Gastrointestinal Specialists of Long Island
Business hours
| Monday | 9:00am to 6:00pm |
| Tuesday | 9:00am to 6:00pm |
| Wednesday | 9:00am to 5:00pm |
| Thursday | 9:00am to 5:00pm |
| Friday | 9:00am to 3:00pm |
| Saturday | Closed |
| Sunday | Closed |
About us
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 patients receive comfortable, personalized care. The practice offers upper endoscopy, colonoscopy, and office-based capsule endoscopy to view the entire small bowel.
| Languages | en_US |
| Services | Diarrhea,Anemia,EGD,Colon Cancer Screening,Barrett’s Esophagus,Irritable Bowel Syndrome,Acid Reflux,Diverticulitis,GERD,Abdominal Pain,Rectal Bleeding,Crohn’s Disease,Capsule Endoscopy,Ulcerative Colitis,Colonoscopy,Constipation |