Cardiologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Chiropractor providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Dentist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Dermatologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Family Physician providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
OB-GYN providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Ophthalmologist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Orthopedic Surgeon providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Pediatrician providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Physical Therapist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Podiatrist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Psychiatrist providers include doctors, nurses, nurse practitioners, and physician assistants. They often maintain long-term relationships with you and advise and treat you on a range of health related issues.
Gil I. Ascunce, MD, is a board-certified gastroenterologist in New York City who treats patients from his main office in Manhattan on Madison Avenue, as well as in several non-profit community healthcare centers throughout the city. Dr. Ascunce has expertise in a wide range of gastrointestinal disorders and conditions including acid reflux, abdominal pain, constipation, and diarrhea. He also has special expertise in pancreatic diseases, removing large polyps, and Barrett's esophagus. He was born in Virginia to Cuban and Spanish immigrants, and he has native fluency in both Spanish and English.
Dr. Ascunce completed his undergraduate and graduate studies at Georgetown University in Washington, D.C. At Georgetown, he excelled in academics and was also a decorated varsity athlete for the Hoyas’ Big East championship soccer team. After completing his undergraduate studies, Dr. Ascunce went on to earn a Master of Science in Physiology and Biophysics and then also earned his medical degree at the Georgetown University School of Medicine, where he graduated with honors.
Dr. Ascunce then moved to New York for a residency in Internal Medicine at New York-Presbyterian Hospital-Weill Cornell Medical Center in Manhattan. After residency, he continued his medical education and completed a fellowship in Gastroenterology at the University of Miami/Jackson Memorial Hospital in South Florida. While training in gastroenterology, Dr. Ascunce developed a special interest in advanced endoscopic procedures. Finally, he returned to New York for an additional year of specialized training with an advanced therapeutic endoscopy fellowship at Beth Israel Medical Center in Manhattan. While he was once a full-time interventional endoscopist and in academic practice, his current practice emphasis is to treat and educate his patients and their community for all gastrointestinal diseases.
Dr. Ascunce is an Assistant Clinical Professor of Medicine at the Icahn School of Medicine at Mount Sinai, and he teaches medical residents and gastroenterologists-in-training at Mount Sinai Beth Israel Medical Center. Dr. Ascunce has engaged in various research projects including basic science research, clinical pharmacology, and clinical research. He has published papers in several major gastroenterology journals and he has presented his research at several national conferences.
Moushumi Sanghavi, MD, is board certified in both internal medicine and gastroenterology. At Gastroenterology on Gramercy Park in New York City, she treats all aspects of gastrointestinal and liver disease, but she has a special interest in irritable bowel syndrome and inflammatory bowel disease. She is also a partner of East Side Endoscopy, a nearby state-of-the-art ambulatory surgical center. Dr. Sanghavi is one of a few female gastroenterologists in New York City, and she has considerable experience treating diseases predominantly affecting women. She performs diagnostic and therapeutic upper endoscopy and colonoscopy procedures and noninvasively treats internal hemorrhoids with infrared coagulation and endoscopic banding. Dr. Sanghavi received her bachelor of arts degree from Yale University in New Haven, Connecticut. She attended medical school at New York University School of Medicine and completed her internal medicine residency at The Mount Sinai Hospital in New York City. She went on to complete her fellowship in gastroenterology training at Montefiore Medical Center in New York City. She is a member of the American College of Gastroenterology, the American Gastroenterological Association and the American Society of Gastrointestinal Endoscopy. She is affiliated with Mt. Sinai Beth Israel in New York City. Dr. Sanghavi speaks English and Spanish.
Dr. Hon-Ming Eng, MD is a board certified gastroenterologist practicing at Greater New York Gastroenterology, located in the Flatiron district of New York City. Since the practice opened in 2004, Dr. Eng and his colleagues have provided a variety of services including treatments for acid reflux, hepatitis, Irritable Bowel Syndrome (IBS), and Crohn’s Disease. Screening procedures like colonoscopies and endoscopies to accurately diagnose conditions like colon cancer are also available.
Dr. Eng completed his medical degree at the State University of New York – Down State Medical Center and served his internship and residency at Boston City Hospital and Mt. Sinai Medical Center. Dr. Eng also participated in a three-year fellowship in Gastroenterology at Thomas Jefferson University Hospital.
Patients benefit from Dr. Eng’s years of experience and dedication to providing the highest quality care to his patients. He and his colleagues specialize in diagnosing and treatments of conditions of the digestive tract. They specialize in colon cancer screening and acid reflux disorders as well as a variety of other stomach and liver diseases. They help patients to improve and maintain good digestive health. Dr. Eng aims to treat every patient with the greatest respect and endeavors to ensure they receive the highest possible quality care.
Dr. Eng and Greater New York Gastroenterology are currently welcoming new patients and accept most major forms of insurance and Medicare.
Dr. Boris Chusid is a gastroenterology specialist with over 30 years of experience in his profession. He earned his medical degree from Brown University School of Medicine in 1991 and completed his residency at Lenox Hill Hospital in 1998. Dr. Chusid’s clinical expertise is vast, with specific emphasis on the following gastrointestinal diseases and disorders:
Diarrhea
Gastroesophageal reflux disease (GERD)
Hemorrhoids
Hepatitis
Inflammatory bowel disease (IBD)
Dr. Chusid’s passion for helping his patients find the best health outcomes resulted in him performing over 35,000 endoscopic procedures over the course of his career. Dr. Chusid specializes in the following gastrointestinal procedures:
Dr. Chusid uses the most advanced diagnostic techniques and minimally invasive methods to achieve the best possible results for each of his patients. Dr. Chusid is fluent in Russian and has some fluency in Spanish, allowing him to treat and help patients from a variety of backgrounds.
Board-certified gastroenterologist and internal medicine practitioner Todd B. Linden, MD, FACP, brings years of expertise and hands-on experience to his self-titled practice in New York City. Located in the Soho neighborhood of Manhattan, he diagnoses and treats both acute and chronic health conditions, some of which include acid reflux, hemorrhoids, Crohn’s disease, and gastrointestinal and colon cancer.
Dr. Linden holds a medical degree from the prestigious Vagelos College of Physicians and Surgeons at Columbia University in New York. He completed his residency in internal medicine at New York-Presbyterian Hospital and completed a fellowship in gastroenterology at the Icahn School of Medicine at Mount Sinai, both in New York.
Today Dr. Linden’s practice offers comprehensive diagnostics and the latest treatments for a variety of conditions like irritable bowel syndrome, diverticular disease, hemorrhoids, and more. He values the time he spends with his patients and devotes a part of each appointment to get to know them personally. Patients can feel confident that Dr. Linden is always listening and taking their needs into account when developing treatment plans.
Dr. Linden ensures that his patients receive expert medical services whenever they need it. The practice has convenient office hours and an efficient, friendly support staff that can help set up appointments that are best suited to a patient's busy schedule.
Call the office or use the online booking tool to schedule an appointment at Todd B. Linden MD FACP, today.
Murray Orbuch, MD, is a board-certified gastroenterologist with more than 25 years of experience providing expert care at his New York City practice. With two convenient locations in SoHo and the Financial district, Dr. Orbuch is committed to providing his patients with the best possible care, spending unhurried time to fully and accurately diagnose the problem.
In addition to managing general gastroenterology needs, Dr. Orbuch also specializes in Crohn’s disease, ulcerative colitis, irritable bowel syndrome, and Celiac sprue, as well as gastrointestinal endoscopy and colonoscopy procedures. Through his affiliation with the world-class Mount Sinai Medical Center, he is able to provide timely access to the best and latest medical technology, along with other specialty care when needed.
After earning his undergraduate degree, Dr. Orbuch pursued his Doctor of Medicine at the State University of New York-Downstate College of Medicine. He completed his internship and residency at New York University Medical Center and his fellowship in gastroenterology at Georgetown University Medical Center in Washington DC, and The National Institutes of Health in Bethesda, Maryland.
