The 20 Best Gastroparesis Doctors Near Me in O Fallon, MO
Find the Top Gastroparesis Experts and Specialists
SSM Health Medical Group
Louay Omran, MD, is a board-certified gastroenterologist, and a formally trained advanced endoscopist. He has the ability to perform endoscopic ultrasound (EUS), ERCP, and luminal stenting to relieve obstruction. Dr. Omran is available for the evaluation and management of patients with both common and challenging gastrointestinal disorders. Dr. Omran attended medical school in Syria, and completed internal medicine residencies and two fellowships (geriatric medicine and gastroenterology & hepatology) at Saint Louis University. He also completed a fellowship in advanced endoscopy and pancreatic diseases at the Medical University of South Carolina. He is a board certified physician nutritionist. Before joining SSM Health Medical Group, Dr. Omran practiced gastroenterology and advanced endoscopy at SSM Health Saint Louis University Hospital as a member of SLUCare. For over 15 years, he was a key faculty member participating in the education and training of students, residents and fellows. He won numerous teaching awards in the process. Dr. Omran was elected to become a Fellow of the American College of Physicians. He is also a member of the American Society for Gastrointestinal Endoscopy, the American Gastrointestinal Association, and the American College of Gastroenterology. Dr. Omran is married to Pascale Salam, MD, and has two sons. His hobbies include reading modern history and biographies, trivia, soccer and tennis. Dr. Omran is rated as an Experienced provider by MediFind in the treatment of Gastroparesis. He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Choledocholithiasis, Childhood Pancreatitis, Acute Pancreatitis, Endoscopy, and Colonoscopy. Dr. Omran is board certified in American Board Of Internal Medicine/Gastroenterology , Drug Enforcement Administration , Missouri Dept Of Health/Narcotics&Dangerous Drugs , and Missouri State Board Of Registration.
SSM Health Medical Group
Dr. Hemmersmeier is board certified in family medicine. He completed his residency at Deaconess Hospital - St. Louis after earning his medical degree at Kirksville College of Osteopathic Medicine. Dr. Hemmersmeier has been in practice in O'Fallon, MO since 1998. He has a special interest in sports medicine and has volunteered as a coach in the community and at his church in conjunction with his children's athletic interests. Dr. Hemmersmeier has been awarded recognition from the National Committee for Quality Assurance (NCQA) Diabetes and Stroke Physician Recognition Programs for meeting national standards for diabetes and stroke care. Dr. Hemmersmeier is part of a Patient-Centered Medical Home. Dr. Hemmersmeier uses telehealth services to conduct video office visits with current, established patients for: upper respiratory infection, sore throat, cough, seasonal allergies, skin rashes or lesions, mouth and cold sores, flu symptoms, conjunctivitis, UTI, gout, yeast infection and travel medication. A forward-facing camera and internet access are required, and a tablet or computer/laptop may be used. Telehealth appointments can be scheduled online through MyChart. Dr. Hemmersmeier is rated as an Experienced provider by MediFind in the treatment of Gastroparesis. He is also highly rated in 14 other conditions, according to our data. His clinical expertise encompasses Familial Hypertension, Coronary Heart Disease, Sacroiliac Joint Disease, and Hypothyroidism. Dr. Hemmersmeier is board certified in American Board Of Family Medicine , Drug Enforcement Administration , Missouri Dept Of Health/Narcotics&Dangerous Drugs , and Missouri State Board Of Registration.
SSM Health Medical Group
Dr. VanGundy is board certified in family medicine. He completed his internship at Genesis Education Foundation-University of Iowa and then completed his residency at the Quad Cities Practice Program. Dr. VanGundy earned his medical degree from the University of Iowa Carver College of Medicine in Iowa City. He has been practicing in St. Charles County since 2001 and has been with SSM since 2003. Dr. VanGundy has a special medical interest in sports medicine and pediatrics. Dr. VanGundy uses telehealth services to conduct video office visits with current, established patients for: upper respiratory infection, sore throat, cough, seasonal allergies, skin rashes or lesions, mouth and cold sores, flu symptoms, conjunctivitis, UTI, gout, yeast infection and travel medication. A forward-facing camera and internet access are required, and a tablet or computer/laptop may be used. Telehealth appointments can be scheduled online through MyChart. Dr. Vangundy is rated as an Experienced provider by MediFind in the treatment of Gastroparesis. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Type 1 Diabetes (T1D), Childhood Iron Deficiency Anemia, End-Stage Renal Disease (ESRD), and Type 2 Diabetes (T2D). Dr. Vangundy is board certified in American Board Of Family Medicine , Drug Enforcement Administration , Missouri Dept Of Health/Narcotics&Dangerous Drugs , and Missouri State Board Of Registration.
