The 20 Best Intestinal Cancer Doctors Near Me in O Fallon, MO
Find the Top Intestinal Cancer Experts and Specialists
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 Intestinal Cancer. 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. Tariq is board certified in gastroenterology and internal medicine. His fellowship in gastroenterology and hepatology at Saint Louis University was completed in 2011. Prior to that he had earned board certification in geriatrics and spent over 10 years in the practice of geriatrics and internal medicine, which included patient care, research and teaching, and several directorships of geriatric programs in the St. Louis area. Dr. Tariq's fellowship in geriatrics was served at Saint Louis University, as was his internal medicine residency. ""My years in geriatric medicine were very rewarding. Now with this additional subspecialty, I look forward to helping adult patients of all ages with their gastrointestinal issues. I am excited to have partnered with Dr. Rodemann and SSM Health in this next chapter of my career.""- Syed Tariq, MD". Dr. Tariq is rated as an Experienced provider by MediFind in the treatment of Intestinal Cancer. He is also highly rated in 17 other conditions, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Crohn's Disease, Familial Adenomatous Polyposis, Colonoscopy, and Endoscopy. Dr. Tariq 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. 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 Intestinal Cancer. 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.
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Chaudhary Khan is a Gastroenterologist practicing medicine in O Fallon, Missouri. Dr. Khan is rated as an Advanced provider by MediFind in the treatment of Intestinal Cancer. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Intestinal Cancer, Trichohepatoenteric Syndrome, Visceromegaly, Colonoscopy, and Endoscopy.
Jingjuan Min is a primary care provider, practicing in Palliative Medicine and Internal Medicine in Lake St. Louis, Missouri. Dr. Min is rated as an Experienced provider by MediFind in the treatment of Intestinal Cancer. She is also highly rated in 2 other conditions, according to our data. Her clinical expertise encompasses Sepsis, Pneumonia, Peptic Ulcer, Endoscopy, and Gastrostomy. Dr. Min is board certified in American Board Of Internal Medicine , American Board Of Internal Medicine/Hospice & Palliative Medicine , Drug Enforcement Administration , Missouri Dept Of Health/Narcotics&Dangerous Drugs , and Missouri State Board Of Registration.
Sandhya Grandhi is a primary care provider, practicing in Family Medicine in Lake St. Louis, Missouri. Dr. Grandhi is rated as an Experienced provider by MediFind in the treatment of Intestinal Cancer. She is also highly rated in 6 other conditions, according to our data. Her clinical expertise encompasses Apoplexy, Heart Attack, Radiation Enteritis, Ureteroscopy, and Endoscopy. Dr. Grandhi is board certified in American Board Of Family Medicine , Drug Enforcement Administration , Illinois Department Of Financial & Professional Regulation , Missouri Dept Of Health/Narcotics&Dangerous Drugs , and Missouri State Board Of Registration.
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Qaiser Jawaid is a Gastroenterologist practicing medicine in O Fallon, Missouri. Dr. Jawaid is rated as an Experienced provider by MediFind in the treatment of Intestinal Cancer. He is also highly rated in 14 other conditions, according to our data. His clinical expertise encompasses Choledocholithiasis, Diverticular Disease, Menetrier Disease, Endoscopy, and Gastrectomy.
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Milton Ochieng is an Internal Medicine provider practicing medicine in O Fallon, Missouri. Dr. Ochieng is rated as an Experienced provider by MediFind in the treatment of Intestinal Cancer. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Angiodysplasia of the Colon, Benign Esophageal Stricture, Lower Esophageal Ring, Gastrectomy, and Endoscopy.
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David Lotsoff is a Gastroenterologist practicing medicine in O Fallon, Missouri. Dr. Lotsoff is rated as an Experienced provider by MediFind in the treatment of Intestinal Cancer. He is also highly rated in 4 other conditions, according to our data. His clinical expertise encompasses Lower Esophageal Ring, Benign Esophageal Stricture, Painful Swallowing, Gastrectomy, and Gastrostomy.
