Find a Top Gastroenterologist Near Me in Brooklyn, NY – Book an Appointment Instantly

I practice traditional Mt. Sinai trained medicine, with a great appreciation for Integrative and alternative approaches. I look for the latest high-tech approaches including genetic testing, neurocognitive screening, and testing with ‘liquid biopsies’ by a blood test that picks up very early cancers.

I am very open to questions, and I have many years of extensive relationships with excellent subspecialists in various hospitals around the city.

With Elsa, my amazingly competent ‘right hand’, I am available by text when you have a sudden medical concern, when you need lab or X-ray results quickly, a medication refill, an appointment or timing issue, a Covid or booster question, or a question about medication in the news that might pertain to your health.

Elsa Manelli is the heart and soul of the concierge practice. Primary contact person and office manager. Elsa receives and responds to texts and calls reliably, compassionately, and supports me, Stacy, and my patients in a caring and timely fashion. She has trained Allison and Cintia, my office staff, to be equally caring and responsive. Treat them all well, please!

I want to work with patients who appreciate collaboration! ‘You and me versus the issue at hand’.

And I am fortunate to work alongside a wonderful physician assistant with 15 years of experience named Stacy Beaupre who is very involved in integrative care and will be helping me evaluate neurocognitive function. She too is available and on-call.

I can only take a limited number of new concierge patients and I welcome a scheduled five-minute phone conversation where we can see if we are a good fit for one another.

Dr. Blair Lewis is a well-respected and experienced New York City gastroenterologist providing care for all sorts of gastrointestinal diseases and conditions at his private practice on Manhattan's Upper East Side. As a board-certified gastroenterologist with more than 72 scientific papers, 25 book chapters and three books to his credit, Dr. Lewis is skilled in a wide array of procedures and treatments aimed at diagnosing and treating GI issues, including endoscopy, colonoscopy, capsule endoscopy and colon cancer screening, as well as the care and management of diseases and conditions like gastroesophageal reflux disease (GERD), colonic polyps and inflammatory bowel disease (IBD). He is considered to be one of the world's leading experts in endoscopy and is widely considered to be the “father” of the capsule endoscopy technique, having served as the primary investigator of several early clinical trials.

Dr. Lewis received his M.D. From Albert Einstein College of Medicine, performing his residency in internal medicine at Montefiore Medical Center and a fellowship in internal medicine at Mount Sinai Hospital. In addition to his private practice, Dr. Lewis holds a faculty appointment at Mount Sinai Hospital and is a clinical professor of medicine at the Icahn School of Medicine at Mount Sinai. Named one of New York City's 100 best doctors, Dr. Lewis has been featured on CNN, NBC and CBS Nightly Newscasts, ABC’s 20/20, and NBC’s The Today Show.

Dr. Lewis also chaired the annual International Conference of Capsule Endoscopy, and he is past president of the New York Society for Gastrointestinal Endoscopy and the New York Academy of Gastroenterology. He teaches courses in capsule endoscopy nationally and internationally.

Committed to providing each patient with the information he or she needs to make educated, informed treatment decisions, Dr. Lewis offers one-on-one gastroenterology consultations to provide information about care, answer questions and address concerns. Each plan of treatment is carefully developed, taking multiple factors into account to ensure the best possible outcome based on every patient's unique medical needs and overall health.

Dr. Lewis welcomes new patients, and his practice accepts most major forms of medical insurance.

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.

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.

The Heart Center of the Oranges, PA, is a medical practice with multiple locations: West Orange, East Orange, South Orange, Maplewood, Newark, Belleville, Bloomfield, Nutley & Livingston, New Jersey. Led by a skilled team of physicians, nurses, and other medical professionals, the practice serves people aged 20 and older in person and virtually via telemedicine.

The Heart Center of the Oranges, PA, offers specialty services, including cardiology, endocrinology, gynecology, internal medicine, neurology, podiatry, pulmonology, women’s wellness, pediatric endocrinology, nutrition, and sleep medicine. Patients with chronic diseases or general medicine concerns can turn to the highly trained experts at The Heart Center of the Oranges, PA, for superior care.

The skilled medical team personalizes each treatment plan based on a patient’s medical needs, lifestyle, and desired outcomes.

Those with diabetes, foot or ankle issues, gynecology concerns, or heart, kidney, or lung diseases rely on The Heart Center of the Oranges, PA, for exceptional care in a welcoming setting. Undergoing routine care reduces the risk of bothersome symptoms and severe medical complications. 

The Heart Center of the Oranges, PA, team is friendly, providing top-notch patient-centered care using the latest advances in technology and research-backed treatments. They compassionately welcome new and existing patients to the practice.

Schedule an in-person or telehealth appointment at The Heart Center of the Oranges, PA, by phone or online today.

Welcome To Our Practice

Maria Lufrano, MD, is a specialist in the field of gastroenterology and hepatology. At her practice – ML Gastroenterology in Bronxville, New York – she treats disorders of the digestive system, including gastroesophageal reflux disease (GERD), irritable bowel syndrome (IBS), colitis, functional disorders of the gut, and liver disease on a daily basis. 

