Michael Christopher Armstrong, M.D.
NPI 1538518238ActiveIndividual· Internal Medicine, Cardiovascular Disease· Greenville, SC
Internal Medicine, Cardiovascular Disease (M.D.) with Prisma Health University Medical Group, practicing in Greenville, South Carolina. Their prescriptions cost Medicare Part D more than their services did: $571,011 for 2,899 claims, against $117,968 paid for services in 2024. Novartis Pharmaceuticals Corporation was the largest of 14 companies reporting payments in 2025, $978.07 in all, mostly food and beverage. Lists Prisma Health Baptist Easley Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1538518238 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 3, 2016 |
| Last updated in NPPES | Jun 17, 2022 |
| Certified by provider | Jun 17, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | 39497 | SC |
| Internal Medicine | 207R00000X | LL39497 | SC |
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) (SC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,271 |
|---|---|
| Services billed | 2,572 across 35 procedure codes |
| Paid by Medicare | $117,968 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,899 · 6,661 30-day fills |
|---|---|
| Patients | 513 |
| Total drug cost | $571,011 |
| Generic share | 75% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Secondary specialties | Internal Medicine |
Medical group
- Prisma Health University Medical GroupGreenville, SC · 2,493 clinicians
Hospital affiliations
- Prisma Health Baptist Easley HospitalEasley, SC
- Prisma Health Greenville Memorial HospitalGreenville, SC
- Prisma Health Greer Memorial HospitalSpartanburg, SC
- Prisma Health Hillcrest HospitalSimpsonville, SC
- Prisma Health Oconee Memorial HospitalSeneca, SC
Industry payments (Open Payments)
- 2025$978.07 · 51 payments from 14 companies
- 2024$1,358 · 73 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $193.36 | 11 |
| Amgen Inc. | $153.36 | 9 |
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $136.20 | 9 |
| Boston Scientific Corporation | $119.16 | 5 |
| Philips North America LLC | $80.10 | 3 |
What the 2025 payments were for
- Food and Beverage$978.07 · 51 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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