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

PHOENIX, AZ · Exact areaEdit location

2024 published service data · 154 eligible profiles compared. Similarity describes billing patterns, not quality, outcomes, or suitability for your care.

David W Carter, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Phoenix, AZ

Shared published services
3 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for insertion of permanent heart pacemaker (00530)
  • Anesthesia for procedure to assess heart electrical activity (00537)
85%Service-mix similarityView profile →

Janice Miiller, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Phoenix, AZ

Shared published services
3 shared services · view billing descriptions
  • Anesthesia for procedure to assess heart electrical activity (00537)
  • Anesthesia for x-ray on artery of brain, heart, or chest (01926)
  • Anesthesia for x-ray or radiation therapy (01922)
70%Service-mix similarityView profile →

James Michael Hartley, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Phoenix, AZ

Shared published services
3 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
  • Anesthesia for procedure to assess heart electrical activity (00537)
  • Anesthesia for x-ray or radiation therapy (01922)
43%Service-mix similarityView profile →

Scott Thomas Earl, RN, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Phoenix, AZ

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for procedure to assess heart electrical activity (00537)
43%Service-mix similarityView profile →

Mariam Thomas

Certified Registered Nurse Anesthetist (Crna) (CMS) · Phoenix, AZ

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for procedure to assess heart electrical activity (00537)
43%Service-mix similarityView profile →

Kathleen Simmonds, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Phoenix, AZ

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for x-ray or radiation therapy (01922)
37%Service-mix similarityView profile →

Gregory Currit

Certified Registered Nurse Anesthetist (Crna) (CMS) · Phoenix, AZ

Shared published services
1 shared services · view billing descriptions
  • Insertion of artery tube for blood sampling or infusion through skin (36620)
35%Service-mix similarityView profile →

Nathan Estep

Certified Registered Nurse Anesthetist (Crna) (CMS) · Phoenix, AZ

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for procedure to assess heart electrical activity (00537)
32%Service-mix similarityView profile →

Sean Patrick Ensign, APRN, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Phoenix, AZ

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for x-ray or radiation therapy (01922)
25%Service-mix similarityView profile →

Kyle Schiltz

Certified Registered Nurse Anesthetist (Crna) (CMS) · Phoenix, AZ

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for procedure to assess heart electrical activity (00537)
23%Service-mix similarityView profile →

Annabelle C Porter, CRNA

Certified Registered Nurse Anesthetist (Crna) (CMS) · Phoenix, AZ

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for insertion of permanent heart pacemaker (00530)
22%Service-mix similarityView profile →

James K King

Certified Registered Nurse Anesthetist (Crna) (CMS) · Phoenix, AZ

Shared published services
1 shared services · view billing descriptions
  • Anesthesia for procedure to assess heart electrical activity (00537)
18%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.