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Compare the published Medicare service mix of Stephen Patrick Simpson, PA with clinicians in the same registry specialty: Physician Assistant.

SAINT LOUIS, MO · Exact areaEdit location

2024 published service data · 264 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Olivia Rhea Ulett, PA

Physician Assistant · Saint Louis, MO

Shared published services
3 shared services · view billing descriptions
  • Insertion of needle into vein (3 years or older) (36410)
  • Insertion of tube for infusion (5 years or older) (36569)
  • Critical care, first 30-74 minutes (99291)
93%Service-mix similarityView profile →

Margaret Isabella Neff, PA-C

Physician Assistant · Saint Louis, MO

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
49%Service-mix similarityView profile →

Christopher Jackson Butler, PA

Physician Assistant · Saint Louis, MO

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
45%Service-mix similarityView profile →

Ilya Bunimovich, PA

Physician Assistant · Saint Louis, MO

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
45%Service-mix similarityView profile →

Paige Nicole Cardoza, PA

Physician Assistant · Saint Louis, MO

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
45%Service-mix similarityView profile →

Kelley Degreeff Stauffer, PA

Physician Assistant · Saint Louis, MO

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
43%Service-mix similarityView profile →

Catherine Deterding

Physician Assistant · Saint Louis, MO

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
43%Service-mix similarityView profile →

Margaret Cecilia Youngs, PA

Physician Assistant · Saint Louis, MO

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
41%Service-mix similarityView profile →

Reed Frederick Welch, PA

Physician Assistant · Saint Louis, MO

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
41%Service-mix similarityView profile →

Jeffrey Mark Schulte, PA

Physician Assistant · Saint Louis, MO

Shared published services
2 shared services · view billing descriptions
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)
41%Service-mix similarityView profile →

Jordan Allensworth, PA

Physician Assistant · Saint Louis, MO

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
41%Service-mix similarityView profile →

Nicholas Arthur Klimeck-Jones, PA

Physician Assistant · Saint Louis, MO

Shared published services
2 shared services · view billing descriptions
  • Critical care, first 30-74 minutes (99291)
  • Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes (99233)
41%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.