Leonid G. Karpenos, M.D.
NPI 1336267350ActiveIndividual· Specialist· Westport, CT
Specialist (M.D.) in Westport, Connecticut, trained at New York University School of Medicine (class of 1990). Their prescriptions cost Medicare Part D more than their services did: $775,190 for 4,280 claims, against $101,364 paid for services in 2024. Novo Nordisk Inc was the largest of 3 companies reporting payments in 2025, $500.01 in all, mostly food and beverage.
Overview
| NPI | 1336267350 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 27, 2007 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Specialist Primary | 174400000X | 035041 | CT |
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) (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 236 |
|---|---|
| Services billed | 2,132 across 28 procedure codes |
| Paid by Medicare | $101,364 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,280 · 11,579 30-day fills |
|---|---|
| Patients | 406 |
| Total drug cost | $775,190 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | New York University School of Medicine |
|---|---|
| Graduation year | 1990 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Telehealth | Offers telehealth |
Medical group
- Westport Cardiology,llcWestport, CT · 2 clinicians
Hospital affiliations
- Bridgeport HospitalBridgeport, CT
- Danbury HospitalDanbury, CT
- Greenwich Hospital Association -Greenwich, CT
- Norwalk HospitalNorwalk, CT
- Stamford HospitalStamford, CT
Industry payments (Open Payments)
- 2025$500.01 · 4 payments from 3 companies
- 2024$125.00 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $250.01 | 2 |
| Axsome Therapeutics, Inc. | $125.00 | 1 |
| Abbvie Inc. | $125.00 | 1 |
What the 2025 payments were for
- Food and Beverage$500.01 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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