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Compare the published Medicare service mix of Heidi Underwood, CRNA with clinicians in the same registry specialty: Certified Registered Nurse Anesthetist (Crna) (CMS).

SIOUX FALLS, SD · Exact areaEdit location

2024 published service data · 158 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Jennifer Callahan, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Sioux Falls, SD

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand (01810)
49%Service-mix similarityView profile →

Leah Rhodes

Certified Registered Nurse Anesthetist (Crna) (CMS) · Sioux Falls, SD

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand (01810)
41%Service-mix similarityView profile →

Katherine Robinson

Certified Registered Nurse Anesthetist (Crna) (CMS) · Sioux Falls, SD

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand (01810)
38%Service-mix similarityView profile →

Daniel Lewison, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Sioux Falls, SD

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand (01810)
36%Service-mix similarityView profile →

David R. Hemmer, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Sioux Falls, SD

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

Scott M Ball, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Sioux Falls, SD

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

Brady Foxhoven

Certified Registered Nurse Anesthetist (Crna) (CMS) · Sioux Falls, SD

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand (01810)
34%Service-mix similarityView profile →

Barry W Powell, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Sioux Falls, SD

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand (01810)
33%Service-mix similarityView profile →

Ransom Jones, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Sioux Falls, SD

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand (01810)
31%Service-mix similarityView profile →

Tara L Popkes, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Sioux Falls, SD

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for procedure on nerves, muscles, tendons, and tissue of forearm, wrist, and hand (01810)
30%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.