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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 Intestinal Cancer. 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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Michael Zerega is an Internal Medicine provider practicing medicine in Lake Saint Louis, Missouri. Dr. Zerega is rated as an Experienced provider by MediFind in the treatment of Intestinal Cancer. He is also highly rated in 16 other conditions, according to our data. His clinical expertise encompasses Collagenous Colitis, Colitis, Hemorrhoids, Gastrectomy, and Gastrostomy.
BJC Medical Group At St Peters
Mei Huang is a Gastroenterologist practicing medicine in Saint Peters, Missouri. Dr. Huang is rated as an Experienced provider by MediFind in the treatment of Intestinal Cancer. She is also highly rated in 6 other conditions, according to our data. Her clinical expertise encompasses Diverticular Disease, Familial Adenomatous Polyposis, Esophagitis, Colonoscopy, and Gastrectomy.
Hospital Based Practice
John Hartweger is an Internal Medicine provider practicing medicine in Saint Peters, Missouri. Dr. Hartweger is rated as an Experienced provider by MediFind in the treatment of Intestinal Cancer. He is also highly rated in 9 other conditions, according to our data. His clinical expertise encompasses Multisystem Inflammatory Syndrome in Children (MIS-C), Familial Colorectal Cancer, Acute Pancreatitis, Endoscopy, and Colonoscopy.
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April Thebeau is an Internal Medicine provider practicing medicine in Saint Peters, Missouri. Dr. Thebeau is rated as an Experienced provider by MediFind in the treatment of Intestinal Cancer. She is also highly rated in 2 other conditions, according to our data. Her clinical expertise encompasses End-Stage Renal Disease (ESRD), Gallbladder Disease, Heart Failure with Preserved Ejection Fraction (HFpEF), Colonoscopy, and Endoscopy.
Contemporary Womens Healthcare
Sean Mcintosh is a primary care provider, practicing in Family Medicine in O Fallon, Missouri. Dr. Mcintosh is rated as an Experienced provider by MediFind in the treatment of Intestinal Cancer. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Osteomyelitis in Children, Malaria, Type 2 Diabetes (T2D), Hypertension, and Endoscopy.
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Nadia Zia is an Internal Medicine provider practicing medicine in O Fallon, Missouri. Dr. Zia is rated as an Experienced provider by MediFind in the treatment of Intestinal Cancer. Her clinical expertise encompasses Gallbladder Disease, Intestinal Cancer, Endoscopy, and Hip Replacement.
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 Intestinal Cancer. 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. 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 rated as an Experienced provider by MediFind in the treatment of Intestinal Cancer. He is also highly rated in 15 other conditions, according to our data. His clinical expertise encompasses Diverticular Disease, Esophagitis, Turcot Syndrome, Endoscopy, and Colonoscopy. Dr. Geisman 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. Diwakaran is board certified in gastroenterology as well as in internal medicine. He has been in practice since 2002. Dr. Diwakaran served a gastroenterology fellowship at Saint Louis University Hospital after his residency training at Wayne State University - Detroit Medical Center. He attended medical school at Madras Medical College in India. Dr. Diwakaran provides the following procedures including, but not limited to colonoscopy, EGD, 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 colon colonoscopy for colon cancer prevention. He is on staff at SSM Health St. Joseph Hospital - St. Charles and SSM Heatlh St. Joseph Hospital - Lake Saint Louis. Dr. Diwakaran is rated as an Experienced provider by MediFind in the treatment of Intestinal Cancer. He is also highly rated in 1 other condition, according to our data. His clinical expertise encompasses Esophagitis, Gastrointestinal Bleeding, Painful Swallowing, Endoscopy, and Gastrectomy. Dr. Diwakaran 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.
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Jason Haas is a Gastroenterologist practicing medicine in Chesterfield, Missouri. Dr. Haas is rated as an Experienced provider by MediFind in the treatment of Intestinal Cancer. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Gastrointestinal Bleeding, Swallowing Difficulty, Painful Swallowing, Endoscopy, and Gastrectomy. Dr. Haas is board certified in Gastroenterology.
Last Updated: 04/28/2026






