Board- certified in gastroenterology and hepatology, Dr. McDonough earned his medical degree from the University of Missouri-Columbia School of Medicine. He completed an internal medicine residency at Washington University School of Medicine, Barnes-Jewish Hospital, and fellowships in gastroenterology and hepatology at the University of Virginia in Charlottesville, VA. During his fellowship training, he participated in the Rural Area Medical Outreach program providing colorectal cancer screening to the underserved population in southwestern Virginia. On staff at DePaul Hospital for more than 10 years, Dr. McDonough serves as medical director of the Hepatitis C Clinic. A member of the American College of Gastroenterology and the American Gastroenterology Association, he has authored several articles for medical publications and has received numerous honors and awards, including the DePaul Hospital Compassion Award. Dr. Mcdonough is highly rated in 18 conditions, according to our data. His top areas of expertise are Gastroesophageal Reflux Disease (GERD), Ascites, Painful Swallowing, Gastrostomy, and Gastrectomy.

Dr. Y.A. Ghouri is a gastroenterologist who treats patients ages 18 and older. His specialties include inflammatory bowel disease (IBD), endoscopic therapy, irritable bowel syndrome (IBS), and the gut microbiome. He also diagnoses and treats various gastrointestinal conditions such as ulcers, constipation, nausea, ulcerative colitis (UC), noninfectious gastroenteritis, and Crohn's disease. Dr. Ghouri is renowned for providing quality, compassionate medical care to his patients, which is further highlighted by his friendly bedside manner, attention-to-detail, responsiveness, and patience. He takes his time, listening to his patients and then explaining the appropriate treatment recommendations, which are tailored to their specific needs. He works to ensure a patient's gastrointestinal condition doesn't completely take over or disrupt his or her daily activities. An expert in gastroenterology, Dr. Ghouri has been widely published in various medical journals on topics such as IBD, IBS, UC, GI tumors, and Crohn's disease. Dr. Ghouri is highly rated in 10 conditions, according to our data. His top areas of expertise are Gastrointestinal Bleeding, Crohn's Disease, Familial Colorectal Cancer, Endoscopy, and Colonoscopy.

Leonard Weinstock is a Gastroenterologist in Saint Louis, Missouri. Dr. Weinstock is highly rated in 37 conditions, according to our data. His top areas of expertise are Mast Cell Activation Syndrome (MCAS), Small Bowel Bacterial Overgrowth, Irritable Bowel Syndrome (IBS), Endoscopy, and Colonoscopy.

Raymond Mohrman is a Gastroenterologist in Bridgeton, Missouri. Dr. Mohrman is highly rated in 4 conditions, according to our data. His top areas of expertise are Morning Sickness, Irritable Bowel Syndrome (IBS), Swallowing Difficulty, Gastrostomy, and Gastrectomy.

Dr. Marcu is board certified in gastroenterology as well as in internal medicine. He earned his medical degree from University of Medicine and Pharmacy - Bucharest and Carol Davila School of Medicine in Romania. Dr. Marcu received his residency training at Saint Louis University Hospital, where he also completed his gastroenterology fellowship. He has been in practice since 1999. Dr. Marcu provides the following procedures including, but not limited to colonoscopy, EGD, ERCP, flex sig, liver biopsy, paracentesis, Remicade infusion, small bowel endoscopy, percutaneous endoscopic gastrostomy, and colon with banding of internal hemorroids. He has a special interest in advanced endoscopy. He is on staff at SSM Health St. Joseph Hospital - St. Charles. Dr. Marcu is highly rated in 20 conditions, according to our data. His top areas of expertise are Benign Esophageal Stricture, Lower Esophageal Ring, Menetrier Disease, Gastrectomy, and Colonoscopy.

Dr. Richard Geisman is a gastroenterologist who treats patients ages 18 and older. His specialties include general gastroenterology; colon cancer prevention; Crohn's disease; ulcerative colitis; inflammatory bowel disease (IBD); gastroesophageal reflux disease (GERD); and acid reflux. He also performs colonoscopies and upper gastrointestinal endoscopies. Dr. Geisman provides quality, compassionate medical care to his patients, who appreciate how professional, attentive, and personable he is. He takes his time to listen and provides them with a thorough explanation and guidance on treatment and next steps. His mission is to help his patients achieve the best overall health possible. Dr. Geisman is a fellow with the American Gastroenterological Association and a member of the American Society Gastrointestinal Endoscopy. Fun fact: Dr. Geisman's hobbies include exercise, reading, golf, bicycling, and traveling. Dr. Geisman is highly rated in 15 conditions, according to our data. His top areas of expertise are Diverticular Disease, Esophagitis, Turcot Syndrome, Endoscopy, and Colonoscopy.

