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

MS. Mary Ellen Ernst, CRNA

Individual provider Certified Registered Nurse Anesthetist · NPI 1477864213

MS. Mary Ellen Ernst, CRNA is a Certified Registered Nurse Anesthetist (CRNA) in O Fallon, Missouri. Qualified in 2010, 16 years ago. Practices with Orthomed Staffing LLC, a 373-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
16
Licensed in
MO
In the registry since
2010
What do these letters mean?
CRNA — Certified Registered Nurse Anesthetist
An advanced practice nurse who administers anaesthesia.

See every abbreviation used in this directory →

Practice location Address checks out

2 Progress Point Pkwy Dept Anesthesiology
O Fallon, MO 63368-2205
Phone: (800) 862-9980
Fax: (314) 362-1185
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Certified Registered Nurse Anesthetist (primary) Taxonomy 367500000X · Licence 2010020077 (MO)

Record details

NPI number1477864213
Entity typeIndividual (Type 1)
GenderFemale
Credentials CRNA
Sole proprietorNo
NPI enumeratedJune 26, 2010
Last updated in NPPESApril 17, 2025

Medicare enrollment

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

Medicare specialtyCERTIFIED REGISTERED NURSE ANESTHETIST (CRNA)
Medical schoolOTHER
Graduated 2010 (16 years in practice)
Group practice Orthomed Staffing Llc — 373 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations3 on file with Medicare

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