Quick answers
- Which hospitals does Allyson Roser work at?
- Medicare's official clinician data lists Allyson Roser at 4 hospitals: SSM Health Saint Louis University Hospital, SSM Health St Mary's Hospital - St Louis, SSM St Clare Health Center and St Lukes Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Allyson Roser see patients?
- Medicare's clinician data lists 5 practice locations, including Saint Louis, MO and Fenton, MO. Call before your visit to confirm the address.
- What is Allyson Roser's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Allyson Roser accept Medicare assignment?
- Yes. Medicare's clinician data says Allyson Roser 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 Allyson Roser?
- (608) 280-4647, as listed in official Medicare / NPI Registry data.
- What is Allyson Roser's NPI number?
- 1639678451. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Allyson Roser works
Medicare's Facility Affiliation Data lists Allyson Roser at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- SSM Health Saint Louis University HospitalSaint Louis, MO · Acute Care Hospital · CCN 260105
- SSM Health St Mary's Hospital - St LouisSaint Louis, MO · Acute Care Hospital · CCN 260091
- SSM St Clare Health CenterFenton, MO · Acute Care Hospital · CCN 260081
- St Lukes HospitalChesterfield, MO · Acute Care Hospital · CCN 260179
Practice locations
Addresses where Allyson Roser is enrolled with Medicare (CMS data updated 2026-10-02).
- 10101 Woodfield LnSaint Louis, MO 63132 (608) 280‑4647
- 1011 Bowles AveFenton, MO 63026
- 1031 Bellevue Ave, Suite 280aSaint Louis, MO 63117 (314) 977‑7455
- 1201 S Grand BlvdSaint Louis, MO 63104 (314) 617‑2000
- 1225 S Grand BlvdSaint Louis, MO 63104
Group practices
Medicare enrollment lists Allyson Roser as a member of this group (CMS data updated 2026-10-02).
- SSM Health Care Group940 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2017 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1639678451 |
| 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 2026-10-02, retrieved 2026-10-29
- 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