LOCAL HEALTHCARE PROVIDERS
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62 providers
Availability last updated 10/30/2025
Michael Ashamalla, MD, is a board-certified gastroenterologist who proudly serves the patients of Syosset, Long Island, New York, at Long Island Gastro. Specializing in gastroenterology, hepatology, and nutrition, Dr. Ashamalla offers expert care for a wide range of digestive health concerns—from acid reflux and abdominal pain to liver disease and irritable bowel syndrome (IBS).
Dr. Ashamalla began his medical career through the prestigious combined BA/MD program at Siena College and Albany Medical College, graduating magna cum laude. He completed his residency in Internal Medicine at North Shore/LIJ (now Northwell Health), where he served as Chief Medical Resident. He went on to complete his fellowship in Gastroenterology at NYU Langone Health, one of the nation's top-ranked programs for GI care.
With a reputation for thorough and compassionate care, Dr. Ashamalla is dedicated to listening closely to his patients and developing personalized treatment plans. His approach combines clinical excellence with a deep commitment to patient well-being, ensuring each individual receives the attentive care they deserve.
If you're seeking a trusted gastroenterologist in Syosset, schedule an appointment with Dr. Ashamalla today to take the first step toward better digestive health.
Dr. Michael Ashamalla
Gastroenterologist
121 Eileen Way
Syosset, NY 11791
Faisal Sheikh, DO is a Gastroenterology specialist in Syosset, New York. Dr. Sheikh is affiliated with Northwell Health and multiple hospitals in the area. He received his medical degree from New York College of Osteopathic Medicine.
After graduating, Dr. Sheikh completed his residency at North Shore University Hospital in Manhasset, New York. He then went on to become double board-certified in Internal Medicine and Gastroenterology.
Dr. Sheikh joined Long Island Gastro in 2014 and has been serving the Syosset community ever since. He is fluent in both English and Urdu.
In his free time away from the practice, Dr. Sheikh enjoys spending time with his family.
Dr. Faisal Sheikh, DO
Gastroenterologist
121 Eileen Way
Syosset, NY 11791
Jeffery Novak, MD, FACG, is a gastroenterologist and partner at Gastrointestinal Specialists of Long Island (GISLI) located in Wantagh and Malverne, New York. He is also a founding member of the Endoscopy Center of Long Island in Garden City, New York. He has been serving patients in the area since 1998.
Dr. Novak earned his Bachelor of Science in biology from Trinity College, where he was a member of Phi Beta Kappa and received several academic honors.
Dr. Novak attended medical school at the Albert Einstein College of Medicine, where he earned honors in gastroenterology, infectious disease, and other specialties.
After graduation, Dr. Novak completed his internship and residency in internal medicine at Mount Sinai Hospital in New York City. He then completed his fellowship in gastroenterology at Jackson Memorial Hospital Center in Miami, Florida.
Dr. Novak brings over 25 years of experience to his patients at Gastrointestinal Specialists of Long Island. He diagnoses and treats all gastrointestinal conditions, with his ultimate goal being to ensure that each patient feels comfortable and valued under his care.
Dr. Novak is a Diplomate of the American Board of Gastroenterology and the American Board of Internal Medicine. He is a member of the American College of Gastroenterology, the American Society of Gastrointestinal Endoscopy, the New York Society for Gastroenterology and Endoscopy, and the Nassau County Medical Society.
Dr. Jeffrey Novak, MD
Specialist
3019 Merrick Rd
Wantagh, NY 11793
Zachary Marwil, MD, is a highly respected and sought-after gastroenterologist on Long Island. Dr. Marwil is a partner at Gastrointestinal Specialists of Long Island (GISLI) and also serves as the managing director at the Northwell Health Endoscopy Center of Long Island. He is board-certified in both gastroenterology and internal medicine.
Dr. Marwil attended the University of Michigan as an undergraduate and earned his Doctor of Medicine from St. George’s University School of Medicine.
