Barry S. Dorf, MD FACG
NPI 1255436499ActiveIndividual· Internal Medicine, Gastroenterology· Valley Stream, NY
Internal Medicine, Gastroenterology (MD FACG) in Valley Stream, New York, trained at Chicago College of Medicine and Surgery (class of 1980). 338 Medicare patients in 2024, $118,929 paid; nearly all of their 2,885 Part D prescriptions were generic (95%). Janssen Biotech, Inc. was the largest of 6 companies reporting payments in 2025, $1,361 in all, mostly food and beverage.
Overview
| NPI | 1255436499 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD FACG |
| Sole proprietor | No |
| NPI issued | Sep 13, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 147051 | 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 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 - Gastroenterology (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 338 |
|---|---|
| Services billed | 966 across 24 procedure codes |
| Paid by Medicare | $118,929 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,885 · 7,234 30-day fills |
|---|---|
| Patients | 358 |
| Total drug cost | $135,940 |
| Generic share | 95% of claims |
Education and affiliations
| Medical school | Chicago College of Medicine and Surgery |
|---|---|
| Graduation year | 1980 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- Gastrointestinal Care of Long Island PLLCAlbany, NY · 183 clinicians
Industry payments (Open Payments)
- 2025$1,361 · 26 payments from 6 companies
- 2024$662.83 · 19 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $628.95 | 11 |
| Madrigal Pharmaceuticals | $297.57 | 6 |
| Abbvie Inc. | $274.93 | 3 |
| Pfizer Inc. | $82.60 | 3 |
| Takeda Pharmaceuticals U.S.A., Inc. | $53.82 | 2 |
What the 2025 payments were for
- Food and Beverage$1,276 · 25 payments
- Education$84.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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