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 Stacy Tanner, MD with clinicians in the same registry specialty: Internal Medicine · Rheumatology (CMS).

KNOXVILLE, TN · Exact areaEdit location

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

Jeffry Dwayne Bieber, MD

Internal Medicine · Rheumatology (CMS) · Knoxville, TN

Shared published services
2 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)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
83%Service-mix similarityView profile →

Mohamed Magdy Mohamed Tageldin, MD

Internal Medicine · Rheumatology (CMS) · Knoxville, TN

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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
77%Service-mix similarityView profile →

Marcum Collins, M.D.

Rheumatology (CMS) · Knoxville, TN

Shared published services
2 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)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
77%Service-mix similarityView profile →

Mishal Abdullah, M.D.

Rheumatology (CMS) · Knoxville, TN

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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
67%Service-mix similarityView profile →

Christy C. Park, MD

Rheumatology (CMS) · Knoxville, TN

Shared published services
2 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)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
61%Service-mix similarityView profile →

Kenny R Sizemore, MD

Rheumatology (CMS) · Knoxville, TN

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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
37%Service-mix similarityView profile →

Marcin Tomasz Gornisiewicz, M.D.

Rheumatology (CMS) · Knoxville, TN

Shared published services
2 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
34%Service-mix similarityView profile →

William Brian Bush, M.D.

Rheumatology (CMS) · Knoxville, TN

Shared published services
2 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)
  • New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)
34%Service-mix similarityView profile →

Kenneth Robert Johnsen, MD

Rheumatology (CMS) · Knoxville, TN

Shared published services
2 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)
  • New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more (99205)
28%Service-mix similarityView profile →

Jay Henderson Warrick, M.D.

Rheumatology (CMS) · Knoxville, TN

Shared published services
1 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)
23%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.