Dr. Lufrano grew up in Westchester County and graduated from New York University with a Bachelor of Arts in journalism as well a minor in biology and chemistry. She then pursued a Master in Science from New York Medical College in biochemistry and molecular biology. During her post-graduate training, she focused on breast cancer research. Maria continued to be interested in medicine and research and decided to pursue a degree in medicine. In 2002 she graduated from New York College of Osteopathic Medicine. She completed her residency in internal medicine and fellowship in gastroenterology and hepatology at North Shore University Hospital – Long Island Jewish Medical Center in Long Island in 2012. 

She has remained actively involved in research throughout her career and has published several scientific papers and presented at national scientific meetings. She is double board-certified in gastroenterology and internal medicine.

Dr. Lufrano is committed to the highest level of patient care. She employs the latest technology to provide an individualized approach to patient medical needs. Her primary focus is preventive and integrative medicine as well as conventional medicine. She has incorporated the effects of nutrition and diet into the treatment plans of her patients. She understands the importance of treating the body as a whole and the positive impact of treating ailments using an integrative approach. In addition to conventional therapies, she offers nutrigenomics, micronutrient testing, evaluation of the microbiome, and personalized anti-inflammatory dietary plans for patients with IBS, leaky gut, gastroesophageal reflux disease, and dyspepsia. She also has developed an anti-inflammatory weight loss program for her patients. 

At ML Gastroenterology, she also helps identify the underlying cause of common gastrointestinal symptoms like abdominal pain and bloating. Dr. Lufrano and the team also perform endoscopy and colonoscopy procedures to evaluate the gastrointestinal tract and colon cancer screenings for those that need them. 

She is currently an attending physician at New York-Presbyterian Lawrence hospital and St. John’s Riverside Hospital – Dobbs Ferry Pavilion. She holds professional membership in several national societies, including the American College of Gastroenterology and the American Medical Association. She also plays an active role in multiple societies in her community. 

To schedule an appointment with Dr. Lufrano and the team at ML Gastroenterology, call the office or use the online booking tool today. 

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.

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. Christopher Chum, a board-certified Gastroenterologist, is deeply committed to enhancing the health and well-being of his community. Having earned his medical degree from the NYIT College of Osteopathic Medicine, Dr. Chum completed his residency at Coney Island Hospital, followed by a fellowship in General and Advanced Gastroenterology at the same institution. There, he served as Assistant Program Director and Director of Advanced Endoscopy for a prominent academic program dedicated to training the next generation of gastroenterologists and medical residents.

Renowned for his compassionate and patient-centered approach, Dr. Chum has consistently delivered cutting-edge care to a diverse patient population, including underserved communities.

While maintaining his academic affiliations at Coney Island Hospital, he has relocated to New Jersey with his family. Here, he extends his expertise to the Hamilton community, providing exceptional care and improving access to healthcare for all.

Dr. Chum specializes in advanced interventional endoscopy and offers comprehensive care across the spectrum of gastroenterology and hepatology. His clinical interests encompass biliary and pancreatic disorders, cancer prevention, gastrointestinal oncology, and the burgeoning fields of fatty liver disease, obesity, with non-surgical medical and endoscopic weight loss options.

Please note that Maniya Health Medical Group does not employ or in any way supervise Dr. Christopher Chum, DO. He is employed by Hamilton Gastroenterology. Patients should contact Hamilton GI's offices directly for all questions concerning their GI treatment.

Christopher Tomaino, MD, a board-certified gastroenterologist at East Coast Gastroenterology and Endoscopy, offers comprehensive care for a variety of gastrointestinal symptoms and disorders. Located in Patchogue, New York, the practice has the latest advancements in diagnostic testing to quickly find the root cause of symptoms like abdominal pain, bloating, persistent diarrhea, and chronic constipation. 

Earning his medical degree from the American University of the Caribbean School of Medicine in  St. Maarten, Dr. Tomaino went on to complete his residency and fellowship in both internal medicine and gastroenterology at the Icahn School of Medicine at Mount Sinai, Elmhurst New York. He is board-certified in both internal medicine and gastroenterology by the American Board of Internal Medicine. 

Dr. Tomaino specializes in creating customized treatment plans to address individual patient needs and uses the latest technologies to perform colonoscopy and upper endoscopy. In addition to diagnosing the cause of unexplained symptoms, Dr. Tomaino can address acute and chronic gastrointestinal disorders like acid reflux, Crohn’s disease, ulcerative colitis, and diverticulitis. 

East Coast Gastroenterology and Endoscopy also offers comprehensive services to treat painful hemorrhoids using minimally invasive techniques. Dr. Tomaino can also diagnose all stages of liver disease. He customizes a treatment plan to manage the condition in the long-term and reduce risk factors for complications like liver failure.

To learn more about the available diagnostic technologies and treatment options available for gastrointestinal conditions, call East Coast Gastroenterology and Endoscopy to schedule an appointment or book one online today.

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.