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Compare the published Medicare service mix of Stephen Wayne Halpern, MD with clinicians in the same registry specialty: Cardiovascular Disease.

SANTA ROSA, CA · Exact areaEdit location

2024 published service data · 17 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

John J Hunter, M.D.

Cardiovascular Disease · Santa Rosa, 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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
  • Heart rhythm review and interpretation of continous external ekg over 8-15 days (93248)
79%Service-mix similarityView profile →

Michael Johl

Cardiovascular Disease · Santa Rosa, 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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
  • Heart rhythm review and interpretation of continous external ekg over 8-15 days (93248)
69%Service-mix similarityView profile →

Emily Lai Conway, M.D.

Cardiovascular Disease · Santa Rosa, 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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
  • Heart rhythm review and interpretation of continous external ekg over 8-15 days (93248)
66%Service-mix similarityView profile →

Jonathan A. Peng, M.D.

Cardiovascular Disease · Santa Rosa, 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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
  • Heart rhythm review and interpretation of continous external ekg over 8-15 days (93248)
64%Service-mix similarityView profile →

Thomas E Dunlap, M.D.

Cardiovascular Disease · Santa Rosa, 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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
  • Heart rhythm review and interpretation of continous external ekg over 8-15 days (93248)
62%Service-mix similarityView profile →

Tomas Vasiliauskas, M.D.

Cardiovascular Disease · Santa Rosa, 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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
  • Heart rhythm review and interpretation of continous external ekg over 8-15 days (93248)
62%Service-mix similarityView profile →

Pamela Maur, M.D.

Cardiovascular Disease · Santa Rosa, 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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
  • Heart rhythm review and interpretation of continous external ekg over 8-15 days (93248)
55%Service-mix similarityView profile →

Anu Agarwal, M.D.

Cardiovascular Disease · Santa Rosa, 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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
  • Heart rhythm review and interpretation of continous external ekg over 8-15 days (93248)
55%Service-mix similarityView profile →

Masis Babajanian, M.D.

Cardiovascular Disease · Santa Rosa, 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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
  • Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)
54%Service-mix similarityView profile →

Daniel Adam Brenner, MD / PHD

Cardiovascular Disease · Santa Rosa, 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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
  • Heart rhythm review and interpretation of continous external ekg over 8-15 days (93248)
54%Service-mix similarityView profile →

Sanjay Chamanlal Dhar, MD

Cardiovascular Disease · Santa Rosa, 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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
  • Heart rhythm review and interpretation of continous external ekg over 8-15 days (93248)
53%Service-mix similarityView profile →

Joel S Erickson, M.D.

Cardiovascular Disease · Santa Rosa, 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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
  • Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)
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.