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Compare the published Medicare service mix of Brian James Riegel, MD with clinicians in the same registry specialty: Cardiovascular Disease (Cardiology) · Internal Medicine (CMS).

NY · Exact areaEdit location

2024 published service data · 15 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Wilbur Jeremiah Asheld, DO

Cardiovascular Disease (Cardiology) · Nuclear Medicine (CMS) · West Islip, NY

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)
58%Service-mix similarityView profile →

Nidal Makhoul, MD FACC FACP

Cardiovascular Disease (Cardiology) (CMS) · Plattsburgh, NY

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)
  • 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 only (93010)
58%Service-mix similarityView profile →

Diwakar Jain, MD

Cardiovascular Disease (Cardiology) · Nuclear Medicine (CMS) · Hawthorne, NY

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)
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
56%Service-mix similarityView profile →

Van Hong D Nguyen, M.D.

Cardiovascular Disease (Cardiology) · Nuclear Medicine (CMS) · New York, NY

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)
55%Service-mix similarityView profile →

Nicholas Papapietro, M.D.

Cardiovascular Disease (Cardiology) · Nuclear Medicine (CMS) · Brooklyn, NY

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)
53%Service-mix similarityView profile →

Ossama R Samuel, M.D.

Cardiovascular Disease (Cardiology) · Nuclear Medicine (CMS) · Brooklyn, NY

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)
52%Service-mix similarityView profile →

Khalid Kamal Hassan, M.D.

Cardiovascular Disease (Cardiology) · Internal Medicine · Nuclear Medicine (CMS) · Brooklyn, NY

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 →

John Joseph Wilbur Asheld, DO

Cardiovascular Disease (Cardiology) (CMS) · West Islip, NY

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)
  • 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 only (93010)
51%Service-mix similarityView profile →

Mofid Khalil-Ibrahim, MD

Cardiovascular Disease (Cardiology) · Nuclear Medicine (CMS) · Buffalo, NY

Shared published services
3 shared services · view billing descriptions
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
  • Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician (93016)
42%Service-mix similarityView profile →

Margarita Chernovolenko, M.D.

Nuclear Medicine (CMS) · New York, NY

Shared published services
3 shared services · view billing descriptions
  • Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)
  • Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician (93015)
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
31%Service-mix similarityView profile →

Lynne Lalor Johnson, M.D.

Specialty details in registry · New York, NY

Shared published services
3 shared services · view billing descriptions
  • Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician (93015)
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
  • Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician (93016)
30%Service-mix similarityView profile →

Harout Yacoub, MD

Cardiovascular Disease (Cardiology) · Diagnostic Radiology (CMS) · New York, NY

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)
  • Nuclear medicine studies of heart muscle at rest and with stress and spect (78452)
  • Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision by physician (93016)
25%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.