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Compare the published Medicare service mix of Janet Ina Ma, M.D. 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.

Tripti Gupta

Cardiovascular Disease · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
65%Service-mix similarityView profile →

Richard Gary Friedman, M.D.

Cardiovascular Disease · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
63%Service-mix similarityView profile →

Bruno R. Cotter, M.D.

Cardiovascular Disease · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
61%Service-mix similarityView profile →

Mattheus Kamal Ramsis

Cardiovascular Disease · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
60%Service-mix similarityView profile →

David Torres Barba, M.D., PHD

Cardiovascular Disease · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
56%Service-mix similarityView profile →

Calvin Yeang, MD

Cardiovascular Disease · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
  • Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes (99223)
53%Service-mix similarityView profile →

Lloyd C. Chang, 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)
53%Service-mix similarityView profile →

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)
53%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)
53%Service-mix similarityView profile →

Jerrold Glassman, M.D.

Cardiovascular Disease · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
52%Service-mix similarityView profile →

Edward Keith Duran, M.D.

Cardiovascular Disease · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
52%Service-mix similarityView profile →

Thomas Edward Diggs, M.D.

Cardiovascular Disease · San Diego, CA

Shared published services
3 shared services · view billing descriptions
  • Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
51%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.