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Similar work.
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Compare the published Medicare service mix of Keith Daniel Gray, M.D. with clinicians in the same registry specialty: Anesthesiology.

REDDING, CA · Exact areaEdit location

2024 published service data · 16 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Jonathan Kombrinck, MD

Anesthesiology · Redding, CA

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 other procedure on lower abdomen (00840)
  • Anesthesia for other procedure on urinary system through urethra (00910)
60%Service-mix similarityView profile →

Rameshkumar Raju Kakarlapudi, M.D

Anesthesiology · Redding, CA

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 other procedure on lower abdomen (00840)
  • Anesthesia for procedure for total knee joint replacement (01402)
48%Service-mix similarityView profile →

Basavaraj Nagappala, MD

Anesthesiology · Redding, CA

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 x-ray or radiation therapy (01922)
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
47%Service-mix similarityView profile →

Ravikumar Tripuraneni, MD

Anesthesiology · Redding, CA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on lower abdomen (00840)
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Anesthesia for other procedure on upper abdomen (00790)
37%Service-mix similarityView profile →

Pavan K Davuluri, MD

Anesthesiology · Redding, CA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on lower abdomen (00840)
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Anesthesia for other procedure on upper abdomen (00790)
35%Service-mix similarityView profile →

Andrew Mcfadden, D.O.

Anesthesiology · Redding, CA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on lower abdomen (00840)
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Anesthesia for other procedure on upper abdomen (00790)
34%Service-mix similarityView profile →

Mario German Alvarado, D.O.

Anesthesiology · Redding, CA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on lower abdomen (00840)
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Anesthesia for other procedure on upper abdomen (00790)
31%Service-mix similarityView profile →

Ramon Villezar Deleon, MD

Anesthesiology · Redding, CA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on lower abdomen (00840)
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Anesthesia for other procedure on upper abdomen (00790)
30%Service-mix similarityView profile →

David Robert Sydow, MD

Anesthesiology · Redding, CA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on lower abdomen (00840)
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
27%Service-mix similarityView profile →

John Craig Stewart, MD

Anesthesiology · Redding, CA

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
26%Service-mix similarityView profile →

Carl J Koutnik, MD

Anesthesiology · Redding, CA

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
26%Service-mix similarityView profile →

Daniel Fox, M.D.

Anesthesiology · Redding, CA

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for other procedure on lower abdomen (00840)
  • Anesthesia for procedure for total knee joint replacement (01402)
26%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.