Physicians

Flint Gastroenterology Associates

Nathan J. Landesman, D.O., F.A.C.O.I

Dr. Landesman treats all adult gastrointestinal (GI) disorders with a special interest in GI tumors as well as pancreatobiliary disease.  In addition to his 3-year GI fellowship, he is one of only a handful in the state to complete an intensive 1-year fellowship in advanced therapeutic endoscopy in Milwaukee, WI with world-renowned faculty.  He performed the first Endoscopic Ultrasound at Genesys Regional Medical Center and is the only fellowship-trained advanced endoscopist in the area.  In addition, he is a key clinical faculty member for the Gastroenterology fellowship at Genesys and instructs osteopathic/allopathic students, interns, and residents.

Dr. Landesman is board certified in both Internal Medicine and Gastroenterology and is a member of the American Osteopathic Association (AOA), Michigan Osteopathic Association (MOA), American College of Osteopathic Internists (ACOI), American College of Gastroenterology (ACG), and American Society of Gastrointestinal Endoscopy (ASGE).  In addition, he received multiple awards throughout his training for leadership, teaching, and quality patient care with lecture/poster presentations at medical conferences throughout the United States. 

Dr. Landesman provides thorough, compassionate care with excellent communication skills and prides himself on a team approach to achieve unsurpassed outcomes.

In addition to office consultation and follow-up appointments at Flint Gastroenterology Associates, Dr. Landesman provides in/outpatient services at Genesys and outpatient services at Health Park Endoscopy as well as McLaren-Flint Surgery & Endoscopy Center. 


Justin R. Miller, D.O., F.A.C.O.I.

Dr. Miller graduated Cum Laude with a Bachelor of Science degree from Michigan State University in 1995 and proceeded to Michigan State University College of Osteopathic Medicine where he received his D.O. degree in 2000. He completed his Internal Medicine residency in 2003 at Genesys Regional Medical Center (GRMC) and his Gastroenterology fellowship in 2006 at the same institution. He received the honor of being named Resident of the Year during his residency. During his fellowship he also trained with world renowned faculty in Hepatology/Liver transplantation as well as Inflammatory Bowel Disease (IBD)

In addition to his work as the Program Director for the Gastroenterology fellowship at GRMC, he is also the Gastroenterology Education Coordinator for the Internal Medicine Residency at GRMC. He serves on several hospital committees including the Department of Medicine Quality Oversight Committee. He is also a member of the Gastroenterology subsection of the Board Certification Exam Committee of the AOA.

Dr. Miller is board certified in Gastroenterology and is a member of the American College of Gastroenterology, American Gastroenterology Association, American Society of Gastrointestinal Endoscopy, American Association for the Study of Liver Disease, American Osteopathic Association and is a fellow in the American College of Osteopathic Internists. He is an Associate Clinical Professor at Michigan State University College of Osteopathic Medicine and an Adjunct Clinical Preceptor for Kirksville College of Osteopathic Medicine.

Dr. Miller treats all adult gastrointestinal disorders. In addition to office consultation and follow-up appointments at Flint Gastroenterology Associates, Dr. Miller provides inpatient and outpatient services at GRMC and outpatient services at Healthpark Endoscopy and McLaren-Flint Surgery & Endoscopy Center.

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