Amanda Marie Ritzer, PA-C
NPI 1437937489ActiveIndividual· Physician Assistant· Portage, MI
Physician Assistant (PA-C) in Portage, Michigan, trained at Western Michigan Un Homer Stryker School of Med (class of 2023). Their prescriptions cost Medicare Part D more than their services did: $29,597 for 385 claims, against $3,518 paid for services in 2024. Genzyme Corporation was the largest of 7 companies reporting payments in 2025, $837.01 in all, mostly food and beverage.
Overview
| NPI | 1437937489 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Sep 20, 2023 |
| Last updated in NPPES | Sep 26, 2024 |
| Certified by provider | Sep 26, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | — | — |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Physician Assistant (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 56 |
|---|---|
| Services billed | 84 across 9 procedure codes |
| Paid by Medicare | $3,518 |
Part D prescriptions in 2024
| Prescriptions (claims) | 385 · 688 30-day fills |
|---|---|
| Patients | 136 |
| Total drug cost | $29,597 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | Western Michigan Un Homer Stryker School of Med |
|---|---|
| Graduation year | 2023 |
| Medicare specialty | Physician Assistant |
Medical group
- Paragon Health PCKalamazoo, MI · 53 clinicians
Hospital affiliations
- Borgess Medical CenterKalamazoo, MI
- Bronson Methodist HospitalKalamazoo, MI
Industry payments (Open Payments)
- 2025$837.01 · 34 payments from 7 companies
- 2024$186.84 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Genzyme Corporation | $405.02 | 12 |
| Regeneron Healthcare Solutions, Inc. | $206.40 | 13 |
| Glaxosmithkline, LLC. | $89.65 | 5 |
| Bayer Healthcare Pharmaceuticals Inc. | $49.48 | 1 |
| Cochlear Americas | $41.66 | 1 |
What the 2025 payments were for
- Food and Beverage$837.01 · 34 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 54 physician assistants in Portage · All physician assistants in Michigan