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Compare the published Medicare service mix of Brent A Zamzow, D.O. with clinicians in the same registry specialty: Urology (CMS).

TN · Exact areaEdit location

2024 published service data · 179 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Justin K Kropf, MD

Urology (CMS) · Columbia, TN

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Diagnostic exam of bladder and urethra using an endoscope (52000)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
72%Service-mix similarityView profile →

Peter G Lawrence, M.D.

Urology (CMS) · Jackson, TN

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Urinalysis, manual test (81002)
  • Diagnostic exam of bladder and urethra using an endoscope (52000)
72%Service-mix similarityView profile →

Wayne P Tongco, MD

Urology (CMS) · Johnson City, TN

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Diagnostic exam of bladder and urethra using an endoscope (52000)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
71%Service-mix similarityView profile →

Peter Donald Sershon, M.D.

Urology (CMS) · Maryville, TN

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Urinalysis, manual test (81002)
  • Diagnostic exam of bladder and urethra using an endoscope (52000)
69%Service-mix similarityView profile →

Joshua Bryant Byrd, M.D.

Urology (CMS) · Maryville, TN

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Diagnostic exam of bladder and urethra using an endoscope (52000)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
69%Service-mix similarityView profile →

Phillip Stokes, MD

Urology (CMS) · Johnson City, TN

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Diagnostic exam of bladder and urethra using an endoscope (52000)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
69%Service-mix similarityView profile →

Gregory E Stewart

Urology (CMS) · Murfreesboro, TN

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Diagnostic exam of bladder and urethra using an endoscope (52000)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
68%Service-mix similarityView profile →

Sarah C Flury, MD

Urology (CMS) · Nashville, TN

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Urinalysis, manual test (81002)
  • Diagnostic exam of bladder and urethra using an endoscope (52000)
68%Service-mix similarityView profile →

Lincoln Todd Olsen, M.D.

Urology (CMS) · Johnson City, TN

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Diagnostic exam of bladder and urethra using an endoscope (52000)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
67%Service-mix similarityView profile →

John C House, M.D.

Urology (CMS) · Chattanooga, TN

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Diagnostic exam of bladder and urethra using an endoscope (52000)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
66%Service-mix similarityView profile →

David Sahaj, M.D.

Urology (CMS) · Chattanooga, TN

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Diagnostic exam of bladder and urethra using an endoscope (52000)
  • Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)
66%Service-mix similarityView profile →

Paul Arthur Hatcher, MD

Specialty details in registry · Knoxville, TN

Shared published services
3 shared services · view billing descriptions
  • Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)
  • Urinalysis, manual test (81002)
  • Diagnostic exam of bladder and urethra using an endoscope (52000)
66%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.