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Compare the published Medicare service mix of Alena Janda Markmann, MD, PHD with clinicians in the same registry specialty: Infectious Disease (CMS).

CHAPEL HILL, NC · Exact areaEdit location

2024 published service data · 25 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Jose Carlos Martinez, MD, PHD

Hematology (CMS) · Chapel Hill, NC

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
100%Service-mix similarityView profile →

Mark Brandon Goodman, MD

Psychiatry (CMS) · Chapel Hill, NC

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
62%Service-mix similarityView profile →

Ann Marie Kumfer, M.D.

Hospitalist (CMS) · Chapel Hill, NC

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
53%Service-mix similarityView profile →

Daniel Webb Markwalter

Emergency Medicine · Hospice/Palliative Care (CMS) · Chapel Hill, NC

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
36%Service-mix similarityView profile →

Craig Reed, MD

Gastroenterology (CMS) · Chapel Hill, NC

Shared published services
1 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
28%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.