Marissa Claire Niemeyer, MSN, AGPCNP-C
NPI 1003485194ActiveIndividual· Nurse Practitioner, Gerontology· Grand Rapids, MI
Nurse Practitioner, Gerontology (MSN, AGPCNP-C) with Spectrum Health Primary Care Partners, practicing in Grand Rapids, Michigan. Their prescriptions cost Medicare Part D more than their services did: $600,361 for 4,196 claims, against $85,489 paid for services in 2024. Medtronic, Inc. was the largest of 2 companies reporting payments in 2025, $311.74 in all, mostly food and beverage.
Overview
| NPI | 1003485194 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MSN, AGPCNP-C |
| Sole proprietor | No |
| NPI issued | Jun 22, 2021 |
| Last updated in NPPES | Jan 31, 2025 |
| Certified by provider | Jan 31, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Gerontology Primary | 363LG0600X | 4704330088 | MI |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nurse Practitioner (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 146 |
|---|---|
| Services billed | 1,531 across 12 procedure codes |
| Paid by Medicare | $85,489 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,196 · 4,204 30-day fills |
|---|---|
| Patients | 171 |
| Total drug cost | $600,361 |
| Generic share | 71% of claims |
Education and affiliations
| Graduation year | 2021 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Spectrum Health Primary Care PartnersGrand Rapids, MI · 2,294 clinicians
Industry payments (Open Payments)
- 2025$311.74 · 3 payments from 2 companies
- 2024$613.16 · 12 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medtronic, Inc. | $241.42 | 2 |
| Viatris Specialty LLC | $70.32 | 1 |
What the 2025 payments were for
- Food and Beverage$311.74 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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