Perinkulam V. Viswanathan, MD
NPI 1194791434ActiveIndividual· Internal Medicine, Cardiovascular Disease· Monroeville, PA
Internal Medicine, Cardiovascular Disease (MD) with Specialists in Cardiovascular Medicine PC, practicing in Monroeville, Pennsylvania. Their prescriptions cost Medicare Part D more than their services did: $149,719 for 846 claims, against $83,177 paid for services in 2024. Merck Sharp & Dohme LLC was the largest of 12 companies reporting payments in 2025, $451.64 in all, mostly food and beverage. Lists Excela Health Westmoreland Regional Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1194791434 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 27, 2006 |
| Last updated in NPPES | Mar 15, 2024 |
| Certified by provider | Mar 15, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | MD073472L | PA |
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 - Cardiovascular Disease (Cardiology) (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 1,398 |
|---|---|
| Services billed | 2,853 across 32 procedure codes |
| Paid by Medicare | $83,177 |
Part D prescriptions in 2024
| Prescriptions (claims) | 846 · 2,007 30-day fills |
|---|---|
| Patients | 167 |
| Total drug cost | $149,719 |
| Generic share | 84% of claims |
Education and affiliations
| Graduation year | 1990 |
|---|---|
| Medicare specialty | Cardiovascular Disease (Cardiology) |
Medical group
- Specialists in Cardiovascular Medicine PCMonroeville, PA · 6 clinicians
Hospital affiliations
- Excela Health Westmoreland Regional HospitalGreensburg, PA
- Forbes HospitalMonroeville, PA
- Magee Womens Hospital of Upmc Health SystemPittsburgh, PA
- Upmc EastMonroeville, PA
- Upmc Presbyterian ShadysidePittsburgh, PA
Industry payments (Open Payments)
- 2025$451.64 · 26 payments from 12 companies
- 2024$576.99 · 37 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $61.32 | 3 |
| Boston Scientific Corporation | $52.22 | 3 |
| Novartis Pharmaceuticals Corporation | $51.23 | 3 |
| E.R. Squibb & Sons, L.L.C. | $49.84 | 3 |
| Amgen Inc. | $46.56 | 3 |
What the 2025 payments were for
- Food and Beverage$451.64 · 26 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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