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Michael Flicker, MD

Dr. Michael Flicker first attended the University of Pennsylvania, where he completed his undergraduate degree magna cum laude. In 2004, he went on to graduate from the University of Chicago, completing his medical degree at its Pritzker School of Medicine. He then continued at the University of Chicago Hospital, completing his Internal Medicine residency. Continuing his education in Boston, Dr. Flicker completed a Gastroenterology Fellowship at Harvard’s Brigham and Women’s Hospital. Returning to his roots, he returned to Chicago for an additional year of fellowship at Northwestern Memorial Hospital in Advanced Interventional Endoscopy. After serving as a faculty member of Northwestern from 2011 to 2012, he moved on to work in private practice.

Dr. Flicker is currently a member of the AGA and ASGE.


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Dr. Carl Atallah

Dr. Carl Atallah is a Board Certified internist and gastroenterologist. After graduating from Penn State University, Dr. Atallah earned his Doctor of Osteopathic Medicine at Nova Southeastern University in Fort Lauderdale, Florida. He completed his internship and residency in internal medicine at the University of Medicine and Dentistry of New Jersey. He then completed his fellowship training in gastroenterology at Midwestern University in Chicago.

During his fellowship, Dr. Atallah was a clinical assistant professor at Midwestern University and enjoyed his time teaching medical students and residents.

Dr. Atallah treats patients holistically and with respect. He strives to offer patients advanced treatment options while keeping in mind the best comprehensive care for each individual. Dr. Atallah is currently a member of the American Gastroenterological Association (AGA), American Society for Gastrointestinal Endoscopy (ASGE) and American Osteopathic Association (AOA).

In his free time, Dr. Atallah enjoys traveling, exercising, and spending time with family and friends.


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Dr. Daniel Berger

Dr. Daniel Berger attended the University of Illinois at Urbana-Champaign, where he completed a bachelor’s degree in Molecular and Cellular Biology. He subsequently earned a Doctorate in Medicine at the Chicago Medical School/Rosalind Franklin University of Medicine and Science. He continued his medical training at Rush University Medical Center where he completed a residency in Internal Medicine and fellowship in Gastroenterology and Hepatology.

Dr. Berger treats all aspects of gastrointestinal disease and places with a particular emphasis on prevention of cancers of the colon and esophagus. Dr. Berger has additional clinical interests in inflammatory bowel disease (IBD) and infectious diseases of the GI tract. During his fellowship, Dr. Berger started a program for fecal microbiota transplantation (FMT) and was part of the first FMT done at the medical center. His research on quality metrics in screening colonoscopy has been published in several peer-reviewed medical journals.

Dr. Berger treats his patients with utmost respect and provides individualized care tailored to the specific needs of his patients. He is a member of the American Gastroenterological Association (AGA) and the American Society for Gastrointestinal Endoscopy (ASGE).

In his free time, Dr. Berger enjoys spending time with family, traveling, playing the piano, and cheering for Chicago sports teams.