William K. Rosen, M.D.
NPI 1437240520ActiveIndividual· Family Medicine, Geriatric Medicine· Springfield, MO
Family Medicine, Geriatric Medicine (M.D.) in Springfield, Missouri, trained at University of Missouri, Columbia School of Medicine (class of 1977). Their prescriptions cost Medicare Part D more than their services did: $686,155 for 12,738 claims, against $22,137 paid for services in 2024. Eisai Inc. was the largest of 14 companies reporting payments in 2025, $1,087 in all, mostly food and beverage.
Overview
| NPI | 1437240520 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Sep 27, 2006 |
| Last updated in NPPES | Nov 8, 2024 |
| Certified by provider | Nov 8, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine, Geriatric Medicine Primary | 207QG0300X | R2A48 | MO |
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 - Geriatric Medicine (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 134 |
|---|---|
| Services billed | 421 across 30 procedure codes |
| Paid by Medicare | $22,137 |
Part D prescriptions in 2024
| Prescriptions (claims) | 12,738 · 22,112 30-day fills |
|---|---|
| Patients | 571 |
| Total drug cost | $686,155 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | University of Missouri, Columbia School of Medicine |
|---|---|
| Graduation year | 1977 |
| Medicare specialty | Geriatric Medicine |
| Secondary specialties | Family Practice |
Medical group
- Lester E Cox Medical CentersOzark, MO · 246 clinicians
Hospital affiliation
- Cox Medical CentersSpringfield, MO
Other facilities
- Coxhealth at HomeHome health agency · Springfield, MO
- Phoenix Home Care and HospiceHome health agency · Springfield, MO
- Coxhealth at HomeHospice · Springfield, MO
Industry payments (Open Payments)
- 2025$1,087 · 52 payments from 14 companies
- 2024$418.84 · 21 payments from 14 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Eisai Inc. | $252.02 | 10 |
| Novo Nordisk Inc | $204.49 | 7 |
| Astrazeneca Pharmaceuticals LP | $179.44 | 12 |
| Lilly USA, LLC | $122.09 | 6 |
| Abbott Laboratories | $94.90 | 4 |
What the 2025 payments were for
- Food and Beverage$1,087 · 52 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Family Medicine, Geriatric Medicine providers in Springfield
- 1841427515
All Family Medicine, Geriatric Medicine providers in Missouri