Dr. Marwil completed his residency in internal medicine at the State University of New York (SUNY) Downstate Medical Center, where he also had the honor of serving as the chief resident in the department of medicine. He continued his training as a fellow and then as chief fellow in the division of gastroenterology and hepatology at SUNY Downstate Medical Center.
Both during his post-graduate training and as an attending, Dr. Marwil has authored several research abstracts and journal articles. His findings have been published in peer-reviewed journals and presented at national meetings.
Having held several teaching positions, Dr. Marwil is currently on faculty as an Assistant Professor at the Zucker School of Medicine at Hofstra. He is a member of the American College of Gastroenterology, the American Society of Gastrointestinal Endoscopy, and the New York Society for Gastroenterology and Endoscopy.
Dr. Marwil takes great pride in offering state-of-the-art gastroenterology care for people of all ages and strives to treat each patient with the care and empathy they deserve. When not in the office, Dr. Marwil stays active through mountain biking, skiing, golf, and tennis. He mostly enjoys spending time with his wife and two daughters.
Dr. Zachary Marwil, MD
Gastroenterologist
3019 Merrick Rd
Wantagh, NY 11793
Sejal Lauro, MS, RPA-C, is a board-certified physician assistant at Stoneleigh Primary Care, which has locations in Brewster, Jefferson Valley, Pawling, and Yorktown Heights, New York. She has over twenty years of health care experience and is proud to provide compassionate medical care to her patients.
Sejal earned her master’s degree in physician assistant studies, specializing in internal medicine, from the University of Nebraska, Omaha. She is nutritarian certified in plant-based nutrition, which allows her to serve a broad patient population. Sejal is also certified in performing nonsurgical cosmetic procedures and is well-known for her attention to detail and precise skills in this area.
At Stoneleigh Primary Care, Sejal takes time to get to know her patients and answer any questions they have. She ensures they feel comfortable and seeks to help them understand their condition. She is thrilled to welcome new patients to Stoneleigh Primary Care.
To schedule an appointment with Sejal or another member of the team, call Stoneleigh Primary Care or request an appointment online today.
Sejal Otero, PA
Physician Assistant
1872 Commerce St
Yorktown Heights, NY 10598
Zafar Zamir, MD, FACG, AGAF is a Board-Certified Gastroenterologist who has been caring for the Hamilton community for decades. He earned his Medical Degree from Dow Medical College in Pakistan, and completed his Residency Training at Cook County Hospital in Chicago and Fellowship in Gastroenterology from the Medical College of Wisconsin.
Dr. Zamir has a particular interest in IBS and General Gastroenterology, including hemorrhoids and other ano-rectal disorders. Dr. Zamir has held a variety of leadership roles in the local community, including as a Clinical Assistant Professor at Rutgers RWJ Medical School and as President of the Medical Staff at RWJ University Hospital Hamilton.
Please note that Maniya Health Medical Group does not employ or in any way supervise Dr. Zafar Zamir, MD. He is employed by Hamilton Gastroenterology. Patients should contact Hamilton GI's offices directly for all questions concerning their GI treatment.
Zafar Zamir, MD
Gastroenterologist
800 Denow Road
Suite K
Hopewell, NJ 08534
Zafar Zamir, MD, FACG, AGAF is a Board-Certified Gastroenterologist who has been caring for the Hamilton community for decades. He earned his Medical Degree from Dow Medical College in Pakistan, and completed his Residency Training at Cook County Hospital in Chicago and Fellowship in Gastroenterology from the Medical College of Wisconsin.
Dr. Zamir has a particular interest in IBS and General Gastroenterology, including hemorrhoids and other ano-rectal disorders. Dr. Zamir has held a variety of leadership roles in the local community, including as a Clinical Assistant Professor at Rutgers RWJ Medical School and as President of the Medical Staff at RWJ University Hospital Hamilton.
Please note that Maniya Health Medical Group does not employ or in any way supervise Dr. Zafar Zamir, MD. He is employed by Hamilton Gastroenterology. Patients should contact Hamilton GI's offices directly for all questions concerning their GI treatment.
Zafar Zamir, MD
Gastroenterologist
1078 White Horse Avenue
Hamilton, NJ 08610
