease · San Diego, CA

Shared published services
1 shared services · view billing descriptions
  • Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)
71%Service-mix similarityView profile →

Jenny Papazian, M.D.

Cardiovascular Disease · San Diego, CA

Shared published services
1 shared services · view billing descriptions
  • Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)
68%Service-mix similarityView profile →

Jason Parker Brown, M.D.

Cardiovascular Disease · San Diego, CA

Shared published services
1 shared services · view billing descriptions
  • Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)
67%Service-mix similarityView profile →

Andrew W Appis, M.D.

Cardiovascular Disease · San Diego, CA

Shared published services
1 shared services · view billing descriptions
  • Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)
66%Service-mix similarityView profile →

Janet Ina Ma, M.D.

Cardiovascular Disease · San Diego, CA

Shared published services
1 shared services · view billing descriptions
  • Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)
53%Service-mix similarityView profile →

Andrew Mitchell Kahn, M.D.

Cardiovascular Disease · San Diego, CA

Shared published services
1 shared services · view billing descriptions
  • Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)
48%Service-mix similarityView profile →

Alan J. Bier, M.D.

Cardiovascular Disease · San Diego, CA

Shared published services
1 shared services · view billing descriptions
  • Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)
46%Service-mix similarityView profile →

William D. Keen Jr., MD

Cardiovascular Disease · San Diego, CA

Shared published services
1 shared services · view billing descriptions
  • Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)
45%Service-mix similarityView profile →

Emily Dyson Scott, MD

Cardiovascular Disease · San Diego, CA

Shared published services
1 shared services · view billing descriptions
  • Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)
44%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.