Ann Elizabeth Chamberlain, NP
NPI 1851984330ActiveIndividual· Nurse Practitioner, Gerontology· Grand Rapids, MI
Nurse Practitioner, Gerontology (NP) with Spectrum Health Primary Care Partners and 2 other groups, practicing in Grand Rapids, Michigan. Their prescriptions cost Medicare Part D more than their services did: $200,310 for 406 claims, against $28,986 paid for services in 2024. Pfizer Inc. reported $16.67 in payments in 2025, mostly food and beverage. Lists Corewell Health Big Rapids Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1851984330 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | No |
| NPI issued | Feb 16, 2021 |
| Last updated in NPPES | Mar 6, 2025 |
| Certified by provider | Mar 6, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Gerontology Primary | 363LG0600X | 4704289609 | 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 | 58 |
|---|---|
| Services billed | 463 across 16 procedure codes |
| Paid by Medicare | $28,986 |
Part D prescriptions in 2024
| Prescriptions (claims) | 406 · 419 30-day fills |
|---|---|
| Patients | 63 |
| Total drug cost | $200,310 |
| Generic share | 91% of claims |
Education and affiliations
| Graduation year | 2020 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical groups
- Spectrum Health Primary Care PartnersGrand Rapids, MI · 2,294 clinicians
- Powerback Rehabilitation LLCJackson, MI · 649 clinicians
- Msu Health Care Inc.East Lansing, MI · 198 clinicians
Hospital affiliations
- Corewell Health Big Rapids HospitalBig Rapids, MI
- Corewell Health Pennock HospitalHastings, MI
- Corewell Health Zeeland HospitalZeeland, MI
- Edward W Sparrow HospitalLansing, MI
- Spectrum HealthGrand Rapids, MI
Industry payments (Open Payments)
- 2025$16.67 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $16.67 | 1 |
What the 2025 payments were for
- Food and Beverage$16.67 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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