The 20 Best Colonoscopy Doctors near Lake Forest, IL
Find the Experts and Specialists who perform Colonoscopy
Advocate Medical Group Gastroenterology
Andrew Mazulis is a Gastroenterologist practicing medicine in Libertyville, Illinois. Dr. Mazulis is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 3 other conditions, according to our data. His clinical expertise encompasses Sclerosing Mesenteritis, Viral Gastroenteritis, Gastrointestinal Bleeding, Colonoscopy, and Endoscopy. Dr. Mazulis is board certified in American Board Of Internal Medicine, Gastroenterology.
Asamad Soudagar is a Gastroenterologist practicing medicine in Lake Forest, Illinois. He has been practicing medicine for over 17 years. Dr. Soudagar is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 10 other conditions, according to our data. His clinical expertise encompasses Familial Pancreatic Cancer, Bile Duct Obstruction, Bile Duct Stricture, Gastrectomy, and Endoscopy. Dr. Soudagar is board certified in American Board Of Internal Medicine - Gastroenterology (Certified).
Alexander Tosiou is a Gastroenterologist practicing medicine in Lake Forest, Illinois. He has been practicing medicine for over 33 years. Dr. Tosiou is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 16 other conditions, according to our data. His clinical expertise encompasses Lower Esophageal Ring, Benign Esophageal Stricture, Diarrhea, Gastrectomy, and Endoscopy. Dr. Tosiou is board certified in American Board Of Internal Medicine - Gastroenterology (Certified).
Frank Martini is a Gastroenterologist practicing medicine in Lake Forest, Illinois. He has been practicing medicine for over 44 years. Dr. Martini is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 15 other conditions, according to our data. His clinical expertise encompasses Diverticular Disease, Visceromegaly, Collagenous Colitis, Endoscopy, and Gastrectomy. Dr. Martini is board certified in American Board Of Internal Medicine - Gastroenterology (Certified).
Saleh Eftaiha is a Colorectal Surgeon practicing medicine in Lake Forest, Illinois. He has been practicing medicine for over 14 years. Dr. Eftaiha is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 13 other conditions, according to our data. His clinical expertise encompasses Diverticular Disease, Anal Fissure, Ogilvie Syndrome, Small Bowel Resection, and Sacral Nerve Stimulation. Dr. Eftaiha is board certified in American Board Of Colon And Rectal Surgery - Colon & Rectal Surgery (Certified).
Advocate Medical Group Lincolnshire 100 Village Green
Richard Margolin is a primary care provider, practicing in Family Medicine in Lincolnshire, Illinois. Dr. Margolin is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses COVID-19, Multisystem Inflammatory Syndrome in Children (MIS-C), Sepsis, Gastrostomy, and Hip Replacement. Dr. Margolin is board certified in American Osteopathic Board Of Family Physicians, Family Medicine/OMT.
Advocate Medical Group Gastroenterology
Igor Naryzhny is a Gastroenterologist practicing medicine in Lincolnshire, Illinois. He has been practicing medicine for over 17 years. Dr. Naryzhny is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 11 other conditions, according to our data. His clinical expertise encompasses Swallowing Difficulty, Painful Swallowing, Ascites, Gastrectomy, and Colonoscopy. Dr. Naryzhny is board certified in American Board Of Internal Medicine, Gastroenterology.
GI Partners Of Illinois, LLC
Tarek Almouradi is an Internal Medicine provider practicing medicine in Libertyville, Illinois. Dr. Almouradi is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 76 other conditions, according to our data. His clinical expertise encompasses Angiodysplasia of the Colon, Watermelon Stomach, Hereditary Pancreatitis, Gastrectomy, and Endoscopy. Dr. Almouradi is board certified in American Board Of Internal Medicine, Gastroenterology.
Illinois Gastroenterology Group, LLC
Amit Kalra is a Gastroenterologist practicing medicine in Gurnee, Illinois. Dr. Kalra is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 37 other conditions, according to our data. His clinical expertise encompasses Gastroesophageal Reflux Disease (GERD), Chronic Erosive Gastritis, Hemorrhoids, Colonoscopy, and Gastrectomy. Dr. Kalra is board certified in American Board Of Internal Medicine, Gastroenterology.
Endeavor Health Medical Group
Michael Hersh, MD, a gastroenterologist and internal medicine physician at Endeavor Health, specializes in diagnosing and treating disorders of the digestive tract. He offers a range of procedures, including colonoscopy and upper endoscopy, and emphasizes the importance of routine screening and early detection. Dr. Hersh takes a problem-solving approach, helping patients understand their symptoms and guiding them through both prevention and treatment. Dr. Hersh is rated as an Advanced provider by MediFind in Colonoscopy. He is also highly rated in 5 other conditions, according to our data. His clinical expertise encompasses Irritable Bowel Syndrome (IBS), Familial Adenomatous Polyposis, Turcot Syndrome, Colonoscopy, and Gastrectomy. Dr. Hersh is board certified in American Board Of Internal Medicine.
Endeavor Health Medical Group
Barry S. Levin, MD, an internal medicine and critical care medicine physician at Endeavor Health, provides care across acute illness management and anesthesiology. He treats patients in critical and perioperative settings, applying expertise in both intensive care and anesthesia support. Dr. Levin’s background in internal medicine, anesthesiology and critical care enables him to deliver coordinated treatment during complex medical situations with an emphasis on safety and clinical excellence. Dr. Levin is rated as an Experienced provider by MediFind in Colonoscopy. His clinical expertise encompasses Lung Nodules, Vitamin D Deficiency, Venous Thromboembolism (VTE), Endoscopy, and Gastrostomy. Dr. Levin is board certified in American Board Of Internal Medicine and American Board Of Anesthesiology.
