Karen Lynn Hennessey, M.D.
NPI 1285783175ActiveIndividual· Specialist· Bronx, NY
Specialist (M.D.) in Bronx, New York, trained at Wayne State University School of Medicine (class of 1992). Their prescriptions cost Medicare Part D more than their services did: $2,225,873 for 2,806 claims, against $2,262 paid for services in 2024. Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) was the largest of 3 companies reporting payments in 2025, $235.73 in all, mostly food and beverage.
Overview
| NPI | 1285783175 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jan 9, 2007 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Specialist Primary | 174400000X | 195693 | NY |
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 - Infectious Disease (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 20 |
|---|---|
| Services billed | 23 across 5 procedure codes |
| Paid by Medicare | $2,262 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,806 · 3,587 30-day fills |
|---|---|
| Patients | 93 |
| Total drug cost | $2,225,873 |
| Generic share | 62% of claims |
Education and affiliations
| Medical school | Wayne State University School of Medicine |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Infectious Disease |
Medical group
- Physician Affiliate Group of New York PCNew York, NY · 1,225 clinicians
Hospital affiliation
Industry payments (Open Payments)
- 2025$235.73 · 3 payments from 3 companies
- 2024$242.80 · 6 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Iti, Inc. (D/B/A Intra-Cellular Therapies, Inc.) | $120.00 | 1 |
| Theratechnologies Inc. | $89.17 | 1 |
| Gilead Sciences, Inc. | $26.56 | 1 |
What the 2025 payments were for
- Food and Beverage$235.73 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 924 Specialist providers in Bronx · All Specialist providers in New York