Quick answers
- Where does Mary E. Ernst see patients?
- Medicare's clinician data lists 4 practice locations, including Frontenac, MO, Saint Louis, MO and Washington, MO. Call before your visit to confirm the address.
- What is Mary E. Ernst's specialty?
- Medicare lists Certified Registered Nurse Anesthetist (CRNA) as the primary specialty.
- Does Mary E. Ernst accept Medicare assignment?
- Yes. Medicare's clinician data says Mary E. Ernst accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Mary E. Ernst?
- (469) 863-9978, as listed in official Medicare / NPI Registry data.
- What is Mary E. Ernst's NPI number?
- 1477864213. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Mary E. Ernst is enrolled with Medicare (CMS data updated 2026-10-02).
- 10435 Clayton Rd, Suite 110Frontenac, MO 63131 (469) 863‑9978
- 4594 S Lindbergh Blvd, Orthomed StaffingSaint Louis, MO 63127 (469) 863‑9978
- 615 S New Ballas RdSaint Louis, MO 63141 (314) 251‑4687
- 901 E 5th St, Deptartment of AnesthesiologyWashington, MO 63090 (636) 239‑4100
Group practices
Medicare enrollment lists Mary E. Ernst as a member of these groups (CMS data updated 2026-10-02).
- Orthomed Staffing LLC416 clinicians in the group
- Western Anesthesiology Associates Inc256 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Missouri →
Other nurse anesthetists in Frontenac
Clinicians with the same Medicare primary specialty in Frontenac, MO — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 2010 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1477864213 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians