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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.

I am board certified in Internal Medicine and Gastroenterology. In my free time, I enjoy being outdoors in Fresno’s Mediterranean climate, and playing basketball. I can be spotted in the farmer’s market and am a big supporter of local economy. I also love reading books and being up-to-date on world affairs in addition to spending time with my wife, son and daughters

Pedram J. Enayati, MD, is Co-Director of Gastroenterology Associates of Beverly Hills. He is an expert in the care of gastroenterology patients, and is up to date on the latest treatments and cutting edge technology. As he and his Co-Director, Dr. Omid Shaye, have quickly become the “go-to” doctors for all GI disorders in Beverly Hills, California, Dr. Enayati brings a wealth of experience and knowledge to GABH.

Dr. Enayati has done extensive research on GI disorders, liver diseases, as well as liver/kidney transplantation. He is the author of numerous journal articles and abstracts and has presented on a variety of topics both nationally and internationally. Dr. Enayati is also the recipient of numerous awards, including Solomon Research Honors; Rubenstein Research Honors; and Excellence in Research award was given by the Western Medical Research Committee. He is a member of the American Society of Gastroenterology and Endoscopy; American

Gastroenterology Association; American College of Physicians; American Society of Internal Medicine; California Medical Association; and American Medical Students Association. Dr. Enayati has certifications from The American Board of Internal Medicine and American Board of Gastroenterology.

Dr. Enayati earned his undergraduate at the University of California, Los Angeles where he was Phi Beta Kappa, majoring in neuroscience, and then went on to earn his medical degree at the university’s medical school. He completed his internship and residency in internal medicine at Cedars Sinai Medical Center. He also did a Gastroenterology Fellowship in the Department of Digestive Diseases at UCLA’s David Geffen School of Medicine. Dr. Enayati lives in Los Angeles and is married and has a young daughter. He enjoys biking and hiking.

Dr. Krishna Rayapudi is an experienced gastroenterologist who has worked in all settings, from big cities to rural environments, big group and small group practice, startup practice, and locum tenens. He worked as a Gastroenterologist in 5 different states so far, in addition to training in Kansas and New York City. He provides honest and compassionate care to the Central Ohio Community and particularly to Columbus/Hilliard, Ohio, at Gastro Office.

After earning his medical degree from Guntur Medical College in India (2002), Dr. Rayapudi completed his residency in Internal Medicine at Hofstra Northwell School of Medicine in New York (2009) and a fellowship at the University of Kansas Medical Center (2013). Initially Certified by the American Board of Internal Medicine in 2009. He is also certified by American Board of Internal Medicine (Gastroenterology) in 2013 and American Board of Obesity Medicine in 2023.

Dr. Rayapudi addresses challenging cases with a caring bedside manner. He is the Founder and CEO of astro Office, Hilliard Endo Center and Aliva Weight Loss. The company and his personal motto are the same: Love and Service. He loves dealing with every and any kind of patient and feels competent to handle a variety of gastrointestinal problems. His special interests: weight loss, anorectal disorders, and Barrett's esophagus.

Dr. Rayapudi is married with two beautiful children and is a fan of Via Napoli pizza. When he's not caring for patients at the Gastro Office, Dr. Rayapudi can often be found exploring Columbus, Ohio.

 

Omid A. Shaye, MD, brings a wealth of experience and a vast body of knowledge to Gastroenterology Associates of Beverly Hills. He and his Co-Director Dr. Enayati have quickly become the “go-to” doctors for all GI disorders and related treatments in Beverly Hills, California. A strong patient advocate and supporter of educational outreach, Dr. Shaye encourages all of his patients to learn as much as they can about their specific health condition so that he and the patient can work together as a team.

Dr. Shaye has done extensive research on GI disorders and liver diseases, is the author of numerous journal articles and abstracts and has presented on a variety of topics both nationally and internationally. He is a member of the American Association for the Study of Liver Diseases; American Gastroenterology Association; American Society of Gastrointestinal Endoscopy; California Medical Association; American College of Physicians-American Society of Internal Medicine; and American Medical Association. He has certifications from the American Board of Internal Medicine and the American Board of Gastroenterology.

Dr. Shaye received a Bachelor of Science in Neuroscience from the University of California, Los Angeles with a minor in Education specializing in Community Leadership, and he received his Doctor of Medicine from the University of California, San Diego. Dr. Shaye was named “Gastroenterology Fellow of the Year” at the University of California, Los Angeles, awarded by the David Geffen School of Medicine’s Division of Digestive Diseases. 

He was also the recipient of multiple Leo G. Rigler M.D. Awards for outstanding academic achievement at Cedars-Sinai Medical Center. He completed his internship and residency in internal medicine at Cedars Sinai Medical Center. He also did a Gastroenterology Fellowship in the Department of Digestive Diseases at UCLA’s David Geffen School of Medicine. A resident of Los Angeles for most of his life, Dr. Shaye is married to Kelly and they have four young daughters.

Dr. Abdullah graduated from Damascus University School of Medicine in 1989. Certified with the American Board of Pediatric Gastroenterology and the American Board of Pediatrics since 1995, Dr. Abdullah served his residency in the Medical College of Ohio, and his fellowship in Riley Children’s Hospital and the Indiana University School of Medicine. Dr. Abdullah has provided care to South Puget Sound families since 1998.

Kostas Sideridis, DO, is an osteopathic doctor at Long Island Gastro in Syosset, Long Island, New York. 

Dr. Sideridis earned his degree at the New York Institute of Technology College of Osteopathic Medicine. He then completed his internship at the Wyckoff Heights Medical Center in Brooklyn, New York, and completed his residency at New York University Winthrop Hospital. Dr. Sideridis then went on to complete his fellowship in gastroenterology at the Long Island Jewish Medical Center. After completing his fellowship, Dr. Sideridis helped co-found Long Island Gastro.  

Dr. Sideridis takes the time to listen to patient concerns and discuss the variety of treatment options available. Dr. Sideridis is dedicated to being a partner to patients seeking to improve their overall health. Patients with hepatopancreatobiliary diseases and irritable bowel syndrome have found the relief they need with Dr. Sideridis. He is also a proponent of therapeutic endoscopy to treat a variety of gastrointestinal issues.

For a doctor that cares about patient satisfaction, and offers the best possible treatment, book an appointment online or by phone with Dr. Sideridis.

About Us

John Rivas, MD, is a triple board-certified gastroenterologist and founder of Rivas Digestive Center in Hollywood, Florida. Dr. Rivas and the team are committed to offering comprehensive, patient-centered gastrointestinal care with the highest level of professionalism, quality, and care.

Dr. Rivas graduated with his Bachelor of Arts in biology from the University of Miami in Coral Gables, Florida. He completed his medical degree at Ross University School of Medicine in Dominica, West Indies, graduating with the highest honors. Dr. Rivas returned to Florida to complete his internal medicine residency at the Florida campus of the Cleveland Clinic and was given the Chief Resident Award. 

To further his training, Dr. Rivas completed a fellowship in gastroenterology at Cleveland Clinic Florida, and a subsequent fellowship in advanced transplant hepatology at the Cleveland Clinic in Ohio. After his training, Dr. Rivas returned to Cleveland Clinic Florida, and served as a staff gastroenterologist and transplant hepatologist in the abdominal transplantation department in 2014. 

Rivas Digestive Center is a culmination of Dr. Rivas’ vast experience in gastroenterology and endoscopy. He offers his specialized training and expertise in various areas of gastrointestinal conditions, including celiac disease, GERD, hepatitis, irritable bowel syndrome, and more. Rivas Digestive Center also offers colon cancer screenings and colonoscopies, and the comfort of a team that’s ready to personalize treatment to each patient and their individual needs. As an active researcher and the primary investigator for several large, multi-center research studies, Dr. Rivas is committed to offering his patients the most up-to-date treatment solutions. 

Rivas Digestive Center is honored to be your trusted health partner and the compassionate team is here to serve your every need. Call the office to make an appointment today or book online. 

Jaydeep Kadam, MD, is a board-certified gastroenterologist at Long Island Gastro in Syosset, Long Island, New York. Dr. Kadam majored in public health at John Hopkins University in Baltimore, Maryland. He then went on to earn his medical degree at Ross University School of Medicine. Dr. Kadam later completed his fellowship in gastroenterology at the Long Island Jewish Medical Center in New York.

Dr. Kadam’s vast experience and knowledge of the digestive system have been well documented in countless national publications. He has also been a presenter on gastrointestinal and liver topics on a national level. Currently, Dr. Kadam is a consultant for various pharmaceutical companies as they conduct gastroenterological research. He also serves as the President-elect of the Medical Staff Society at the North Shore University Hospital in Manhasset, New York.  

As a co-founder of Long Island Gastro, Dr. Kadam is involved in assisting patients dealing with various digestive issues. Men and women of various ages have received compassionate and effective treatment for conditions like liver disease, reflux disorders, and heartburn. Dr. Kadam helps many patients prevent colon cancer through regular checkups. His compassionate and understanding approach to patient health ensures that patients receive the care and attention they need from an expert gastroenterologist.

To find relief from digestive issues, book an appointment with Dr. Kadam either online or by calling the office of Long Island Gastro 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.

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.

Lourdes González Bahamonde, DO, is a fellowship-trained gastroenterologist, board certified in internal medicine and medical ethics, providing comprehensive medical care at Center For Digestive Healing in the San Gabriel Valley, and Los Angeles California. She earned a bachelor's degree in psychobiology at UCLA, and a master's in bio-physiology at CSULA before earning her medical degree at New York College of Osteopathic Medicine, NYIT on Long Island. She completed her ACGME training in internal medicine, gastroenterology, hepatology, and nutrition at North Shore University Hospital and Long Island Jewish Medical Center in New York in 2013.

The Center For Digestive Healing was established as an sCorp in 2018. It is fully equipped with the latest diagnostic technologies. She offers comprehensive care through a telemedicine platform, assisting patients from wherever they are. While Dr. Bahamonde specializes in digestive disorders, her practice has evolved toward integrative, preventive, patient-centered care that combines learned principles in internal medicine and GI with osteopathic manipulative medicine in practice.

Over the four years since relocating from NY, she has performed over 7,500 gastric and colorectal cancer screening endoscopies with polypectomies and mucosal resections, as well as advanced disease screenings for chronic liver disease. Dr. Bahamonde emphasizes peer-reviewed understanding of the interrelationship of body, structure, and function, allowing her special insight into treating gut-brain disorders. She has dedicated her life to serving diverse communities through education and cultural competence, recognizing the importance of open communication in shared-decision making.

Dr. Bahamonde continues to inspire future health care leaders as volunteer faculty in clinical medicine, medical ethics, and clinical research. She is dedicated to translational science efforts for youth in STEM programs and students in pre-health professions.

Lourdes González Bahamonde, DO, is a fellowship-trained gastroenterologist, board certified in internal medicine and medical ethics, providing comprehensive medical care at Center For Digestive Healing in the San Gabriel Valley, and Los Angeles California. She earned a bachelor's degree in psychobiology at UCLA, and a master's in bio-physiology at CSULA before earning her medical degree at New York College of Osteopathic Medicine, NYIT on Long Island. She completed her ACGME training in internal medicine, gastroenterology, hepatology, and nutrition at North Shore University Hospital and Long Island Jewish Medical Center in New York in 2013.

The Center For Digestive Healing was established as an sCorp in 2018. It is fully equipped with the latest diagnostic technologies. She offers comprehensive care through a telemedicine platform, assisting patients from wherever they are. While Dr. Bahamonde specializes in digestive disorders, her practice has evolved toward integrative, preventive, patient-centered care that combines learned principles in internal medicine and GI with osteopathic manipulative medicine in practice.

Over the four years since relocating from NY, she has performed over 7,500 gastric and colorectal cancer screening endoscopies with polypectomies and mucosal resections, as well as advanced disease screenings for chronic liver disease. Dr. Bahamonde emphasizes peer-reviewed understanding of the interrelationship of body, structure, and function, allowing her special insight into treating gut-brain disorders. She has dedicated her life to serving diverse communities through education and cultural competence, recognizing the importance of open communication in shared-decision making.

Dr. Bahamonde continues to inspire future health care leaders as volunteer faculty in clinical medicine, medical ethics, and clinical research. She is dedicated to translational science efforts for youth in STEM programs and students in pre-health professions.