Dr. Orbuch is dedicated to his career and has authored 16 scholarly papers and book chapters and is currently an Assistant Professor of Gastroenterology at The Mount Sinai Medical School.
Recognized and respected by his patients and peers, he has been continuously voted one of New York City-Metro SuperDoctors® (2010 - 2025), and named to the prestigious Castle-Connolly America’s Top Doctors® directory (2015 -2025).
Outside of the office, Dr. Orbuch is an avid photographer and wine connoisseur. He’s also conversant in four languages: English, Hebrew, Romanian.
Dr. Nancy Lau graduated Magna Cum Laude with a M.D. degree from SUNY Health Science Center at Brooklyn. She has been a Clinical Assistant Attending in Gastroenterology at Memorial Sloan-Kettering Cancer Center, and at St. Vincent's Medical Center.
Dr. Nancy Lau received her BA at Barnard College, Columbia University. Before becoming a physician, she performed research at the Sloan-Kettering Institute. As a staff physician at Memorial Sloan-Kettering Cancer Center, she authored a research grant for clinical research. She has been widely published in peer-reviewed medical journals. In addition to research, Dr. Lau was an instructor, leading Problem-Based Learning groups for medical students at the Cornell Medical School. She was co-director of the Gastroenterology fellowship program at St. Vincent's Medical Center in Manhattan, and has trained many gastroenterology fellows.
Dr. Lau completed her internship at Cornell Weill Medical Center, and residency at Mount Sinai Medical Center, in New York, followed by a gastroenterology fellowship at Columbia University’s St. Luke’s Roosevelt Medical Center, and a liver fellowship at the Mount Sinai Recanati Liver Diseases and Transplantation Center. She has been named Fellow of the American Gastroenterology Association, and is a member of the Alpha-Omega-Alpha medical honor society. She is the recipient of the prestigious American Medical Women's Association Janet M. Glasgow Achievement Award.
She brings extensive experience to her practice in a modern, upscale, fully AAAASF certified office-based surgery suite. AAAASF accreditation means that her procedure surgery suite meets all safety and health standards as required, and is in full compliance with local, state, and federal regulations. She holds active hospital privileges at NYU Langone Medical Center.
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.
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.
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.
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 toconventional therapies, sheoffers 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.
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.
Arthur Walczyk, MD, FACG, is a board-certified gastroenterologist with the gastroenterology team at Northern Medical Group Gastroenterology Division, formerly known as The Digestive Disease Center of the Hudson Valley. He is dedicated to the treatment and prevention of diseases and disorders of the digestive tract to patients in Fishkill, Poughkeepsie, and Highland, New York.
Dr. Walczyk is a known expert in performing colonoscopy, upper GI endoscopy (EGD), endoscopic ultrasound (EUS), endoscopic retrograde cholangiopancreatography (ERCP) and the removal of bile duct stones, and hemorrhoidal banding. He also specializes in treating biliary disease, ulcerative colitis, Crohn’s disease, and hepatitis C.
He earned his medical degree at St. George’s University School of Medicine in Grenada, West Indies. Dr. Walczyk then completed his residency training at LaGuardia Hospital (also known as North Shore University Hospital) in Forest Hills, New York. To further his training, Dr. Walczyk also pursued additional fellowships in gastroenterology at The Jamaica Hospital, an affiliate of Cornell University, in New York, and West Virginia University Hospital’s Robert Byrd Health Sciences Center in Morgantown, West Virginia.
Dr. Walczyk is highly regarded in the treatment of conditions, such as acid reflux disease (GERD), diverticulosis, lactose intolerance, Celiac disease, peptic ulcer disease, diarrhea, constipation, and colon cancer. He has admitting privileges at Mid-Hudson Regional Hospital and Vassar Brothers Medical Center in Poughkeepsie, New York, and Hudson Valley Endoscopy Center in Fishkill, New York.
Dr. Walczyk is affiliated with the American Gastroenterology Association and Dutchess County Medical Society, and is a fellow of the American College of Gastroenterology.
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