William F. Armstrong, MD
NPI 1487739553ActiveIndividual· Internal Medicine, Cardiovascular Disease· Ann Arbor, MI
Internal Medicine, Cardiovascular Disease (MD) in Ann Arbor, Michigan, trained at Virginia Commonwealth University, School of Medicine (class of 1976). Their prescriptions cost Medicare Part D more than their services did: $316,091 for 1,422 claims, against $45,822 paid for services in 2024.
Overview
| NPI | 1487739553 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 26, 2006 |
| Last updated in NPPES | Feb 6, 2020 |
| Certified by provider | Feb 6, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | 4301055513 | MI |
| Internal Medicine | 207R00000X | 4301055513 | 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 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Cardiovascular Disease (Cardiology) (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 610 |
|---|---|
| Services billed | 1,213 across 30 procedure codes |
| Paid by Medicare | $45,822 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,422 · 3,746 30-day fills |
|---|---|
| Patients | 245 |
| Total drug cost | $316,091 |
| Generic share | 82% of claims |
Education and affiliations
| Medical school | Virginia Commonwealth University, School of Medicine |
|---|---|
| Graduation year | 1976 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Regents of the University of MichiganAnn Arbor, MI · 3,346 clinicians
Hospital affiliation
- University of Michigan Health SystemAnn Arbor, MI
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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