Takes about two minutes. Only your first name or chosen display name is shown — your email stays private.
In Oceanside, Dr. Marc Fenster works as an internal medicine physician at Five Towns Gastroenterology.
He graduated from Albert Einstein College of Medicine of Yeshiva University in 2017, which means 9 years have passed since medical school.
Five Towns Gastroenterology's Oceanside location at 1 Healthy Way, Oceanside, NY 11572 is where Dr. Fenster sees patients — appointments by phone at (516) 632-3000. A second listed location: 327 Beach 19th St, Far Rockaway, NY 11691. For Medicare patients: Dr. Fenster accepts assignment.
On the hospital side, Dr. Fenster holds an affiliation with St. John's Episcopal Hospital at South Shore.
About Dr. Fenster's practice
- Specialty
- Internal medicine physician
- Credentials
- MD
- Practice
- Five Towns Gastroenterology
- Address
- 1 Healthy Way, Oceanside, NY 11572
- Phone
- (516) 632-3000
- Other locations
- 327 Beach 19th St, Far Rockaway, NY 11691
- Medical school
- Albert Einstein College of Medicine of Yeshiva University (2017)
- Hospital affiliations
- St. John's Episcopal Hospital at South Shore
- Medicare assignment
- Accepts
- NPI number
- 1144751595
- NY license no.
- 302653
Seen Dr. Fenster recently? Share how your visit went.
Medicare, Medicaid and hospitals
- Medicare patients (2024)
- 54 people with traditional Medicare, average age 73
- Procedures on Medicare Care Compare
- Upper gastrointestinal (GI) endoscopy for acid reflux 1–10 procedures
- Colonoscopy 1–10 procedures
- Medicare quality score (MIPS 2024)
- 100 out of 100 — reported through the group practice
- New York Medicaid
- Enrolled fee-for-service provider since 2023. Medicaid managed-care plans keep their own networks, so check with your plan.
- Hospital pages
- St. John's Episcopal Hospital at South Shore
Medicare figures cover people with traditional (fee-for-service) Medicare only; services billed for fewer than 11 patients are not published.
Comparing internists? See 4 in Oceanside or 206 across Long Island.
Other internists in Long Island
Dr. Erdal C. Gursoy, MDInternist · Ismail Ozcan MD PCNo reviews yetLake Ronkonkoma, NY
Dr. Evangelia L. Augoustiniatos, MDInternist · E.lila Augoustiniatos, Md, PCNo reviews yetSmithtown, NY
Dr. Farkhunda Raza, MDInternist · Caremed Primary and Urgent Care PCNo reviews yetBay Shore, NY
Dr. Florence Pua, MDInternist · Medical Services of Northeastern Queens PLLCNo reviews yetBrentwood, NY
Dr. George N. Coritsidis, MDInternist · John T Mather Memorial HospitalNo reviews yetPort Jefferson, NY
Dr. Grace E. Reina, MDInternist · Stony Brook Internists University Faculty Practice CorporationNo reviews yetStony Brook, NYWrite a review
Frequently Asked Questions
With Five Towns Gastroenterology, at 1 Healthy Way, Oceanside, NY 11572.
Call the office at (516) 632-3000.
Yes — Dr. Fenster accepts Medicare assignment, taking the Medicare-approved amount as full payment for covered services.
St. John's Episcopal Hospital at South Shore.
Is this your profile?
