Bruce T. Brennan, MD
NPI 1013927797ActiveIndividual· Internal Medicine· Ansonia, CT
Internal Medicine (MD) in Ansonia, Connecticut, trained at George Washington University School of Medicine (class of 1978). Their prescriptions cost Medicare Part D more than their services did: $253,376 for 1,914 claims, against $11,598 paid for services in 2024. Lilly USA, LLC was the largest of 5 companies reporting payments in 2025, $1,345 in all, mostly food and beverage.
Overview
| NPI | 1013927797 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Aug 8, 2006 |
| Last updated in NPPES | Aug 16, 2010 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 022798 | 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 - Internal Medicine (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 61 |
|---|---|
| Services billed | 227 across 15 procedure codes |
| Paid by Medicare | $11,598 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,914 · 5,004 30-day fills |
|---|---|
| Patients | 193 |
| Total drug cost | $253,376 |
| Generic share | 87% of claims |
Education and affiliations
| Medical school | George Washington University School of Medicine |
|---|---|
| Graduation year | 1978 |
| Medicare specialty | Internal Medicine |
Hospital affiliation
- Griffin HospitalDerby, CT
Industry payments (Open Payments)
- 2025$1,345 · 11 payments from 5 companies
- 2024$1,788 · 15 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $492.41 | 4 |
| Novo Nordisk Inc | $355.18 | 3 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $247.31 | 2 |
| Astrazeneca Pharmaceuticals LP | $125.00 | 1 |
| Otsuka America Pharmaceutical, Inc. | $124.99 | 1 |
What the 2025 payments were for
- Food and Beverage$1,345 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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