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Compare the published Medicare service mix of John Williams, D.O. with clinicians in the same registry specialty: Anesthesiology.

DES MOINES, IA · Exact areaEdit location

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

Clinton Thomas Rozycki, M.D.

Anesthesiology · Des Moines, IA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for procedure for total knee joint replacement (01402)
100%Service-mix similarityView profile →

Jarrod Karlin Bang, MD

Anesthesiology · Des Moines, IA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for procedure for total knee joint replacement (01402)
99%Service-mix similarityView profile →

Scott D Miller, DO

Anesthesiology · Des Moines, IA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for procedure for total knee joint replacement (01402)
85%Service-mix similarityView profile →

Gavin Gehret Meredith, DO

Anesthesiology · Des Moines, IA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for procedure for total knee joint replacement (01402)
82%Service-mix similarityView profile →

Brett Alan Myers, M.D.

Anesthesiology · Des Moines, IA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for procedure for total knee joint replacement (01402)
81%Service-mix similarityView profile →

Sung Kim, M.D.

Anesthesiology · Des Moines, IA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for procedure for total knee joint replacement (01402)
81%Service-mix similarityView profile →

Haiying Liu, MD

Anesthesiology · Des Moines, IA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for procedure for total knee joint replacement (01402)
75%Service-mix similarityView profile →

Tyler Foster, D.O.

Anesthesiology · Des Moines, IA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for procedure for total knee joint replacement (01402)
73%Service-mix similarityView profile →

Blaine M Schlawin, DO

Anesthesiology · Des Moines, IA

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)
72%Service-mix similarityView profile →

Nicholas Steven Ameln, M.D.

Anesthesiology · Des Moines, IA

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)
72%Service-mix similarityView profile →

David Duane Herbst, DO

Anesthesiology · Des Moines, IA

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for procedure for total knee joint replacement (01402)
65%Service-mix similarityView profile →

Amanda Kaye Tolliver, M.D.

Anesthesiology · Des Moines, IA

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)
62%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.