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Compare the published Medicare service mix of Christopher Campbell Gratian, MD with clinicians in the same registry specialty: Anesthesiology.

CHAPEL HILL, NC · Exact areaEdit location

2024 published service data · 81 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Jacob Peter Shaffer, MD

Anesthesiology · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Injection of anesthetic agent and/or steroid into other nerve or branch (64450)
75%Service-mix similarityView profile →

Benjamin Joseph Judd, MD

Anesthesiology · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
71%Service-mix similarityView profile →

Elsje Harker, MD

Anesthesiology · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
62%Service-mix similarityView profile →

Benjamin Francis Redmon, M.D.

Anesthesiology · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
59%Service-mix similarityView profile →

Warren R Miller, M.D.

Anesthesiology · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
49%Service-mix similarityView profile →

William Michael Hart, M.D.

Anesthesiology · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
48%Service-mix similarityView profile →

Nathan Paul Painter, M.D.

Anesthesiology · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand (01810)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
47%Service-mix similarityView profile →

Benjamin L Antonio, DO

Anesthesiology · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
47%Service-mix similarityView profile →

Timothy Erpelding, M.D.

Anesthesiology · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Anesthesia for total hip replacement (01214)
46%Service-mix similarityView profile →

Christopher Jordan Hancock, MD

Anesthesiology · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for extensive surgery on spine (00670)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
45%Service-mix similarityView profile →

Ahmed Mahmoud Farawi

Anesthesiology · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
44%Service-mix similarityView profile →

Jennifer Dickerson Allan, MD

Anesthesiology · Chapel Hill, NC

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for total hip replacement (01214)
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
44%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.