Allyson Leigh Roser, PA
NPI 1639678451ActiveIndividual· Physician Assistant· Belleville, IL
Physician Assistant (PA) with Ssm Health Care Group, practicing in Belleville, Illinois. 133 Medicare patients in 2024, $11,984 paid; all of their 423 Part D prescriptions were generic. Acumed LLC was the largest of 2 companies reporting payments in 2025, $2,438 in all, mostly education. Lists Ssm Health Saint Louis University Hospital and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1639678451 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA |
| Sole proprietor | No |
| NPI issued | Feb 7, 2018 |
| Last updated in NPPES | Apr 7, 2021 |
| Certified by provider | Apr 7, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 085.006541 | IL |
| Physician Assistant, Medical | 363AM0700X | 1150728 | MA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Physician Assistant (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 133 |
|---|---|
| Services billed | 484 across 8 procedure codes |
| Paid by Medicare | $11,984 |
Part D prescriptions in 2024
| Prescriptions (claims) | 423 · 450 30-day fills |
|---|---|
| Patients | 134 |
| Total drug cost | $8,461 |
| Generic share | 100% of claims |
Education and affiliations
| Graduation year | 2017 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Ssm Health Care GroupSaint Louis, MO · 940 clinicians
Hospital affiliations
- Ssm Health Saint Louis University HospitalSaint Louis, MO
- Ssm Health St Mary's Hospital - St LouisSaint Louis, MO
- Ssm St Clare Health CenterFenton, MO
- St Lukes HospitalChesterfield, MO
Other facilities
- Ssm Health Rehabilitation HospitalInpatient rehabilitation facility · Richmond Heights, MO
Industry payments (Open Payments)
- 2025$2,438 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Acumed LLC | $2,357 | 1 |
| Medical Device Business Services, Inc. | $80.84 | 1 |
What the 2025 payments were for
- Education$2,357 · 1 payment
- Food and Beverage$80.84 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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