Board-certified gastroenterologist Richard Riegel, MD, sees patients at Gateway Gastroenterology in Chesterfield, Missouri. He strives to provide unparalleled care aimed at improving the digestive health of his patients.A native of St. Louis, Dr. Riegel graduated with honors from the University of Missouri-Columbia School of Medicine. He then completed both his Internal Medicine internship and residency at Vanderbilt University in Nashville, Tennessee. From Vanderbilt, Dr. Riegel returned to St. Louis to complete three additional years of medical training in the Division of Gastroenterology/Hepatology at Saint Louis University.Dr. Riegel is an active member of the American College of Gastroenterology and the American Gastroenterological Association.Dr. Riegel has participated in the education and training of medical house staff at St. John’s Mercy Medical Center. He has a diverse practice specializing in all aspects of general gastroenterology, hepatology, and endoscopic procedures. He has been in private practice since 1997. He is married with three wonderful children. Dr. Riegel is highly rated in 1 condition, according to our data. His top areas of expertise are Heartburn, Swallowing Difficulty, Painful Swallowing, Endoscopy, and Gastrectomy.

Sajid Zafar is a Gastroenterologist in Chesterfield, Missouri. Dr. Zafar is highly rated in 39 conditions, according to our data. His top areas of expertise are Hereditary Pancreatitis, Acute Pancreatitis, Familial Adenomatous Polyposis, Gastrectomy, and Endoscopy. Dr. Zafar is currently accepting new patients.

Kevin Korenblat is a Gastroenterologist in Saint Louis, Missouri. Dr. Korenblat is highly rated in 25 conditions, according to our data. His top areas of expertise are Hepatitis, Visceromegaly, Hepatitis C, Endoscopy, and Liver Transplant.

Erik Thyssen is a Gastroenterologist in Saint Louis, Missouri. Dr. Thyssen is highly rated in 25 conditions, according to our data. His top areas of expertise are Gastric Dysmotility, Crohn's Disease, Familial Adenomatous Polyposis, Endoscopy, and Gastrectomy.

Paul King is a Gastroenterologist in Saint Louis, Missouri. Dr. King is highly rated in 25 conditions, according to our data. His top areas of expertise are Angiodysplasia of the Colon, Gastrointestinal Bleeding, Acute Pancreatitis, Endoscopy, and Gastrostomy.

Marc Bernstein is a Gastroenterologist in Saint Louis, Missouri. Dr. Bernstein is highly rated in 22 conditions, according to our data. His top areas of expertise are Progressive Familial Intrahepatic Cholestasis Type 2, Progressive Familial Intrahepatic Cholestasis Type 1, Enlarged Liver, Gastrectomy, and Endoscopy.

Kishore Maganty is a Gastroenterologist in St. Louis, Missouri. Dr. Maganty is highly rated in 21 conditions, according to our data. His top areas of expertise are Childhood Pancreatitis, Familial Pancreatic Cancer, Pancreatic Cancer, Gastrectomy, and Endoscopy.

David Ulrich is a Gastroenterologist in Saint Louis, Missouri. Dr. Ulrich is highly rated in 21 conditions, according to our data. His top areas of expertise are Bile Duct Obstruction, Bile Duct Stricture, Cholestasis, Endoscopy, and Pancreatectomy.

Koushik Das is a Gastroenterologist in Creve Coeur, Missouri. Dr. Das is highly rated in 19 conditions, according to our data. His top areas of expertise are Pancreatic Cancer, Jaundice, Bile Duct Obstruction, Endoscopy, and Colonoscopy.

Roshani Desai is a Gastroenterologist in Saint Louis, Missouri. Dr. Desai is highly rated in 15 conditions, according to our data. Her top areas of expertise are Alcoholic Cirrhosis, Visceromegaly, Cirrhosis, Endoscopy, and Colonoscopy.

Elie Chahla is a Gastroenterologist in Chesterfield, Missouri. Dr. Chahla is highly rated in 12 conditions, according to our data. His top areas of expertise are Macroamylasemia, Gastrointestinal Bleeding, Hereditary Pancreatitis, Colonoscopy, and Endoscopy.

Eldad Bialecki is a Gastroenterologist in Bridgeton, Missouri. Dr. Bialecki is highly rated in 6 conditions, according to our data. His top areas of expertise are Gastrointestinal Bleeding, Familial Adenomatous Polyposis, Ascites, Gastrectomy, and Gastrostomy.

Robyn Haithcock is a Gastroenterologist in Bridgeton, Missouri. Dr. Haithcock is highly rated in 4 conditions, according to our data. His top areas of expertise are Esophagitis, Benign Esophageal Stricture, Lower Esophageal Ring, Gastrectomy, and Colonoscopy.

Nicole Shen is a Gastroenterologist in Bridgeton, Missouri. Dr. Shen is highly rated in 3 conditions, according to our data. Her top areas of expertise are Ascites, Spontaneous Bacterial Peritonitis, Pseudomembranous Colitis, Liver Transplant, and Gastrectomy.

Richard Rood is a Gastroenterologist in Creve Coeur, Missouri. Dr. Rood is highly rated in 3 conditions, according to our data. His top areas of expertise are Crohn's Disease, Ulcerative Colitis, Colitis, Colonoscopy, and Endoscopy.

"Hani El-Halawany, MD, is a board-certified gastroenterologist. He graduated from Saba University School of Medicine and completed his residency at the University of Missouri - Kansas City School of Medicine. After completing his residency, Dr. El-Halawany has completed three fellowships. The first in gastroenterology from the University of Missouri - Kansas City School of Medicine. The second in hepatology and liver transplantation from Temple University Hospital and a third in advanced interventional endoscopy from the Carolinas Medical Center in Charlotte, NC. In his free time, Dr. El-Halawany enjoys spending time with his family, traveling and trying new foods. He is also fluent in Arabic. ""My mission as an interventional gastroenterologist is to educate and manage patients with complex biliary, pancreatic and gastrointestinal disease. With the ability to utilize advanced endoscopic techniques, I aim to provide an alternative and many times less invasive approach to surgical interventions whenever possible."" - Hani El-Halawany, MD". His top areas of expertise are Familial Adenomatous Polyposis, Gardner Syndrome, Painful Swallowing, Swallowing Difficulty, and Endoscopy.

Brent Neuschwander is an Internal Medicine specialist and a Hepatologist in St. Louis, Missouri. Dr. Neuschwander is highly rated in 15 conditions, according to our data. His top areas of expertise are Nonalcoholic Steatohepatitis (NASH), Hepatitis, Autoimmune Hepatitis, Endoscopy, and Hemorrhoidectomy.

Jeffrey Mathews, MD, is committed to providing his patients with a wide range of gastroenterology services in a compassionate and timely manner at Gateway Gastroenterology, in Chesterfield, Missouri. He is board-certified in gastroenterology and hepatology.Dr. Mathews is a life-long St. Louisan. He attended the University of Missouri – Kansas City Six-Year Medical School Program before going on to complete his fellowship in gastroenterology and hepatology at St. Louis University.Making every effort to stay up-to-date on the latest advancements in his field, Dr. Mathews maintains active memberships with the American Society of Gastrointestinal Endoscopy and the American College of Gastroenterology.At Gateway Gastroenterology, Dr. Mathews designs treatment plans unique to his patients' needs and concerns. He takes time to clearly communicate his treatment recommendations and encourages them to play an active role in their health care. Dr. Mathews is highly rated in 6 conditions, according to our data. His top areas of expertise are Painful Swallowing, Swallowing Difficulty, Barrett Esophagus, Gastrectomy, and Endoscopy.

Jason Haas, D.O. is dedicated to providing the highest quality of care to all his patients. He has strong communication skills which allow him to connect with patients, staff and colleagues. For the past eight years, Dr. Haas has been a gastroenterologist practicing in Springfield, Missouri with Cox Medical Clinic. He is a board-certified gastroenterologist that completed his GI Fellowship training at Aurora Health Care in Milwaukee, WI and his Internal Medicine Residency at Gundersen Health Care in LaCrosse, WI. His wife is from. St. Louis, and in their spare time Dr. Haas enjoys traveling with her and their two daughters. Dr. Haas has been a member of the Colorectal Awareness Party in Springfield, which helps raise money and provide free colonoscopy evaluations for patients in need. Dr. Haas is highly rated in 5 conditions, according to our data. His top areas of expertise are Gastrointestinal Bleeding, Painful Swallowing, Swallowing Difficulty, Endoscopy, and Gastrectomy.