John Francis Michael Hennecken, MD
NPI 1104856780ActiveIndividual· Internal Medicine, Cardiovascular Disease· Brooklyn, NY
Internal Medicine, Cardiovascular Disease (MD) in Brooklyn, New York, trained at State University of New York Downstate Medical Center (class of 1981). Their prescriptions cost Medicare Part D more than their services did: $222,990 for 2,107 claims, against $50,431 paid for services in 2024. Boston Scientific Corporation was the largest of 2 companies reporting payments in 2025, $1,057 in all, mostly food and beverage.
Overview
| NPI | 1104856780 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 3, 2006 |
| Last updated in NPPES | May 18, 2020 |
| Certified by provider | May 18, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | 15076501 | NY |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | 35901 | GA |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | 035901 | GA |
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) (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 219 |
|---|---|
| Services billed | 886 across 13 procedure codes |
| Paid by Medicare | $50,431 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,107 · 5,929 30-day fills |
|---|---|
| Patients | 305 |
| Total drug cost | $222,990 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | State University of New York Downstate Medical Center |
|---|---|
| Graduation year | 1981 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
Medical group
- Icahn School of Medicine at Mount SinaiNew York, NY · 2,843 clinicians
Industry payments (Open Payments)
- 2025$1,057 · 9 payments from 2 companies
- 2024$486.81 · 4 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $584.29 | 6 |
| Bard Peripheral Vascular, Inc. | $472.38 | 3 |
What the 2025 payments were for
- Food and Beverage$1,057 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other cardiologists in Brooklyn
- 1003082850
- 1013194711
- 1033176813
- 1033316047
- 1043213440
- 1043275092
- 1043405541
- 1053322198
- 1083877666
- 1093794661
- 1104052570
- 1154569606
All 311 cardiologists in Brooklyn · All cardiologists in New York