Mark Brennan, DO
NPI 1174523443ActiveIndividual· Surgery, Vascular Surgery· Johnson City, NY
Surgery, Vascular Surgery (DO) in Johnson City, New York, trained at Philadelphia College of Osteopathic Medicine (class of 1994). In 2024 Medicare paid $46,838 for 123 patients, and Part D covered 71 of their prescriptions, 54% of them generic. Medtronic, Inc. was the largest of 14 companies reporting payments in 2025, $1,903 in all, mostly food and beverage.
Overview
| NPI | 1174523443 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Jul 28, 2005 |
| Last updated in NPPES | Sep 15, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery, Vascular Surgery Primary | 2086S0129X | 217717 | NY |
| Surgery | 208600000X | 217717 | 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 - Vascular Surgery (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 123 |
|---|---|
| Services billed | 340 across 97 procedure codes |
| Paid by Medicare | $46,838 |
Part D prescriptions in 2024
| Prescriptions (claims) | 71 · 77 30-day fills |
|---|---|
| Patients | 21 |
| Total drug cost | $21,440 |
| Generic share | 54% of claims |
Education and affiliations
| Medical school | Philadelphia College of Osteopathic Medicine |
|---|---|
| Graduation year | 1994 |
| Medicare specialty | Vascular Surgery |
Medical groups
- United Health Services Hospitals, Inc.Vestal, NY · 477 clinicians
- Chenango Memorial Hospital IncSidney, NY · 111 clinicians
Hospital affiliation
- United Health Services Hospitals, IncBinghamton, NY
Industry payments (Open Payments)
- 2025$1,903 · 34 payments from 14 companies
- 2024$2,786 · 32 payments from 12 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Medtronic, Inc. | $564.99 | 8 |
| Baxter Healthcare | $467.59 | 10 |
| Shockwave Medical, Inc | $162.39 | 1 |
| Abbott Laboratories | $143.53 | 1 |
| Smith+nephew, Inc. | $142.32 | 4 |
What the 2025 payments were for
- Food and Beverage$1,903 · 34 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other vascular surgeons in Johnson City
- 1760482863