SSM Health Medical Group
Dr. Elizabeth Marsicano is a gastroenterologist who treats patients ages 18 and older. She specializes in treating gastroesophageal reflux disease (GERD); esophageal motility/swallowing issues; chronic constipation; chronic diarrhea; celiac disease; Barrett's esophagus; pelvic floor disorders; inflammatory bowel disease (IBD); metabolic liver disease; hepatitis B/C; hemochromatosis; autoimmune liver disease cirrhosis; and gastrointestinal diseases in pregnancy. She also performs colonoscopies and upper endoscopies. Dr. Marsicano aims to create a collaborative relationship with her patients to ensure optimal management of their gastrointestinal concerns through evidence-based practice, education, and mutual understanding. She works closely with her patients and their families to tailor a treatment plan that meets their specific needs and goals. Dr. Marsicano is a founding member of the Missouri Gastroenterology Society; a member of the American College of Gastroenterology; and a member of the American Neurogastroenterology and Motility Society. Fun fact: Dr. Marsicano enjoys traveling, yoga, and reading in her spare time. Dr. Marsicano is rated as an Experienced provider by MediFind in the treatment of Gastroparesis. She is also highly rated in 1 other condition, according to our data. Her clinical expertise encompasses Ascites, Diverticular Disease, Hemorrhoids, Endoscopy, and Gastrectomy. Dr. Marsicano is board certified in American Board Of Internal Medicine , American Board Of Internal Medicine/Gastroenterology , Drug Enforcement Administration , Missouri Dept Of Health/Narcotics&Dangerous Drugs , and Missouri State Board Of Registration.
SSM Health Medical Group
"Dr. Rodemann is board certified in gastroenterology and board certified in internal medicine. He completed a fellowship at the University of Pittsburgh's Division of Gastroenterology, Hepatology and Nutrition, where he was named chief fellow. Prior to that, Dr. Rodemann was a clinical instructor of medicine at Washington University in St. Louis, where he had completed his internal medicine residency. Dr. Rodemann earned his medical degree at Loyola University in Chicago. In addition to inflammatory bowel disease and screening colonoscopy, Dr. Rodemann's areas of interest include irritable bowel syndrome and biliary disease. His particular skills include esophagogastroduodenoscopy, with treatment of variceal and non-variceal bleeding; colonoscopy, with polypectomy and treatment of bleeding; video pill endoscopy; ERCP; PEG placement; and nasal endoscopy with placement of post-pyloric feeding tubes. He is on staff at SSM Health St. Joseph Hospital - Lake Saint Louis. ""I am drawn to gastroenterology because of the opportunity to treat a variety of diseases involving the GI tract, liver and pancreas. I am particularly interested in inflammatory bowel disease and the impact that screening colonoscopy has on preventing colon cancer. I am excited to bring my special training home to the St. Louis area and feel privileged to take care of patients in St. Charles County.""-Joseph Rodemann, MD". Dr. Rodemann is rated as an Experienced provider by MediFind in the treatment of Gastroparesis. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Morning Sickness, Esophagitis, Painful Swallowing, Endoscopy, and Colonoscopy. Dr. Rodemann is board certified in American Board Of Internal Medicine/Gastroenterology , Drug Enforcement Administration , Missouri Dept Of Health/Narcotics&Dangerous Drugs , and Missouri State Board Of Registration.
