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Specialties: Gastrointestinal Specialists of Long Island (GISLI) is a state-of-the-art gastroenterology practice providing comprehensive digestive and liver care to all adults throughout Long Island. With two convenient offices in Wantagh and Malverne, New York, Drs. Novak and Marwil provide patients with unparalleled preventive care, advanced diagnostics, and effective treatments. The gastroenterologists at GISLI offer patients more than 30 years of experience. They've created a premier endoscopy center that ensures patient... read more
3019 Merrick Rd, Wantagh, NY, 11793, United States
Get directionsWeekday | Schedule | Status |
---|---|---|
Mon | 9:00 a.m. to 6:00 p.m. | |
Tue | 9:00 a.m. to 6:00 p.m. | |
Wed | 9:00 a.m. to 5:00 p.m. | |
Thu | 9:00 a.m. to 5:00 p.m. | |
Fri | 9:00 a.m. to 3:00 p.m. | |
Sat | Closed | |
Sun | Closed |
Professional, timely. Good bedside manner
I have been a patient since 2007 when I was very sick. Dr. Novak conducted thorough testing, diagnosed me and treated me. I see him annually. I live 45 minutes away. Well worth the trip. He takes the time to answer and explain any concerns you may have. My children now are patients. Health is Wealth. Highly recommend.
What a “Great team”. The moment I entered I was greeted with such a warm and friendly smile from the receptionists that continued throughout my whole visit. Dr. Zachary Marwil is the best!!! He is very caring and friendly and you never feel rushed!!! He explains test results. clearly and makes sure you understand it. I highly recommend this office and doctor to my family and friends and anyone who is looking for excellent G. I. care.
What a great office and great experience. It was my first time there and Dr. Marwil was great! Very insightful and professional.
Gastrointestinal Specialists of Long Island has a 5 star rating with 184 reviews.
Gastrointestinal Specialists of Long Island is closed now. It will open tomorrow at 9:00 a.m.
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