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Compare the published Medicare service mix of Ryan Keith Barton, M.D. with clinicians in the same registry specialty: Anesthesiology.

TUCSON, AZ · Exact areaEdit location

2024 published service data · 156 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Michelle Jaye Herman, MD

Anesthesiology · Tucson, AZ

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Anesthesia for other procedure on lower leg, ankle, and foot bones (01480)
43%Service-mix similarityView profile →

Steven E Behr, M.D.

Anesthesiology · Tucson, AZ

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
  • Anesthesia for other procedure on top of arm bone and shoulder joint (01630)
  • Anesthesia for other procedure on lower leg, ankle, and foot bones (01480)
42%Service-mix similarityView profile →

Neesann Marietta, MD

Anesthesiology · Tucson, AZ

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Anesthesia for other procedure on lower leg, ankle, and foot bones (01480)
38%Service-mix similarityView profile →

Vincent Mark Kresha, MD

Anesthesiology · Tucson, AZ

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Anesthesia for other procedure on lower leg, ankle, and foot bones (01480)
37%Service-mix similarityView profile →

Derek Alden Merrill, M.D.

Anesthesiology · Tucson, AZ

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for other procedure on top of arm bone and shoulder joint (01630)
37%Service-mix similarityView profile →

Derek Frazier, MD

Anesthesiology · Tucson, AZ

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Anesthesia for other procedure on lower leg, ankle, and foot bones (01480)
34%Service-mix similarityView profile →

Holly Jeanne Graham, M.D.

Anesthesiology · Tucson, AZ

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for other procedure on urinary system through urethra (00910)
  • Anesthesia for fragmenting, manipulation and/or removal of kidney stone including use of an endoscope (00918)
34%Service-mix similarityView profile →

Brent Bushman, MD

Anesthesiology · Tucson, AZ

Shared published services
2 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
34%Service-mix similarityView profile →

Ghada Isaac, M.D.

Anesthesiology · Tucson, AZ

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Anesthesia for other procedure on lower leg, ankle, and foot bones (01480)
32%Service-mix similarityView profile →

William Ryan Foster, MD

Anesthesiology · Tucson, AZ

Shared published services
2 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
32%Service-mix similarityView profile →

Brent Toland, M.D.

Anesthesiology · Tucson, AZ

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for other procedure on urinary system through urethra (00910)
  • Anesthesia for other procedure on lower leg, ankle, and foot bones (01480)
30%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.