Mary Ellen Ernst, CRNA

Primary specialty

Certified Registered Nurse AnesthetistTaxonomy code 367500000X

License

2010020077 Issued in MO

Practice address

2 Progress Point Pkwy
Dept Anesthesiology
O Fallon, MO 63368-2205

Phone

(800) 862-9980

Fax

(314) 362-1185

NPI assigned

Jun 26, 2010

Sex

Female

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Other identifiers 1

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in MO

Enrollment records 1

Specialty

Certified Registered Nurse Anesthetist (Crna)

Education

Other, 2010

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Orthomed Staffing LLCGroup PAC ID 9638429178, 373 clinicians

Western Anesthesiology Associates IncGroup PAC ID 6204720667, 251 clinicians

Practice addresses (Care Compare)

Merit-based Incentive Payment System (MIPS)

Final score

84.2 of 100Reported as group

Quality

71.6

Promoting interoperability

100

Improvement activities

40

Cost

75.75

Medicare enrollment (NPD)

Enrolled

Credentials

Certified Registered Nurse

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Orthomed Staffing LLC

  • Anesthesiology Physician
  • Addison, TX
  • NPI 1225514276

  MO

  Medicare reassignment Care Compare group NPD
• Western Anesthesiology Associates, Inc.

  • Anesthesiology Physician
  • Saint Louis, MO
  • NPI 1275646754
  Medicare reassignment Care Compare group
• Midwest Anesthesia Providers S.C

  • Anesthesiology Physician
  • Saint Louis, MO
  • NPI 1295189082

  Nurse Anesthetist, Certified Registered

  Medicare reassignment NPD
• Washington University

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1528005642
  Medicare reassignment NPD
• Washington University

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1962442475
  NPD

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1277510400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1744848000000",
    "number": "1477864213",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 7412011",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606742011",
            "telephone_number": "800-862-9980",
            "fax_number": "314-362-1185"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "2 PROGRESS POINT PKWY",
            "address_2": "DEPT ANESTHESIOLOGY",
            "city": "O FALLON",
            "state": "MO",
            "postal_code": "633682205",
            "telephone_number": "800-862-9980",
            "fax_number": "314-362-1185"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ERNST",
        "first_name": "MARY",
        "middle_name": "ELLEN",
        "name_prefix": "Ms.",
        "credential": "CRNA",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2010-06-26",
        "last_updated": "2025-04-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "MO",
            "license": "2010020077",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "914200001",
            "state": "MO"
        }
    ],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy.et0965.epichosted.com/FHIRProxy/api/FHIR/DSTU2/",
            "affiliation": "Y",
            "affiliationName": "Washington University",
            "address_1": "2 Progress Point Pkwy",
            "address_2": "Dept Anesthesiology",
            "city": "O Fallon",
            "state": "MO",
            "country_code": "US",
            "postal_code": "633682205",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Enlightened Home Care Llc81
• Carla Jean Enyart
• Fatima Aybike Erdemir, RDN
• Rachel Erdmann
• Eric Hurtte D.M.D, P.C.
• Heather Kirkman Escobar, D.C.
• Ryan N Espenschied, MA, LPC
• Emma Rose Eubanks, MD
• Delaina Evans, FNP-BC
• Katherine Wren Evans, M.A., CCC-SLP

• Certified Registered Nurse Anesthetist in O Fallon, MO
• Providers in O Fallon, MO by specialty
• Certified Registered Nurse Anesthetist in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 17, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.