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Gastroenterology and Hepatology

Drone photo taken of the Gastroenterology Division in front of the Rotary Building.

Led by division director Mohammad Al-Haddad, MD, the Division of Gastroenterology and Hepatology within the Department of Medicine at IU School of Medicine has a distinguished tradition of innovation in research and education and a demonstrated excellence in patient care. This is one of the largest divisions of its kind in the United States, offering an enormous breadth of clinical and research expertise for learners and faculty peers. 

The division was founded by Dr. Philip Christiansen in 1958 and flourished under the leadership of Drs. Lawrence Lumeng (Division Director from 1984–2007), Naga Chalasani (Division Director from 2007–2020), and Glen Lehman (Clinical Director from 1985–2005) to national prominence. The division has enjoyed significant growth to faculty and fellowship size, patient and procedural volume, and the federally-funded research program.

Support Gastroenterology and Hepatology

For more information about how to support the division's education and research, contact Derek Dixon, Senior Director of Development.
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70 Full-time Faculty
16 Fellows
$10 M in Federal Funding (FY23)
$4.6 M in Industry Funding (FY23)


The division’s research program is extensive and is both laboratory-based and patient-oriented. The group receives millions of dollars in research funding each year from the NIH and other extramural sources.

a surgeon at work in the operating room

Clinical Care

Accomplished faculty physicians of this division practice at IU Health Gastroenterology, providing comprehensive care—from screening services for early disease detection, to advanced diagnostic procedures and leading edge medical and surgical treatments.


IU School of Medicine offers a three-year ACGME-accredited Gastroenterology Hepatology fellowship as well as CME programs, an annual GI Update course and an annual AASLD update.

Our Mission

To promote innovation and excellence in education, research and patient care to enhance the health in the state of Indiana and beyond.

Clinical Facilities

Gastroenterology & Hepatology faculty physicians are the exclusive GI and Hepatology care providers at IU Health University Hospital, Eskenazi Health, and the Richard L. Roudebush VA Medical Center in Indianapolis. Our team includes 70 faculty members and 20 advanced practice providers. Collectively, our faculty perform over 45,000 endoscopic procedures at several practice sites, making us one of the powerhouses of endoscopy in the Midwest and nation-wide.

Group photo of Drs. Lehman, Sherman and nurse Lois Bucksot

Our prized Advanced and Therapeutic Endoscopy Program is world-renowned with over 8,000 procedures performed such as ERCP, EUS, endoluminal therapies and third space endoscopy in a state-of-the-art recently renovated suite. This space was formally named in 2020 through a $1 million endowment, the “Lehman, Bucksot and Sherman ERCP Suite” – honoring Dr. Glen Lehman, longtime ERCP charge nurse Lois Bucksot, RN, and Dr. Stuart Sherman. In addition, we offer unique and highly specialized services in hepatology, transplant hepatology, colon cancer screening, inflammatory bowel disease, upper and lower GI motility, medical and endoscopic weight loss, and familial and hereditary GI conditions.

Photo of Douglas Rex Suite

Our main outpatient surgical center has been named after Dr. Glen Lehman in recognition to his numerous contributions to the field of endoscopy. In addition to our traditional Academic Health Center-based clinics and endoscopy suites, the division offers ambulatory and procedural practices at Spring Mill, IU Health North hospital, and IU Health Saxony Hospital. Our endoscopy suite on the North side has been named after Dr. Douglas Rex, a world-renowned endoscopist and a pioneer in colorectal cancer screening. In continuing the tradition started nearly 30 years ago, the division has a robust outreach clinical program where faculty clinicians have established practices in the towns surrounding Indianapolis.

Explore our Annual Report

We invite you to delve into our 2023 annual report, where you will find a detailed account of our collective endeavors. Through our unwavering dedication, we have reached significant milestones in research, education, and patient care, underscoring our steadfast commitment to advancing excellence in gastrointestinal health. From pioneering research endeavors to impactful clinical initiatives, we persistently push the boundaries of innovation while nurturing the next generation of leaders in our field.

View our annual report

Featured Posts

Douglas Rex, MD, holding a microphone and standing behind a lectern, addresses the audience of his Sagamore of the Wabash celebration.
The Beat

Rex given the Sagamore of the Wabash

Dr. Stuart Sherman
The Beat

Remembering Dr. Stuart Sherman

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Looking for patient care?

To schedule an appointment with an IU School of Medicine faculty gastroenterologist, contact Indiana University Health at 888-484-3258 or online using the Find a Doctor portal.