A DIFFERENT WAY TO EXPLORE

Similar work.
More providers to explore.

Compare the published Medicare service mix of Robert Anthony Chavez, M.D. with clinicians in the same registry specialty: Anesthesiology.

TEMPE, AZ · Exact areaEdit location

2024 published service data · 44 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Jonathan Scott Kaplan, DO

Anesthesiology · Tempe, AZ

Shared published services
3 shared services · view billing descriptions
  • Injection of substance into lower spine canal (62322)
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Anesthesia for extensive surgery on spine (00670)
80%Service-mix similarityView profile →

Matthew Ploger, D.O.

Anesthesiology · Tempe, AZ

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for extensive surgery on spine (00670)
  • Anesthesia for procedure for total knee joint replacement (01402)
30%Service-mix similarityView profile →

Christopher Johnstad, M.D.

Anesthesiology · Tempe, AZ

Shared published services
2 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
  • Anesthesia for other procedure or exam of knee joint using an endoscope (01400)
28%Service-mix similarityView profile →

Norman Nazareth, M.D.

Anesthesiology · Tempe, AZ

Shared published services
2 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Anesthesia for procedure for total knee joint replacement (01402)
25%Service-mix similarityView profile →

David Michael Medina, M.D.

Anesthesiology · Tempe, AZ

Shared published services
2 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)
24%Service-mix similarityView profile →

James J Peterman, M.D.

Anesthesiology · Tempe, AZ

Shared published services
2 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)
20%Service-mix similarityView profile →

Alexander Josef Catton, M.D.

Anesthesiology · Tempe, AZ

Shared published services
1 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
17%Service-mix similarityView profile →

Scott Leffler, MD

Anesthesiology · Tempe, AZ

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for other procedure on top of arm bone and shoulder joint (01630)
12%Service-mix similarityView profile →

David C Richardson, MD

Anesthesiology · Tempe, AZ

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for other procedure or exam of knee joint using an endoscope (01400)
7%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.