Jack Leon Brenner, MD
NPI 1033287347ActiveIndividual· Internal Medicine, Gastroenterology· Yorktown Heights, NY
Internal Medicine, Gastroenterology (MD) with Westchester Putnam Gastroenterology PC, practicing in Yorktown Heights, New York. Their prescriptions cost Medicare Part D more than their services did: $120,983 for 466 claims, against $21,120 paid for services in 2024. Abbvie Inc. was the largest of 15 companies reporting payments in 2025, $1,744 in all, mostly food and beverage. Lists Northern Westchester Hospital as a hospital affiliation.
Overview
| NPI | 1033287347 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Dec 4, 2006 |
| Last updated in NPPES | Sep 19, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 106478 | NY |
| Internal Medicine | 207R00000X | 106478 | NY |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 104 |
|---|---|
| Services billed | 301 across 17 procedure codes |
| Paid by Medicare | $21,120 |
Part D prescriptions in 2024
| Prescriptions (claims) | 466 · 979 30-day fills |
|---|---|
| Patients | 123 |
| Total drug cost | $120,983 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 1970 |
|---|---|
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- Westchester Putnam Gastroenterology PCJefferson Valley, NY · 14 clinicians
Hospital affiliation
- Northern Westchester HospitalMount Kisco, NY
Industry payments (Open Payments)
- 2025$1,744 · 76 payments from 15 companies
- 2024$1,370 · 61 payments from 18 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $514.31 | 21 |
| Lilly USA, LLC | $252.49 | 13 |
| Takeda Pharmaceuticals U.S.A., Inc. | $173.18 | 7 |
| Novo Nordisk Inc | $143.43 | 7 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $136.69 | 6 |
What the 2025 payments were for
- Food and Beverage$1,744 · 76 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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