SSM Health Medical Group
Dr. Koo is board certified in family medicine. She completed her internship at Deaconess Health System and completed her residency at Forest Park Hospital. Her medical degree was earned at Kirksville College of Osteopathic Medicine. Dr. Koo has a special medical interest in musculoskeletal injuries and preventative medicine. Dr. Koo is rated as an Experienced provider by MediFind in the treatment of Gastroparesis. Her clinical expertise encompasses Nephrosclerosis, Renovascular Hypertension, Osmotic Diuresis, and Sciatica. Dr. Koo is board certified in American Board Of Family Medicine , Drug Enforcement Administration , Missouri Dept Of Health/Narcotics&Dangerous Drugs , and Missouri State Board Of Registration.
SSM Health Medical Group
Dr. Tom Gutmann is board certified in internal medicine and sees patients from age 18 through the senior years. Dr. Gutmann has been in private practice since 1995. He earned his medical degree from Saint Louis University School of Medicine and completed residency at the Medical College of Wisconsin in Milwaukee. Upon completing his training, Dr. Gutmann came back to the St. Louis area, where he practiced in Alton, IL for 12 years and then in St. Louis County for six years before joining SSM Medical Group in 2013. Dr. Gutmann's particular areas of interest include diabetes, sports and exercise. Outside of the office, he enjoys time with his family, and participates in triathlons, water sports and bicycling. Dr. Gutmann is rated as an Experienced provider by MediFind in the treatment of Gastroparesis. He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Transient Familial Hyperbilirubinemia, Thyroid Dysgenesis, Congenital Hypothyroidism, and Newborn Jaundice. Dr. Gutmann is board certified in American Board Of Internal Medicine , Drug Enforcement Administration , Missouri Dept Of Health/Narcotics&Dangerous Drugs , and Missouri State Board Of Registration.
Contemporary Womens Healthcare
Brian Grus is a primary care provider, practicing in Internal Medicine in O Fallon, Missouri. Dr. Grus is rated as an Advanced provider by MediFind in the treatment of Gastroparesis. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Type 2 Diabetes (T2D), Osteomyelitis in Children, Hypothyroidism, and Patulous Eustachian Tube.
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Michael Cleary is a Gastroenterologist practicing medicine in Lake Saint Louis, Missouri. Dr. Cleary is rated as an Experienced provider by MediFind in the treatment of Gastroparesis. He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Gardner Syndrome, Turcot Syndrome, Crohn's Disease, Gastrectomy, and Endoscopy.
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Scott Roos is a primary care provider, practicing in Family Medicine in Lake Saint Louis, Missouri. Dr. Roos is rated as an Experienced provider by MediFind in the treatment of Gastroparesis. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Type 2 Diabetes (T2D), Familial Combined Hyperlipidemia, Xanthoma, and Cirrhosis.
SSM St. Charles Clinic Medical Group Inc.
Donald Binz is a primary care provider, practicing in Family Medicine in Saint Charles, Missouri. Dr. Binz is rated as an Experienced provider by MediFind in the treatment of Gastroparesis. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Type 2 Diabetes (T2D), Glucocorticoid-Remediable Aldosteronism, Hypertension, and Familial Hypertension.
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Tejaswini Nayak is a primary care provider, practicing in Internal Medicine in Saint Charles, Missouri. Dr. Nayak is rated as an Experienced provider by MediFind in the treatment of Gastroparesis. Her clinical expertise encompasses Familial Combined Hyperlipidemia, Xanthoma, Cirrhosis, and High Cholesterol.
Mercy Clinic St Charles County Pediatrics
Charles Coyne is a primary care provider, practicing in Family Medicine in Wentzville, Missouri. Dr. Coyne is rated as an Experienced provider by MediFind in the treatment of Gastroparesis. His clinical expertise encompasses Glucocorticoid-Remediable Aldosteronism, Hypertension, Familial Hypertension, and High Cholesterol.
SSM Health Medical Group
Dr. Kramer is board certified in internal medicine. He earned his medical degree and completed his internship and residency at Saint Louis University. Dr. Kramer has been practicing with SSM Health since 2003. Dr. Kramer is rated as an Experienced provider by MediFind in the treatment of Gastroparesis. He is also highly rated in 49 other conditions, according to our data. His clinical expertise encompasses Lung Metastases, Memory Loss, Coronary Heart Disease, and Anemia. Dr. Kramer is board certified in American Board Of Internal Medicine , Drug Enforcement Administration , Missouri Dept Of Health/Narcotics&Dangerous Drugs , and Missouri State Board Of Registration.
