Joan E. Nagelkirk, MD
NPI 1912951211ActiveIndividual· Hospitalist· Muskegon, MI
Hospitalist (MD) in Muskegon, Michigan, trained at University of Tennessee, Hsc, College of Medicine (class of 1982). Mostly services rather than prescriptions: Medicare paid $21,887 for 100 patients in 2024, with only 29 Part D claims. Vertex Pharmaceuticals Incorporated was the largest of 3 companies reporting payments in 2025, $52.54 in all, mostly food and beverage.
Overview
| NPI | 1912951211 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 20, 2006 |
| Last updated in NPPES | Apr 23, 2022 |
| Certified by provider | Apr 23, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Hospitalist Primary | 208M00000X | 4301064351 | MI |
| Internal Medicine | 207R00000X | 4301064351 | 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 - Internal Medicine (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 100 |
|---|---|
| Services billed | 222 across 12 procedure codes |
| Paid by Medicare | $21,887 |
Part D prescriptions in 2024
| Prescriptions (claims) | 29 · 35 30-day fills |
|---|---|
| Total drug cost | $1,984 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | University of Tennessee, Hsc, College of Medicine |
|---|---|
| Graduation year | 1982 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Geriatric Medicine, Hospitalist |
Medical group
- Mercy Specialty ServicesMuskegon, MI · 90 clinicians
Hospital affiliation
- Trinity Health Muskegon HospitalMuskegon, MI
Industry payments (Open Payments)
- 2025$52.54 · 3 payments from 3 companies
- 2024$99.36 · 4 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Vertex Pharmaceuticals Incorporated | $20.53 | 1 |
| E.R. Squibb & Sons, L.L.C. | $17.52 | 1 |
| Merck Sharp & Dohme LLC | $14.49 | 1 |
What the 2025 payments were for
- Food and Beverage$52.54 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 35 hospitalists in Muskegon · All hospitalists in Michigan