Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Mary Ellen Frantz, CRNA

Individual provider Certified Registered Nurse Anesthetist · NPI 1033229190

Mary Ellen Frantz, CRNA is registered under Certified Registered Nurse Anesthetist (CRNA) in Chesterfield, Missouri. Qualified in 1976, 50 years ago. Practices with Gateway Gastroenterology Inc, a 25-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
50
Licensed in
MO
In the registry since
2006
What do these letters mean?
CRNA — Certified Registered Nurse Anesthetist
An advanced practice nurse who administers anaesthesia.

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Practice location Address checks out

17050 Baxter Rd Ste #110
Chesterfield, MO 63005-1422
Phone: (636) 200-4242
Fax: (636) 200-4243
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Certified Registered Nurse Anesthetist (primary) Taxonomy 367500000X · Licence 122106 (MO)

Record details

NPI number1033229190
Entity typeIndividual (Type 1)
GenderFemale
Credentials CRNA
Sole proprietorNo
NPI enumeratedAugust 30, 2006
Last updated in NPPESJuly 1, 2026
Certification dateJuly 1, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCERTIFIED REGISTERED NURSE ANESTHETIST (CRNA)
Medical schoolOTHER
Graduated 1976 (50 years in practice)
Group practice Gateway Gastroenterology Inc — 25 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients12
Services billed 12 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Mercy Hospital Washington Hospital · Washington, MO

Colleagues at Gateway Gastroenterology Inc

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 25 clinicians in the practice; 12 are shown here.

Other providers in Chesterfield