A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Glenn S Chrystal, MD with clinicians in the same registry specialty: Radiation Oncology (CMS).

BURLINGTON, NC · 25 milesEdit location
Within 25 miles · Approximate ZIP-area distance

Approximate straight-line distances between ZIP-area centers; a city search starts from the average of its ZIP centers. Uses the primary reported practice ZIP, not an exact office address or driving distance. Records without matched coordinates are excluded. How distance works

2024 published service data · 10 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Brandon Mullins, M.D., M.S.

Radiation Oncology (CMS) · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy (G6002)
  • Radiation treatment management, 5 treatment sessions (77427)
94%Service-mix similarity~19.7 milesView profile →

Sarah Elizabeth Squire, M.D.

Radiation Oncology (CMS) · Greensboro, NC

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Radiation treatment management, 5 treatment sessions (77427)
  • Calculation of radiation therapy dose (77300)
82%Service-mix similarity~20.1 milesView profile →

James Donald Kinard, MD

Radiation Oncology (CMS) · Greensboro, NC

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Radiation treatment management, 5 treatment sessions (77427)
  • Calculation of radiation therapy dose (77300)
81%Service-mix similarity~20.1 milesView profile →

Matthew A Manning, MD

Radiation Oncology (CMS) · Greensboro, NC

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Radiation treatment management, 5 treatment sessions (77427)
  • Calculation of radiation therapy dose (77300)
80%Service-mix similarity~20.1 milesView profile →

Colette Joan Shen, MD

Radiation Oncology (CMS) · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Radiation treatment management, 5 treatment sessions (77427)
  • Calculation of radiation therapy dose (77300)
79%Service-mix similarity~19.7 milesView profile →

John S Moody, MD

Radiation Oncology (CMS) · Greensboro, NC

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Radiation treatment management, 5 treatment sessions (77427)
  • Calculation of radiation therapy dose (77300)
79%Service-mix similarity~20.1 milesView profile →

Kevin Alexander Pearlstein, MD

Radiation Oncology (CMS) · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Radiation treatment management, 5 treatment sessions (77427)
  • Calculation of radiation therapy dose (77300)
78%Service-mix similarity~19.7 milesView profile →

David E Morris, MD

Radiation Oncology (CMS) · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Radiation treatment management, 5 treatment sessions (77427)
  • Calculation of radiation therapy dose (77300)
75%Service-mix similarity~19.7 milesView profile →

James Anthony Palermo, MD

Radiation Oncology (CMS) · Greensboro, NC

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Radiation treatment management, 5 treatment sessions (77427)
  • Calculation of radiation therapy dose (77300)
70%Service-mix similarity~20.1 milesView profile →

Dana Lynne Casey, MD

Radiation Oncology (CMS) · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Ct guidance for insertion of radiation therapy fields (77014)
  • Calculation of radiation therapy dose (77300)
  • Design and construction of complex radiation treatment device (77334)
59%Service-mix similarity~19.7 milesView 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 approximate distance 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.