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Our People

Fellows from Gastroenterology pose on stairs.

Dedicated experts in gastroenterology + hepatology in Boston at Tufts Medical Center

At Tufts Medical Center, our gastroenterology and hepatology fellowship program is supported by a dedicated team of expert faculty, mentors, and staff. Our people bring diverse backgrounds, specialized knowledge, and a shared commitment to excellence in clinical care, education and research.

Our faculty includes nationally recognized gastroenterologists and hepatologists who provide personalized mentorship and guidance throughout your training. Together, they create a collaborative learning environment that fosters professional growth and academic achievement.

Meet the leaders, educators and innovators who will help shape your fellowship experience and support your career in gastroenterology and hepatology.

Program leadership

Raffi Karagozian, MD 
Program Director, Gastroenterology Fellowship Program 
Raffi.Karagozian@tuftsmedicine.org 

Puja Rai, MD
Associate Program Director
Puja.Rai@tuftsmedicine.org

Current fellows

Program Year
Kuntal Bhowmick, MD
PGY-4
Kuntal Bhowmick, MD
Training + education
Residency
Brown University
About me
Jillian Ross, MD
PGY-4
Jillian Ross, MD
Training + education
Residency
MedStar Georgetown
About me
Jennifer Youn, MD
PGY-4
Jennifer Youn, MD
Training + education
Residency
Tufts Medical Center
About me
Katie Hsia, MD
PGY-5
Katie Hsia, MD
Training + education
Residency
Tufts Medical Center
About me
Christina Lee, MD
PGY-5
Christina Lee, MD
Training + education
Residency
University of Minnesota
About me
Kaitlin Payne, MD
PGY-5
Kaitlin Payne, MD
Training + education
Residency
Cleveland Clinic
About me
Maan El Halabi, MD
PGY-6
Maan El Halabi
Training + education
Medical School
Lebanese American University (LAU)
Residency
Mt. Sinai Morningside/West Hospitals, NYC
About me
Ariel Fischer, MD
PGY-6
Ari Fischer
Training + education
Medical School
Tufts University School of Medicine
Residency
Los Angeles County-USC Medical Center
About me
Tanya Zeina, MD
PGY-6
Tanya Zeina
Training + education
Medical School
Tufts University School of Medicine
Residency
Tufts Medical Center
About me
Contact
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Teaka Walker
Gastroenterology Fellowship Program Coordinator
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Division of Gastroenterology
Tufts Medical Center
800 Washington Street, Box #233
Boston, MA 02111
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