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Compare the published Medicare service mix of Kayla R O'toole, MD with clinicians in the same registry specialty: Anesthesiology.

SAINT LOUIS, MO · Exact areaEdit location

2024 published service data · 233 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Christian L Hodach, D.O.

Anesthesiology · Saint Louis, MO

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 total hip replacement (01214)
68%Service-mix similarityView profile →

Jonathan Sadler

Anesthesiology · Saint Louis, MO

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 open or endoscopic total shoulder joint replacement (01638)
53%Service-mix similarityView profile →

Katie Sueyuane Yang, MD

Anesthesiology · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Anesthesia for total hip replacement (01214)
  • Anesthesia for lens surgery (00142)
44%Service-mix similarityView profile →

Rebecca Ann Appelgren, MD

Anesthesiology · Saint Louis, MO

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 total hip replacement (01214)
42%Service-mix similarityView profile →

Jared Michael Engles, D.O.

Anesthesiology · Saint Louis, MO

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 procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand (01810)
42%Service-mix similarityView profile →

Alvin R. Manalaysay, M.D.

Anesthesiology · Saint Louis, MO

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for procedure for total knee joint replacement (01402)
40%Service-mix similarityView profile →

Dima El Halawani Aladdin, MD

Anesthesiology · Saint Louis, MO

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Anesthesia for lens surgery (00142)
36%Service-mix similarityView profile →

Colby Lyle Parks, MD

Anesthesiology · Saint Louis, MO

Shared published services
2 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)
36%Service-mix similarityView profile →

Desha C Wear, MD

Anesthesiology · Saint Louis, MO

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand (01810)
  • Anesthesia for lens surgery (00142)
35%Service-mix similarityView profile →

Richard Austin Sargent, MD

Anesthesiology · Saint Louis, MO

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 procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand (01810)
35%Service-mix similarityView profile →

Carlos A Puyo, MD

Anesthesiology · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for procedure for total knee joint replacement (01402)
  • Anesthesia for lens surgery (00142)
  • Anesthesia for other procedure on top of arm bone and shoulder joint (01630)
34%Service-mix similarityView profile →

Christopher W Hamlin, MD

Anesthesiology · Saint Louis, MO

Shared published services
1 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
34%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.