Meet Our GI Cancer Specialists
Our Gastrointestinal Cancer Team
The activities of our gastrointestinal cancer specialists are integrated through a multispecialty clinic, where you will be seen regularly and clinicians will regularly review your progress. Our staff includes expert medical oncologists, surgeons, gastroenterologists, radiologists, radiation oncologists, nurses, social workers and nutritionists.
Medical Oncology
Physicians
![Andrea Bullock, MD](/-/media/images/beth-israel-org/team-members/bullock-andrea-j/andrea-bullock-md-80x100px.jpg)
Andrea J. Bullock, MD, MPH
Disease Group Leader, Gastrointestinal Malignancies; Medical Oncology
![Ali Baghian, MD](/-/media/rich-text-images/beth-israel-org/centers-and-departments/cancer-center/genitourinary-cancer-program/ali-baghian-md-2023-80x100px.jpg)
Ali Baghian, MD
Medical Oncology
![BrunoBockorny80x100](/-/media/images/beth-israel-org/team-members/brunobockorny80x100.jpg)
Bruno Bockorny, MD
Medical Oncology
![MaryLintonPeters80x100](/-/media/images/beth-israel-org/team-members/marylintonpeters80x100.jpg)
Mary Linton Peters, MD
Medical Oncology
![Ahmed Rattani, MD](/-/media/images/beth-israel-org/team-members/ahmed-rattani-md-80x100px.jpg)
Ahmed Rattani, MD
Instructor, Medicine, Harvard Medical School
![Peter Whooley, DO](/-/media/images/beth-israel-org/team-members/peter-whooley-do-80x100px.jpg)
Peter D. Whooley, DO, MBA
Medical Oncology
![Jessica Zerillo](/-/media/images/beth-israel-org/team-members/zerillo-jessica-a/jessica-zerillo-md-80x100.jpg)
Jessica A. Zerillo, MD, MPH
Medical Oncology
![Learn more about Dr. O'Rourke](/-/media/images/beth-israel-org/team-members/jenna-orourke-np.png)
Jenna O’Rourke, NP
![Learn more about Caroline Trickett](/-/media/images/beth-israel-org/team-members/caroline-trickett-80x100.jpg)
Caroline Trickett, NP
![Learn more about Luiz Duque, RN](/-/media/images/beth-israel-org/team-members/luiz-duque-80x100.jpg)
Luiz Duque, RN
![Arielle Lasoff](/-/media/images/beth-israel-org/team-members/arielle-lasoff-80x100.jpg)
Arielle Lasoff, RN
![Learn more about Nicole Reilly, RN](/-/media/images/beth-israel-org/team-members/nicole-reilly-80x100.jpg)
Nicole Reilly, RN
Interventional Gastroenterology
![](/-/media/images/beth-israel-org/team-members/berzin-tyler-m.jpg)
Tyler Berzin, MD, MS
Director, Advanced Endoscopy Fellowship Program; Gastroenterology
![Moamen M. Gabr, MD](/-/media/images/beth-israel-org/team-members/moamen-gabr-md-120x150px.jpg)
Moamen M. Gabr, MD
Director, Endoluminal Surgery; Gastroenterology
![](/-/media/images/beth-israel-org/team-members/pleskow-douglas-k.jpg)
Douglas Pleskow, MD
Clinical Chief, Gastroenterology
![](/-/media/images/beth-israel-org/team-members/sawhney-mandeep-s.jpg)
Mandeep S. Sawhney, MD
Director, Therapeutic Endoscopy; Endoscopy Research; Gastroenterology
Radiation Oncology
![](/-/media/images/beth-israel-org/team-members/center-and-department/radiation-oncology/matthew-abrams.jpg)
Matthew Abrams, MD
Radiation Oncology
![Raechel Perry](/-/media/images/beth-israel-org/team-members/raechel-perry.jpg)
Raechel Perry, NP
Radiation Oncology
Radiology
![Muneeb Ahmed, MD](/-/media/images/beth-israel-org/team-members/muneebahmedmd80x100px.jpg)
Muneeb Ahmed, MD, FSIR
Chief, Vascular & Interventional Radiology; Vice Chair of Interventional Services; Diagnostic Radiology
![Diana Dinh, MD](/-/media/images/beth-israel-org/team-members/diana-dinh-md-80x100px.jpg)
Diana Dinh, MD
Vascular & Interventional Radiology; Diagnostic Radiology; Liver Tumor Clinic
![](/-/media/images/beth-israel-org/team-members/kane-robert-a.jpg)
Robert A. Kane, MD
Abdominal Radiology
![](/-/media/images/beth-israel-org/team-members/kolodny-gerald.jpg)
Gerald Kolodny, MD
Nuclear Medicine; Diagnostic Radiology
![](/-/media/images/beth-israel-org/team-members/lee-karen-s.jpg)
Karen S. Lee, MD
Director, Radiology Fellowship Training Programs; Diagnostic Radiology
![](/-/media/images/beth-israel-org/team-members/parker-john-a.jpg)
J. Anthony Parker, MD, PhD
Nuclear Medicine
![](/-/media/images/beth-israel-org/team-members/siewert-bettina.jpg)
Bettina Siewert, MD
Executive Vice Chair, Radiology; Diagnostic Radiology
![](/-/media/images/beth-israel-org/team-members/smith-martin-p.jpg)
Martin P. Smith, MD
Director of Community MRI; Interventional Radiology; Diagnostic Radiology
![](/-/media/images/beth-israel-org/team-members/wei-jesse-l.jpg)
Jesse L. Wei, MD
Clinical Director of CT; Neuroradiology; Interventional Radiology; Diagnostic Radiology
Surgical Oncology
![Umut Sarpel, MD, MSc, FACS, FSSO](/-/media/images/beth-israel-org/team-members/umut-sarpel-20240118_19_80x100.jpg)
Umut Sarpel, MD, MSc, FACS, FSSO
Chief, Division of Surgical Oncology
![Thomas Cataldo](/-/media/images/beth-israel-org/team-members/thomas-cataldo-80x100px.jpg)
Thomas E. Cataldo, MD
Colon & Rectal Surgery; Surgery
![Kristen T. Crowell, MD](/-/media/images/beth-israel-org/team-members/kristen-crowell--120x150.jpg)
Kristen T. Crowell, MD
Colon & Rectal Surgery
![](/-/media/images/beth-israel-org/team-members/evangelso-messaris.jpg)
Evangelos Messaris, MD, PhD, FACS, FASCRS
Chief, Colon and Rectal Surgery; Colon & Rectal Surgery; Surgery
![Daniel Wong, MD](/-/media/images/beth-israel-org/team-members/daniel-wong-md-2023-80x100px.jpg)
Daniel Wong, MD
Colon & Rectal Surgery
Liver
![](/-/media/images/beth-israel-org/team-members/cowan-vanessa-l.jpg)
Vanessa L. Cowan, MD
Surgery
![Learn more about Dr. Dib Marambio](/-/media/images/beth-israel-org/team-members/martin-dib-md-80x100.jpg)
Martin J. Dib Marambio, MD
Director, Hepatobiliary Surgery, Director, Living Donor Liver Transplant Program
![Amy Evenson](/-/media/images/beth-israel-org/team-members/evenson-amy-r.jpg)
Amy R. Evenson, MD, MPH, FACS
Surgical Director of Kidney & Pancreas Transplant
![](/-/media/images/beth-israel-org/team-members/kent-tara-web.jpg)
Tara S. Kent, MD
General Surgery
![Learn more about Jeanne Quinn](/-/media/images/beth-israel-org/team-members/jeanne-quinn-np-80x100px/jeanne-quinn-80x100.jpg)
Jeanne Quinn, MS, APRN-BC
Rectal Cancer Program Coordinator
![Learn more about Mary Keane](/-/media/images/beth-israel-org/team-members/female-80x100/mary-keane-80x100.jpg)
Mary Keane, RN
Pathology
![Vikram Deshpande, MD](/-/media/images/beth-israel-org/team-members/center-and-department/vikram--deshpande-md-80x100px.jpg)
Vikram Deshpande, MD
Director of GI Pathology; Director of Bone and Soft Tissue Pathology
![Gamze Ayata, MD](/-/media/images/beth-israel-org/team-members/ayata-gamze.jpg)
Gamze Ayata, MD
Director of Gastrointestinal and Liver Pathology Fellowship
![](/-/media/images/beth-israel-org/team-members/kantekure-kanchan.jpg)
Kanchan Kantekure, MD
Pathology
![Learn more about Dr. Nasser](/-/media/images/beth-israel-org/team-members/nasser-imad-ahmad.jpg)
Imad A. Nasser, MD
Director of Hepatobiliary Pathology
![Yuho Ono, MD](/-/media/images/beth-israel-org/team-members/yuho-ono-md-80x100px.jpg)
Yuho Ono, MD
![Matthew Rosenbaum, MD](/-/media/images/beth-israel-org/team-members/rosenbaum-120x150.jpg)
Matthew Rosenbaum, MD
Pathology
![Monika Vyas, MD](/-/media/images/beth-israel-org/team-members/vyas-120x150.png)
Monika Vyas, MD
![Helen Wang, MD](/-/media/images/beth-israel-org/team-members/helen-wang-md-2019-80x100px.jpg)
Helen H. Wang, MD, MPH, DrPH
![Learn more about Dr. