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Compare the published Medicare service mix of Karen Nielsen with clinicians in the same registry specialty: Anesthesiology.

DURHAM, NC · Exact areaEdit location

2024 published service data · 111 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

M Stephen Melton, MD

Anesthesiology · Durham, NC

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for lens surgery (00142)
  • Anesthesia for other procedure on skin of arms, legs, and front body (00400)
  • Anesthesia for procedure on nerves, muscles, tendons, fascia, and bursae of shoulder and underarm (01610)
67%Service-mix similarityView profile →

Stephen Klein, M.D.

Anesthesiology · Durham, NC

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for lens surgery (00142)
  • Anesthesia for other procedure on skin of arms, legs, and front body (00400)
  • Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand (01810)
53%Service-mix similarityView profile →

Jennifer Dominguez, M.D.

Anesthesiology · Durham, NC

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for lens surgery (00142)
  • Anesthesia for other procedure on eye (00140)
47%Service-mix similarityView profile →

Andrea Goodrich Udani, M.D.

Anesthesiology · Durham, NC

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for lens surgery (00142)
  • Anesthesia for other procedure on eye (00140)
41%Service-mix similarityView profile →

Juhnnel Omar Vera Santiago, MD

Anesthesiology · Durham, NC

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for lens surgery (00142)
  • Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand (01810)
  • Anesthesia for other procedure on eye (00140)
40%Service-mix similarityView profile →

Abigail Melnick, M.D.

Anesthesiology · Durham, NC

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for lens surgery (00142)
  • Anesthesia for other procedure on eye (00140)
38%Service-mix similarityView profile →

Emily Chen

Anesthesiology · Durham, NC

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for lens surgery (00142)
  • Anesthesia for other procedure on skin of arms, legs, and front body (00400)
  • Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand (01810)
37%Service-mix similarityView profile →

John Eck, M.D.

Anesthesiology · Durham, NC

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for lens surgery (00142)
  • Anesthesia for other procedure on eye (00140)
37%Service-mix similarityView profile →

Zaneta Y Strouch, MD

Anesthesiology · Durham, NC

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for lens surgery (00142)
  • Anesthesia for other procedure on skin of arms, legs, and front body (00400)
  • Anesthesia for other procedure on eye (00140)
36%Service-mix similarityView profile →

Alison Flanagan Brown, M.D.

Anesthesiology · Durham, NC

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for lens surgery (00142)
  • Anesthesia for other procedure on eye (00140)
36%Service-mix similarityView profile →

Eugene Eunsuk Lee, M.D.

Anesthesiology · Durham, NC

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for lens surgery (00142)
  • Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand (01810)
  • Anesthesia for other procedure on lower leg, ankle, and foot bones (01480)
34%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.