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Gastroenterology, Hepatology and Nutrition Fellowship

We sponsor an Accreditation Council of Graduate Medical Education (ACGME)-accredited fellowship training program. Two fellows per year are accepted into our three-year program.

Faculty in the Division of Gastroenterology are committed to training future leaders in pediatric gastroenterology, hepatology and nutrition. To fulfill this commitment, our division has sponsored an ACGME-accredited fellowship training program since 2002, accepting two fellows each year.

Year One

The first year is devoted almost exclusively to clinical work. During this time, you will learn how to:

  • perform procedures done by pediatric gastroenterologists
  • manage simple and complex GI patients who are in the hospital
  • consult on GI problems in non-GI patients

An important part of this training is learning how to interact with patients and their families as well as with other medical professionals.

You also will begin a “continuity clinic” that carries on throughout your entire fellowship. In the continuity clinic, you will learn the long-term management of GI patients.

Years Two and Three

The second and third years of the fellowship are devoted to research, during which time you can elect to conduct basic research with Dr. Lixin Zhu in the DDNC Research Laboratory. Alternatively, you can choose to conduct clinical research under the mentorship of one of the GI faculty and with the assistance of a clinical research nurse. You will be expected to complete a substantial research project, usually culminating in a first-author publication in a peer-reviewed journal.

You will continue to manage patients in your continuity clinic and may participate in some of the more advanced GI procedures. You also will continue to participate in the DDNC clinical conferences.

Second- and third-year fellows can elect to participate in external clinical rotations in adult GI at the Veterans Affairs Medical Center in Buffalo and in the pediatric liver transplant program at Cincinnati Children’s Hospital Medical Center.

The fellowship program provides an environment in which you will have more than adequate opportunity to learn procedures and in which you will receive support as you study pediatric GI disease and how to manage patients.

Our program is small enough that you will receive intense, one-on-one mentoring from each of our superb pediatric GI faculty, yet large enough to give you exposure to every facet of pediatric GI disease.

The Department of Pediatrics and the DDNC are located in Women & Children’s Hospital of Buffalo. The hospital, a UB teaching affiliate, is the regional center for specialized pediatric and women’s health care. It has achieved national recognition and is ranked among the top 20 pediatric hospitals in the nation by U.S. News and World Report.

Because our fellowship program is ACGME-approved, fellows who successfully complete it qualify to take the American Board of Pediatrics examination in pediatric gastroenterology.

To Apply

The postdoctoral education prerequisite is three years of general pediatric residency training. Candidates should apply through ERAS and enter the Pediatric Gastroeneterology Match through NRMP.

Contact Us

If you have any questions, please contact:

Program Administrator

Lori Esene

Fellowship Program Administrator

Phone: (716) 323-0084; Fax: (716) 323-0295



Division of Gastroenterology
1001 Main Street
5th Floor
Buffalo, NY 14203
Phone: (716) 323-0080
Fax: (716) 323-0295

Program Director

Baker, Susan

Susan Baker, MD, PhD

Professor and Co-Chief, Digestive Diseases and Nutrition Center

UBMD Pediatrics, Division of Gastroenterology, 1001 Main Street Buffalo, NY 14203

Phone: (716) 323-0080; Fax: (716) 323-0295


Our Current Fellows

Ayesha Saleem Baig

Ayesha Saleem Baig, MBBS

Medical School: Dow Medical College; Residency: Brookdale University Hospital and Medical Center

Andrew Buckley

Andrew Buckley, DO

Medical School: Lake Erie College of Osteopathic Medicine; Residency: University at Buffalo

Shelly Choudhury

Shelly Choudhury, MD

Medical School: Nilratan Sircar Medical College; Residency: Bronx Lebanon Hospital Center

Abdul Shahein

Abdul Shahein, MBChB, MD

Medical School: Ain Shams University Faculty of Medicine; Residency: K. Hovnanian Children’s Hospital/Nationwide Children’s Hospital

Sebastian Zavoian

Sebastian Zavoian, MD

Medical School: Carol Davila University of Medicine and Pharmacy; Residency: Flushing Hospital Medical Center

ACGME logo

This program is accredited by the Accreditation Council for Graduate Medical Education (ACGME).