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

PHILADELPHIA, PA · Exact areaEdit location

2024 published service data · 387 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Paul G. Vandervoort, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for exam of colon using an endoscope (00812)
92%Service-mix similarityView profile →

Linda Marie Mccoy-Davis, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for exam of colon using an endoscope (00812)
92%Service-mix similarityView profile →

Richard P Flanagan, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for exam of colon using an endoscope (00812)
92%Service-mix similarityView profile →

Allison Sweeney

Certified Registered Nurse Anesthetist (Crna) (CMS) · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for exam of colon using an endoscope (00812)
85%Service-mix similarityView profile →

Anne James Anithottam, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for exam of colon using an endoscope (00812)
85%Service-mix similarityView profile →

Nicholas Atherton Williams, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for exam of colon using an endoscope (00812)
84%Service-mix similarityView profile →

Barbara Lynn Dlugosz, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for exam of colon using an endoscope (00812)
84%Service-mix similarityView profile →

John Mark Negro

Certified Registered Nurse Anesthetist (Crna) (CMS) · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for exam of colon using an endoscope (00812)
84%Service-mix similarityView profile →

Alexis Gonzales, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for exam of colon using an endoscope (00812)
84%Service-mix similarityView profile →

Sophia Monica Wynter-Evans, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for exam of colon using an endoscope (00812)
84%Service-mix similarityView profile →

Christina Burgess

Certified Registered Nurse Anesthetist (Crna) (CMS) · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for exam of colon using an endoscope (00812)
84%Service-mix similarityView profile →

Cynthia Hunt, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Philadelphia, PA

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for other procedure on large bowel using an endoscope (00811)
  • Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)
  • Anesthesia for exam of colon using an endoscope (00812)
84%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.