Alexander Brun, MD
NPI 1164735072ActiveIndividual· Internal Medicine, Gastroenterology· Brooklyn, NY
Internal Medicine, Gastroenterology (MD) with Triborough Gi PLLC, practicing in Brooklyn, New York. Their prescriptions cost Medicare Part D more than their services did: $1,142,104 for 2,240 claims, against $120,615 paid for services in 2024. Madrigal Pharmaceuticals was the largest of 10 companies reporting payments in 2025, $924.92 in all, mostly food and beverage.
Overview
| NPI | 1164735072 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 20, 2010 |
| Last updated in NPPES | Jul 6, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 264831 | 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 - Gastroenterology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 303 |
|---|---|
| Services billed | 930 across 28 procedure codes |
| Paid by Medicare | $120,615 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,240 · 3,439 30-day fills |
|---|---|
| Patients | 428 |
| Total drug cost | $1,142,104 |
| Generic share | 62% of claims |
Education and affiliations
| Graduation year | 2009 |
|---|---|
| Medicare specialty | Gastroenterology |
Medical group
- Triborough Gi PLLCBrooklyn, NY · 15 clinicians
Industry payments (Open Payments)
- 2025$924.92 · 36 payments from 10 companies
- 2024$2,017 · 106 payments from 24 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $364.71 | 5 |
| Abbvie Inc. | $166.40 | 13 |
| Ardelyx, Inc. | $137.46 | 5 |
| Aimmune Therapeutics, Inc. | $88.62 | 3 |
| Salix Pharmaceuticals, A Division of Bausch Health US, LLC | $54.31 | 3 |
What the 2025 payments were for
- Food and Beverage$924.92 · 36 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 233 gastroenterologists in Brooklyn · All gastroenterologists in New York