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Compare the published Medicare service mix of Nathan A Carden, DO with clinicians in the same registry specialty: Anesthesiology.

PORTLAND, OR · Exact areaEdit location

2024 published service data · 228 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Suzanne Y Pak, MD

Anesthesiology · Portland, OR

Shared published services
3 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)
  • Anesthesia for total hip replacement (01214)
73%Service-mix similarityView profile →

Murali Karuppana Pillai, MD

Anesthesiology · Portland, OR

Shared published services
3 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)
  • Anesthesia for total hip replacement (01214)
72%Service-mix similarityView profile →

Patricia N Pancoast, MD

Anesthesiology · Portland, OR

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)
70%Service-mix similarityView profile →

Peter M Roessler, MD

Anesthesiology · Portland, OR

Shared published services
3 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)
  • Anesthesia for total hip replacement (01214)
67%Service-mix similarityView profile →

Bryan James Putnam, DO

Anesthesiology · Portland, OR

Shared published services
3 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)
  • Anesthesia for total hip replacement (01214)
66%Service-mix similarityView profile →

Mark D. Calkins, MD

Anesthesiology · Portland, OR

Shared published services
3 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)
  • Anesthesia for total hip replacement (01214)
64%Service-mix similarityView profile →

Omar Halawa, M.D.

Anesthesiology · Portland, OR

Shared published services
3 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)
  • Anesthesia for total hip replacement (01214)
62%Service-mix similarityView profile →

Neesa Patel

Anesthesiology · Portland, OR

Shared published services
3 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)
  • Anesthesia for total hip replacement (01214)
59%Service-mix similarityView profile →

Steven J Mattison, MD

Anesthesiology · Portland, OR

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)
59%Service-mix similarityView profile →

Mark A Norling, MD

Anesthesiology · Portland, OR

Shared published services
3 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)
  • Anesthesia for total hip replacement (01214)
56%Service-mix similarityView profile →

Jordan Blake Johnson, M.D.

Anesthesiology · Portland, OR

Shared published services
3 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)
  • Anesthesia for exam of colon using an endoscope (00812)
55%Service-mix similarityView profile →

Jeff Chen, MD

Anesthesiology · Portland, OR

Shared published services
3 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)
  • Anesthesia for total hip replacement (01214)
53%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.