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

HOUSTON, TX · Exact areaEdit location

2024 published service data · 500 eligible profiles compared. This search reached its 500-profile comparison limit, using NPI order. Narrow the location for a more focused comparison. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

Ralph Harry Hunter, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Houston, TX

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for placement or revision of blood flow shunt (01844)
73%Service-mix similarityView profile →

Eunice Martinez

Certified Registered Nurse Anesthetist (Crna) (CMS) · Houston, TX

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for placement or revision of blood flow shunt (01844)
73%Service-mix similarityView profile →

Ajit Varkey, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Houston, TX

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for placement or revision of blood flow shunt (01844)
68%Service-mix similarityView profile →

Teena Malayil Thomas, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Houston, TX

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for placement or revision of blood flow shunt (01844)
63%Service-mix similarityView profile →

Renea Beatrice Joswiak, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Houston, TX

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for placement or revision of blood flow shunt (01844)
54%Service-mix similarityView profile →

Shane Matthew Hulbert, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Houston, TX

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for placement or revision of blood flow shunt (01844)
53%Service-mix similarityView profile →

Dennis Perez

Certified Registered Nurse Anesthetist (Crna) (CMS) · Houston, TX

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for placement or revision of blood flow shunt (01844)
52%Service-mix similarityView profile →

Marty Angelo Buzon Espina, DNAP, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Houston, TX

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for placement or revision of blood flow shunt (01844)
48%Service-mix similarityView profile →

Jennifer Watson Kopp, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Houston, TX

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for placement or revision of blood flow shunt (01844)
47%Service-mix similarityView profile →

Tyler Corder

Certified Registered Nurse Anesthetist (Crna) (CMS) · Houston, TX

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for placement or revision of blood flow shunt (01844)
47%Service-mix similarityView profile →

Adriana Gonzalez Wong, DNP

Certified Registered Nurse Anesthetist (Crna) (CMS) · Houston, TX

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for placement or revision of blood flow shunt (01844)
45%Service-mix similarityView profile →

David Profit, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Houston, TX

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for placement or revision of blood flow shunt (01844)
37%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.