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Similar work.
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Compare the published Medicare service mix of Neil M Warren with clinicians in the same registry specialty: Certified Registered Nurse Anesthetist (Crna) (CMS).

DURHAM, NC · Exact areaEdit location

2024 published service data · 107 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Keri Konstant Hussey, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Durham, NC

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for lens surgery (00142)
  • Anesthesia for procedure for total knee joint replacement (01402)
73%Service-mix similarityView profile →

Tyler Henderson Knowles, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Durham, NC

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for lens surgery (00142)
  • Anesthesia for procedure for total knee joint replacement (01402)
72%Service-mix similarityView profile →

Julie Fritz, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Durham, NC

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Anesthesia for total hip replacement (01214)
72%Service-mix similarityView profile →

Kipp Andrews, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Durham, NC

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Anesthesia for total hip replacement (01214)
72%Service-mix similarityView profile →

Joshua Donavon Hiser, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Durham, NC

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for lens surgery (00142)
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Anesthesia for total hip replacement (01214)
70%Service-mix similarityView profile →

Sarah E Queen, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Durham, NC

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for lens surgery (00142)
69%Service-mix similarityView profile →

Kacy R Jenkins, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Durham, NC

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for lens surgery (00142)
69%Service-mix similarityView profile →

Tammy R Schaeffer, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Durham, NC

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for lens surgery (00142)
69%Service-mix similarityView profile →

Debra S Clements

Certified Registered Nurse Anesthetist (Crna) (CMS) · Durham, NC

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for lens surgery (00142)
69%Service-mix similarityView profile →

Tirzah Jasiel Johnson, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Durham, NC

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for lens surgery (00142)
69%Service-mix similarityView profile →

Natasha Nadine Cassara

Certified Registered Nurse Anesthetist (Crna) (CMS) · Durham, NC

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for lens surgery (00142)
69%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.