Erika Kristin Koerner, AGPCNP-BC
NPI 1427527613ActiveIndividual· Nurse Practitioner· Ypsilanti, MI
Nurse Practitioner (AGPCNP-BC) with Iha Health Services Corporation, practicing in Ypsilanti, Michigan. Their prescriptions cost Medicare Part D more than their services did: $127,587 for 730 claims, against $18,944 paid for services in 2024. Pfizer Inc. was the largest of 3 companies reporting payments in 2025, $77.54 in all, mostly food and beverage. Lists St Joe Mercy Hospital System Livonia and 1 other hospital as hospital affiliations.
Overview
| NPI | 1427527613 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | AGPCNP-BC |
| Sole proprietor | No |
| NPI issued | Nov 16, 2018 |
| Last updated in NPPES | Aug 26, 2025 |
| Certified by provider | Aug 26, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 4704239361 | MI |
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 - Nurse Practitioner (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 435 |
|---|---|
| Services billed | 506 across 9 procedure codes |
| Paid by Medicare | $18,944 |
Part D prescriptions in 2024
| Prescriptions (claims) | 730 · 1,572 30-day fills |
|---|---|
| Patients | 196 |
| Total drug cost | $127,587 |
| Generic share | 81% of claims |
Education and affiliations
| Graduation year | 2017 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Iha Health Services CorporationPontiac, MI · 1,168 clinicians
Hospital affiliations
- St Joe Mercy Hospital System LivoniaLivonia, MI
- Trinity Health Ann Arbor HospitalAnn Arbor, MI
Industry payments (Open Payments)
- 2025$77.54 · 3 payments from 3 companies
- 2024$44.15 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $32.64 | 1 |
| Abbvie Inc. | $23.89 | 1 |
| Bard Peripheral Vascular, Inc. | $21.01 | 1 |
What the 2025 payments were for
- Food and Beverage$77.54 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 59 nurse practitioners in Ypsilanti · All nurse practitioners in Michigan