HCPList Know more before you call. About
A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of John W Powell, MD with clinicians in the same registry specialty: Radiation Oncology (CMS).

NY · Exact areaEdit location

2024 published service data · 298 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Khanh Thi Nha Vu, M.D.

Radiation Oncology (CMS) · Jamestown, NY

Shared published services
3 shared services · view billing descriptions
  • Radiation treatment management, 5 treatment sessions (77427)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Calculation of radiation therapy dose (77300)
77%Service-mix similarityView profile →

Camilo G Torres, MD

Specialty details in registry · Kingston, NY

Shared published services
3 shared services · view billing descriptions
  • Radiation treatment management, 5 treatment sessions (77427)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Calculation of radiation therapy dose (77300)
71%Service-mix similarityView profile →

Beryl Mccormick, MD

Radiation Oncology (CMS) · New York, NY

Shared published services
3 shared services · view billing descriptions
  • Radiation treatment management, 5 treatment sessions (77427)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Calculation of radiation therapy dose (77300)
69%Service-mix similarityView profile →

Alexander Slade, M.D., PH.D.

Radiation Oncology (CMS) · Stony Brook, NY

Shared published services
3 shared services · view billing descriptions
  • Radiation treatment management, 5 treatment sessions (77427)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Calculation of radiation therapy dose (77300)
68%Service-mix similarityView profile →

Gregory Hare, MD

Specialty details in registry · Buffalo, NY

Shared published services
3 shared services · view billing descriptions
  • Radiation treatment management, 5 treatment sessions (77427)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Calculation of radiation therapy dose (77300)
66%Service-mix similarityView profile →

Jeremy Setton, M.D.

Radiation Oncology (CMS) · New York, NY

Shared published services
3 shared services · view billing descriptions
  • Radiation treatment management, 5 treatment sessions (77427)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Calculation of radiation therapy dose (77300)
66%Service-mix similarityView profile →

Borys R Mychalczak, MD

Radiation Oncology (CMS) · Sleepy Hollow, NY

Shared published services
3 shared services · view billing descriptions
  • Radiation treatment management, 5 treatment sessions (77427)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Calculation of radiation therapy dose (77300)
65%Service-mix similarityView profile →

Hong Zhang, MD

Radiation Oncology (CMS) · Rochester, NY

Shared published services
3 shared services · view billing descriptions
  • Radiation treatment management, 5 treatment sessions (77427)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Calculation of radiation therapy dose (77300)
65%Service-mix similarityView profile →

Duncan Edward Savage, MD

Radiation Oncology (CMS) · Olean, NY

Shared published services
3 shared services · view billing descriptions
  • Radiation treatment management, 5 treatment sessions (77427)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Calculation of radiation therapy dose (77300)
65%Service-mix similarityView profile →

Ronald D Ennis, MD

Radiation Oncology (CMS) · New York, NY

Shared published services
3 shared services · view billing descriptions
  • Radiation treatment management, 5 treatment sessions (77427)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Calculation of radiation therapy dose (77300)
65%Service-mix similarityView profile →

George Varsos, M.D.

Radiation Oncology (CMS) · Astoria, NY

Shared published services
3 shared services · view billing descriptions
  • Radiation treatment management, 5 treatment sessions (77427)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Calculation of radiation therapy dose (77300)
65%Service-mix similarityView profile →

Shan-Chin Chen, MD

Radiation Oncology (CMS) · Brooklyn, NY

Shared published services
3 shared services · view billing descriptions
  • Radiation treatment management, 5 treatment sessions (77427)
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Calculation of radiation therapy dose (77300)
64%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.