SSM Health Medical Group
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 rated as an Experienced provider by MediFind in the treatment of Gastroparesis. He is also highly rated in 20 other conditions, according to our data. His clinical expertise encompasses Benign Esophageal Stricture, Lower Esophageal Ring, Menetrier Disease, Gastrectomy, and Colonoscopy. Dr. Marcu is board certified in American Board Of Internal Medicine/Gastroenterology , Drug Enforcement Administration , Missouri Dept Of Health/Narcotics&Dangerous Drugs , and Missouri State Board Of Registration.
SSM Health Medical Group
Dr. David Westrich is a gastroenterologist who treats patients ages 18 and older. He diagnoses and treats various gastrointestinal (GI) conditions, including heartburn, acid reflux, swallowing problems, upset stomach, upper abdominal pain, stomach and intestinal ulcers, irritable bowel syndrome (IBS), functional dyspepsia, blood in the stool, chronic constipation, fecal incontinence, and inflammatory bowel disease. He also performs colon cancer screenings, colon polyp removals, upper GI endoscopies, and lower GI colonoscopies. Dr. Westrich provides patients with compassionate care, communicating clearly and honestly, while developing a treatment plan that matches each patient's needs and goals. His patients appreciate that he listens, is very thorough, and takes the time to explain conditions and any proposed treatments. Dr. Westrich is a member of the American Medical Association; American Gastroenterological Association; American College of Gastroenterology; and American Society for Gastrointestinal Endoscopy. Fun fact: Before becoming a doctor, Dr. Westrich wanted to be a math teacher. Dr. Westrich is rated as an Experienced provider by MediFind in the treatment of Gastroparesis. His clinical expertise encompasses Familial Adenomatous Polyposis, Gardner Syndrome, Turcot Syndrome, Irritable Bowel Syndrome (IBS), and Gastrostomy. Dr. Westrich is board certified in American Board Of Internal Medicine , American Board Of Internal Medicine/Gastroenterology , Drug Enforcement Administration , Missouri Dept Of Health/Narcotics&Dangerous Drugs , and Missouri State Board Of Registration.
SSM Health Medical Group
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 rated as an Experienced provider by MediFind in the treatment of Gastroparesis. He is also highly rated in 18 other conditions, according to our data. His clinical expertise encompasses Gastroesophageal Reflux Disease (GERD), Ascites, Swallowing Difficulty, Gastrostomy, and Gastrectomy. Dr. Mcdonough is board certified in Drug Enforcement Administration , Missouri Dept Of Health/Narcotics&Dangerous Drugs , and Missouri State Board Of Registration.
SSM Health Medical Group
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 rated as an Experienced provider by MediFind in the treatment of Gastroparesis. He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Crohn's Disease, Familial Colorectal Cancer, Endoscopy, and Colonoscopy. Dr. Ghouri is board certified in American Board Of Internal Medicine , American Board Of Internal Medicine/Gastroenterology , Drug Enforcement Administration , Missouri Dept Of Health/Narcotics&Dangerous Drugs , and Missouri State Board Of Registration.
SSM Health Medical Group
Martin Walsh is a primary care provider, practicing in Internal Medicine in Saint Charles, Missouri. Dr. Walsh is rated as an Experienced provider by MediFind in the treatment of Gastroparesis. He is also highly rated in 6 other conditions, according to our data. His clinical expertise encompasses Muscle Invasive Bladder Cancer, Lung Metastases, Coronary Heart Disease, Heart Failure with Preserved Ejection Fraction (HFpEF), and Carotid Artery Surgery.
Mercy Compounding And Home Infusion Pharmacy
Joanne Waltman is a primary care provider, practicing in Internal Medicine in Maryland Heights, Missouri. Dr. Waltman is rated as an Experienced provider by MediFind in the treatment of Gastroparesis. She is also highly rated in 18 other conditions, according to our data. Her clinical expertise encompasses ALK-Positive Non-Small Cell Lung Cancer, Lung Adenocarcinoma, Non-Small Cell Lung Cancer (NSCLC), and Small Cell Lung Cancer (SCLC).
Last Updated: 04/28/2026











