Gastrointestinal Specialists of Long Island (GISLI) is a leading gastroenterology practice in Wantagh and Malverne, NY, offering comprehensive digestive and liver care to adults throughout Long Island. With over 30 years of experience, Drs. Novak and Marwil provide patients with advanced diagnostics, effective treatments, and personalized care in a state-of-the-art endoscopy center.
GISLI specializes in a wide range of gastrointestinal disorders, including ulcerative colitis, Crohn's disease, GERD, and colon cancer screening. Their team of experienced gastroenterologists is dedicated to providing empathetic care and ensuring patients receive the individualized treatment they deserve.
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