Quick answers
- Which hospitals does Gary R. Bernstein work at?
- Medicare's official clinician data lists Gary R. Bernstein at 2 hospitals: John T Mather Memorial Hospital of Port Jefferson and Suny/Stony Brook University Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gary R. Bernstein see patients?
- Medicare's clinician data lists 1 practice location in East Setauket, NY. Call before your visit to confirm the address.
- What is Gary R. Bernstein's specialty?
- Medicare lists Gastroenterology as the primary specialty.
- Does Gary R. Bernstein accept Medicare assignment?
- Yes. Medicare's clinician data says Gary R. Bernstein accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for Gary R. Bernstein?
- (631) 751-8700, as listed in official Medicare / NPI Registry data.
- What is Gary R. Bernstein's NPI number?
- 1407813579. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gary R. Bernstein works
Medicare's Facility Affiliation Data lists Gary R. Bernstein at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- John T Mather Memorial Hospital of Port JeffersonPort Jefferson, NY · Acute Care Hospital · CCN 330185
- Suny/Stony Brook University HospitalStony Brook, NY · Acute Care Hospital · CCN 330393
Practice locations
Addresses where Gary R. Bernstein is enrolled with Medicare (CMS data updated 2026-10-02).
- 3400 Nesconset Hwy, Suite 101East Setauket, NY 11733 (631) 751‑8700
Group practices
Medicare enrollment lists Gary R. Bernstein as a member of this group (CMS data updated 2026-10-02).
- Medical Services of Setauket PC15 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in East Setauket
Clinicians with the same Medicare primary specialty in East Setauket, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1981 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1407813579 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians