Advanced Endoscopy Fellowship Program


The advanced endoscopy fellowship program at Stony Brook University Hospital was started in 2013. This unique program offers an additional year of training following a traditional 3-year gastroenterology fellowship. As the major referral center in Suffolk County Long Island, rigorous and comprehensive training is offered in endoscopic retrograde cholangiopancreatography (ERCP) with cholangioscopy and pancreatoscopy, diagnostic and therapeutic endoscopic ultrasound (EUS), enteral stent placement, techniques of mucosal ablation (e.g. radiofrequency ablation), endoscopic mucosal resection (EMR), and exposure to surgical endoscopy. In total, over 2,000 advanced endoscopic procedures performed annually at Stony Brook. In addition, 4th year fellows in advanced endoscopy are encouraged to participate in one of several clinical endoscopic research studies during their training, as well as the teaching of basic endoscopic skills to general gastroenterology fellows.

The advanced endoscopy program is directed by Jonathan Buscaglia, MD, FASGE, AGAF. Dr. Buscaglia completed his advanced endoscopy training at Johns Hopkins Hospital, and he specializes in the management of pancreatic and biliary diseases. Additional faculty members include Juan Carlos Bucobo, MD, who completed his advanced endoscopy training at Cedars-Sinai Medical Center, UCLA. He specializes in bariatric endoscopy, pancreatico-biliary endoscopy and double-balloon enteroscopy. Lionel D'Souza, MBBS, MD, completed his advanced endoscopy training at Mount Sinai Beth Israel Hospital and Mount Sinai Hospital, and he specializes in third space endoscopy and endoscopic surgery. Asim Khokhar, MD completed his advanced endoscopy training at Memorial Sloan Kettering Cancer Center. 

Interested candidates applying to the program are encouraged to do so through the American Society for Gastrointestinal Endoscopy (ASGE) website, under the AEF Match Programs.

Current Fellow

Yonatan Hillman MD 2022-2023
Yonatan Hillman, MD
GI Fellowship - Hofstra/Northwell (North Shore University Hospital & Long Island Jewish Medical Center)
Residency - Icahn School of Medicine at Mount Sinai
Medical School - Tufts University School of Medicine 

Past Fellows

Khwaja Haq, MD 2021-2022
Khwaja F. Haq, MD
Medical School: Dow Medical College
Residency: New York Medical College, Westchester Medical Center
Fellowship: Henry Ford Hospital, Wayne State University
Dr. Henry Jen 2020-2021
Henry Jen, MD
Medical School: Stony Brook University School of Medicine
Residency: Lenox Hill Hospital
Fellowship: Stony Brook University Hospital, Renaissance School of Medicine
2019 - 2020 
Vineet Rolston, MD
Medical School: New York Medical College
Residency: Cedars-Sinai Medical Center
Fellowship: NYU Langone School of Medicine
2018 - 2019
Anan Said, MD
Medical School: Howard University
Residency: University of Maryland
Fellowship: University of Maryland
2017 - 2018 
Eduardo Quintero, MD
Medical School: San Juan Bautista
Residency: University of Florida, Tampa
Fellowship: Stony Brook University Hospital
2016 - 2017
Anoop Appannagari, MD
Medical School: Jefferson Medical College
Residency: University of Chicago
Fellowship: Loyola
2015 - 2016
Demetrios Tzimas, MD
Medical School: Albert Einstein
Residency: NYU
Fellowship: NYU 
2014 - 2015
Ryan Wong, MD
Medical School: Albert Einstein
Residency: Montefiore
Fellowship: Cook Country Health & Hospital Systems
2013 - 2014
Amar Thosani, MD
Medical School: New Jersey Medical School, UMDNJ
Residency: Montefiore
Fellowship: Montefiore