Quick answers
- Which hospitals does Marc E. Finkelstein work at?
- Medicare's official clinician data lists Marc E. Finkelstein at 1 hospital: Good Samaritan Hospital Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Marc E. Finkelstein see patients?
- Medicare's clinician data lists 1 practice location in Hampton Bays, NY. Call before your visit to confirm the address.
- What is Marc E. Finkelstein's specialty?
- Medicare lists General Surgery as the primary specialty.
- Does Marc E. Finkelstein accept Medicare assignment?
- Yes. Medicare's clinician data says Marc E. Finkelstein 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 Marc E. Finkelstein?
- (631) 723-5000, as listed in official Medicare / NPI Registry data.
- What is Marc E. Finkelstein's NPI number?
- 1801892906. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Marc E. Finkelstein works
Medicare's Facility Affiliation Data lists Marc E. Finkelstein at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Good Samaritan Hospital Medical CenterWest Islip, NY · Acute Care Hospital · CCN 330286
Practice locations
Addresses where Marc E. Finkelstein is enrolled with Medicare (CMS data updated 2026-10-02).
- 255 W Montauk Hwy, Life Care CtrHampton Bays, NY 11946 (631) 723‑5000
Group practices
Medicare enrollment lists Marc E. Finkelstein as a member of this group (CMS data updated 2026-10-02).
- Stony Brook Surgical Associates University Faculty Practice Corporati109 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Hampton Bays
Clinicians with the same Medicare primary specialty in Hampton Bays, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1980 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1801892906 |
| 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