North Shore Medical Associates
Sabrina Jones is an Internal Medicine provider practicing medicine in Bannockburn, Illinois. Dr. Jones is rated as an Experienced provider by MediFind in Colonoscopy. Her clinical expertise encompasses Endoscopy and Pancreatectomy. Dr. Jones is board certified in American Board Of Internal Medicine.
Endeavor Health Medical Group
Omar Khan, MD, a gastroenterologist at Endeavor Health, specializes in inflammatory bowel disease, including Crohn’s disease, ulcerative colitis and hereditary colorectal cancer syndromes. He takes a personal, team-based approach to care, helping patients manage their condition through all stages of health. Dr. Khan is also passionate about advancing predictive tools to better match treatments with individual needs. Dr. Khan is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 22 other conditions, according to our data. His clinical expertise encompasses Hemorrhagic Proctocolitis, Ulcerative Colitis, Crohn's Disease, Gastrectomy, and Endoscopy. Dr. Khan is board certified in American Board Of Internal Medicine.
Endeavor Health Medical Group
Nicholas A. Zwang, MD, an internal medicine and nephrology physician at Endeavor Health, provides care for adults with a focus on kidney health and overall wellbeing. He evaluates and manages acute and chronic kidney conditions, collaborates with specialists to address complex health needs and supports patients through ongoing disease management. Dr. Zwang combines expertise in internal medicine with nephrology to deliver comprehensive care tailored to each patient’s health goals. Dr. Zwang is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 2 other conditions, according to our data. His clinical expertise encompasses Acute Kidney Failure, Necrosis, Heart Failure with Preserved Ejection Fraction (HFpEF), Prostatectomy, and Ureteroscopy. Dr. Zwang is board certified in American Board Of Internal Medicine.
Endeavor Health Medical Group
Lesley Rhee, MD, a gastroenterologist at Endeavor Health, evaluates and treats conditions affecting the digestive system, including the esophagus, stomach, intestines and liver. She provides diagnostic procedures and therapeutic care to support patients in managing gastrointestinal health. Dr. Rhee is rated as an Experienced provider by MediFind in Colonoscopy. She is also highly rated in 14 other conditions, according to our data. Her clinical expertise encompasses Familial Adenomatous Polyposis, Gardner Syndrome, Hemorrhoids, Endoscopy, and Gastrectomy. Dr. Rhee is board certified in American Board Of Internal Medicine.
Endeavor Health Medical Group
Joel Retsky, MD, a gastroenterologist at Endeavor Health, specializes in inflammatory bowel disease, including Crohn’s disease and ulcerative colitis, as well as colonoscopy for colon cancer screening. He completed advanced training at the University of Chicago and served on faculty before joining community-based practice. Dr. Retsky is committed to delivering the same level of care he would want for his own family. Dr. Retsky is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 40 other conditions, according to our data. His clinical expertise encompasses Familial Adenomatous Polyposis, Turcot Syndrome, Gardner Syndrome, Endoscopy, and Colonoscopy. Dr. Retsky is board certified in American Board Of Internal Medicine.
Endeavor Health Medical Group
Shailesh Bajaj, MD, a gastroenterologist at Endeavor Health, has been caring for patients for more than 17 years. He treats a wide range of digestive conditions, including cancers of the GI tract, and embraces new modalities that improve patient outcomes and comfort. Dr. Bajaj believes in treating every patient with the same care and respect he would offer his own family. Dr. Bajaj is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 34 other conditions, according to our data. His clinical expertise encompasses Cholangitis, Sclerosing Cholangitis, Bile Duct Obstruction, Gastrectomy, and Pancreatectomy. Dr. Bajaj is board certified in American Board Of Internal Medicine.
Endeavor Health Medical Group
Matthew Tick, DO, a gastroenterologist at Endeavor Health, treats patients with a wide range of digestive disorders and embraces innovation to improve care. He values getting to know his patients and ensuring they feel heard, informed and empowered throughout their treatment journey. Dr. Tick is particularly interested in new GI therapies and technologies that offer more effective options for healing. Dr. Tick is rated as an Experienced provider by MediFind in Colonoscopy. He is also highly rated in 9 other conditions, according to our data. His clinical expertise encompasses Hemorrhoids, Familial Adenomatous Polyposis, Turcot Syndrome, Endoscopy, and Colonoscopy. Dr. Tick is board certified in American Board Of Internal Medicine.
Aaron Cohn is a Gastroenterologist practicing medicine in Deerfield, Illinois. He has been practicing medicine for over 15 years. Dr. Cohn is rated as an Experienced provider by MediFind in Colonoscopy. His clinical expertise encompasses Crohn's Disease, Esophagitis, Esophageal Varices, Colonoscopy, and Endoscopy. Dr. Cohn is board certified in American Board Of Internal Medicine - Gastroenterology (Certified).
Illinois Gastroenterology Group, LLC
Jennifer Stiasny is a Gastroenterologist practicing medicine in Gurnee, Illinois. Dr. Stiasny is rated as an Experienced provider by MediFind in Colonoscopy. She is also highly rated in 31 other conditions, according to our data. Her clinical expertise encompasses Gastric Dysmotility, Gas Bloat Syndrome, Chronic Erosive Gastritis, Gastrectomy, and Colonoscopy. Dr. Stiasny is board certified in American Osteopathic Board Of Internal Medicine, Gastroenterology.
Last Updated: 04/28/2026



















