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Compare the published Medicare service mix of Brendan Patrick Keen, M.D. with clinicians in the same registry specialty: Anesthesiology.

GREENWOOD VILLAGE, CO · Exact areaEdit location

2024 published service data · 101 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

David S Pennington, MD

Anesthesiology · Greenwood Village, CO

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand (01810)
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
  • Injection of anesthetic agent and/or steroid into other nerve or branch (64450)
74%Service-mix similarityView profile →

Christopher James Strouse, M.D.

Anesthesiology · Greenwood Village, CO

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand (01810)
  • 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)
67%Service-mix similarityView profile →

Matthew Ryan Gayed

Anesthesiology · Greenwood Village, CO

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand (01810)
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
  • Anesthesia for other procedure on forearm, wrist, or hand bones (01830)
57%Service-mix similarityView profile →

Elizabeth Gauthier, D.O.

Anesthesiology · Greenwood Village, CO

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)
45%Service-mix similarityView profile →

Ryen Fons, MD

Anesthesiology · Greenwood Village, CO

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 or exam of knee joint using an endoscope (01400)
  • Ultrasonic guidance for needle placement (76942)
34%Service-mix similarityView profile →

Thomas J Keyes, MD

Anesthesiology · Greenwood Village, CO

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
  • Ultrasonic guidance for needle placement (76942)
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
34%Service-mix similarityView profile →

Kevin P Bauer, M.D.

Anesthesiology · Greenwood Village, CO

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand (01810)
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
  • Ultrasonic guidance for needle placement (76942)
33%Service-mix similarityView profile →

Jasmine Kaur Bajwa, DO

Anesthesiology · Greenwood Village, CO

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand (01810)
  • 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)
29%Service-mix similarityView profile →

Aly D Branstiter, MD

Anesthesiology · Greenwood Village, CO

Shared published services
3 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
  • Ultrasonic guidance for needle placement (76942)
  • Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) (64447)
27%Service-mix similarityView profile →

Eric A Kalhoefer, MD

Anesthesiology · Greenwood Village, CO

Shared published services
2 shared services · view billing descriptions
  • Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand (01810)
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
25%Service-mix similarityView profile →

Nathan Douglas Applegren, M.D.

Anesthesiology · Greenwood Village, CO

Shared published services
2 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
  • Ultrasonic guidance for needle placement (76942)
24%Service-mix similarityView profile →

Kirk Dressen, MD

Anesthesiology · Greenwood Village, CO

Shared published services
1 shared services · view billing descriptions
  • Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) (64415)
23%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.