Quick answers
- Does Anna Ahrens accept Medicare assignment?
- Yes. Medicare's clinician data says Anna Ahrens accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Anna Ahrens's NPI number?
- 1457480915. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Anna Ahrens works
Medicare's Facility Affiliation Data lists Anna Ahrens at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Missouri Baptist Medical CenterSaint Louis, MO · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 260108
Practice locations
Addresses where Anna Ahrens is enrolled with Medicare (CMS data updated October 2, 2026).
- 2630 Hwy KO Fallon, MO 63368 (636) 240‑5454
- 3015 N Ballas RdSaint Louis, MO 63131 (314) 747‑2066
- 3015 N Ballas Rd, Missouri Baptist HospitalSt Louis, MO 63131 (314) 996‑5601
- 3023 N Ballas Rd, Suite 200dSaint Louis, MO 63131 (314) 996‑7272
Group practices
Medicare enrollment lists Anna Ahrens as a member of these groups (CMS data updated October 2, 2026).
- Washington University3,029 clinicians in the group
- Physician Groups LC521 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in O Fallon
Clinicians with the same Medicare primary specialty in O Fallon, MO — not a recommendation.
Other clinicians in Washington University
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2004 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1457480915 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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