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Compare the published Medicare service mix of Glenn A Kerwin, MD with clinicians in the same registry specialty: Diagnostic Radiology (CMS).

MARIETTA, GA · Exact areaEdit location

2024 published service data · 14 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Jay Desai

Diagnostic Radiology (CMS) · Marietta, GA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Fine needle aspiration biopsy using ultrasound guidance, first growth (10005)
  • Ultrasound scan of head and neck soft tissue (76536)
86%Service-mix similarityView profile →

Chris Chan Moo Sung

Diagnostic Radiology (CMS) · Marietta, GA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Fine needle aspiration biopsy using ultrasound guidance, first growth (10005)
  • Ultrasound scan of head and neck soft tissue (76536)
82%Service-mix similarityView profile →

Alan M Zuckerman, MD

Diagnostic Radiology (CMS) · Marietta, GA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Fine needle aspiration biopsy using ultrasound guidance, first growth (10005)
  • Ultrasound scan of head and neck soft tissue (76536)
79%Service-mix similarityView profile →

Mark I Silverstein, MD

Diagnostic Radiology (CMS) · Marietta, GA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Fine needle aspiration biopsy using ultrasound guidance, first growth (10005)
  • Ultrasound scan of head and neck soft tissue (76536)
79%Service-mix similarityView profile →

Ethan Jesse Speir, MD

Interventional Radiology (CMS) · Marietta, GA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Fine needle aspiration biopsy using ultrasound guidance, first growth (10005)
  • Ultrasound scan of head and neck soft tissue (76536)
77%Service-mix similarityView profile →

Tarak Harikrishna Patel, MD

Diagnostic Radiology · Interventional Radiology (CMS) · Marietta, GA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Fine needle aspiration biopsy using ultrasound guidance, first growth (10005)
  • Ultrasound scan of head and neck soft tissue (76536)
76%Service-mix similarityView profile →

Michael Jordan Ray, M.D.

Diagnostic Radiology · Interventional Radiology (CMS) · Marietta, GA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Fine needle aspiration biopsy using ultrasound guidance, first growth (10005)
  • Ultrasound scan of head and neck soft tissue (76536)
74%Service-mix similarityView profile →

Nathan W. Ertel, M.D.

Diagnostic Radiology (CMS) · Marietta, GA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Fine needle aspiration biopsy using ultrasound guidance, first growth (10005)
  • Ultrasound scan of head and neck soft tissue (76536)
74%Service-mix similarityView profile →

Thomas Patrick Murphy, M.D.

Diagnostic Radiology (CMS) · Marietta, GA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Fine needle aspiration biopsy using ultrasound guidance, first growth (10005)
  • Ultrasound scan of head and neck soft tissue (76536)
72%Service-mix similarityView profile →

Chad G Kuhlman, MD

Diagnostic Radiology (CMS) · Marietta, GA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Fine needle aspiration biopsy using ultrasound guidance, first growth (10005)
  • Ultrasound scan of head and neck soft tissue (76536)
70%Service-mix similarityView profile →

Roger S.h. Williams, DO

Diagnostic Radiology · Interventional Radiology (CMS) · Marietta, GA

Shared published services
3 shared services · view billing descriptions
  • X-ray of chest, 1 view (71045)
  • Ultrasound scan of head and neck soft tissue (76536)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
70%Service-mix similarityView profile →

Ashutosh V Rao, MD

Diagnostic Radiology (CMS) · Marietta, GA

Shared published services
3 shared services · view billing descriptions
  • Fine needle aspiration biopsy using ultrasound guidance, first growth (10005)
  • Ultrasound scan of head and neck soft tissue (76536)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
65%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.