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In Wantagh, Dr. Zachary R. Marwil works as a gastroenterologist at Gastrointestinal Specialist of Long Island, P.C.
The office is at 3019 Merrick Rd, Wantagh, NY 11793; the phone number on record is (516) 785-8075. Dr. Marwil accepts Medicare assignment, which means he takes the Medicare-approved amount as full payment for covered services. Telehealth visits are listed as available.
Dr. Marwil is affiliated with Mercy Medical Center.
Dr. Marwil at a glance
- Specialty
- Gastroenterologist
- Credentials
- MD
- Practice
- Gastrointestinal Specialist of Long Island, P.C.
- Address
- 3019 Merrick Rd, Wantagh, NY 11793
- Phone
- (516) 785-8075
- Hospital affiliations
- Mercy Medical Center
- Medicare assignment
- Accepts
- Telehealth
- Available
- NPI number
- 1609002229
- NY license no.
- 268414
Your review of Dr. Marwil — wait times, how well things were explained, how you were treated — helps other patients decide.
Medicare, Medicaid and hospitals
- Medicare patients (2024)
- 359 people with traditional Medicare, average age 73
- Most common services billed to Medicare
- Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope
- Biopsy of large bowel using a flexible endoscope
- Removal of polyps or growths of large bowel using an endoscope with mechanical snare
- Procedures on Medicare Care Compare
- Colonoscopy 236 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux 131 procedures
- Medicare quality score (MIPS 2024)
- 93 out of 100
- New York Medicaid
- Enrolled fee-for-service provider since 2013. Medicaid managed-care plans keep their own networks, so check with your plan.
- Hospital pages
- Mercy Medical Center
Medicare figures cover people with traditional (fee-for-service) Medicare only; services billed for fewer than 11 patients are not published.
Comparing gastroenterologists? See 4 in Wantagh or 109 across Long Island.
Other gastroenterologists in Long Island
Dr. Babak Danesh, MDGastroenterologist · Chs Physician Partners PCNo reviews yetBabylon, NY
Dr. Charles A. Albert, MDGastroenterologist · Gastroenterology Associates of Suffolk PCNo reviews yetSmithtown, NY
Dr. Darius Sorbi, MDGastroenterologist · Island Gastroenterology Consultants PCNo reviews yetWest Islip, NY
Dr. David B. Purow, MDGastroenterologist · North Shore-Lij Medical PCNo reviews yetHuntington, NY
Dr. Dhiren C. Mehta, MDGastroenterologist · Mehta and Mehta Physicians PCNo reviews yetGreenport, NY
Dr. Elliot B. Dreznick, MDGastroenterologist · Chs Physician Partners PCNo reviews yetPort Jefferson Station, NYWrite a review
Frequently Asked Questions
With Gastrointestinal Specialist of Long Island, P.C., at 3019 Merrick Rd, Wantagh, NY 11793.
Call the office at (516) 785-8075.
Yes — Dr. Marwil accepts Medicare assignment, taking the Medicare-approved amount as full payment for covered services.
Mercy Medical Center.
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