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Compare the published Medicare service mix of Marshall S Katz, M.D. with clinicians in the same registry specialty: Cardiovascular Disease.

BOSTON, MA · Exact areaEdit location

2024 published service data · 274 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Mark B. Stockman, MD

Cardiovascular Disease · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
  • 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)
84%Service-mix similarityView profile →

Meredith Jane Mulhearn, M.D.

Cardiovascular Disease · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
  • 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)
77%Service-mix similarityView profile →

Sanjay Shrivastava, MD

Cardiovascular Disease · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
  • 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)
73%Service-mix similarityView profile →

Jesse Xiaolong Yang

Cardiovascular Disease · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
  • 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)
72%Service-mix similarityView profile →

Andre Dejam, MD, PHD

Cardiovascular Disease · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
  • 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)
68%Service-mix similarityView profile →

Geoffrey S Hirsowitz, MD

Cardiovascular Disease · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
  • 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)
67%Service-mix similarityView profile →

Anshul Kumar Srivastava, M.D.

Cardiovascular Disease · Boston, MA

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)
  • Evaluation of single, dual, multiple lead or leadless pacemaker system or implantable defibrillator system, remote up to 90 days (93296)
53%Service-mix similarityView profile →

Kapil Kumar, M.D.

Cardiovascular Disease · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
  • 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)
51%Service-mix similarityView profile →

Anjum N Butte, MD

Cardiovascular Disease · Boston, MA

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)
49%Service-mix similarityView profile →

Daniel S. Kirshenbaum, M.D.

Cardiovascular Disease · Boston, MA

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)
48%Service-mix similarityView profile →

Mark Stephen Weinfeld, MD

Cardiovascular Disease · Boston, MA

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)
47%Service-mix similarityView profile →

Aalap Chokshi, M.D.

Cardiovascular Disease · Boston, MA

Shared published services
3 shared services · view billing descriptions
  • Insertion of needle into vein for collection of blood sample (36415)
  • 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)
47%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.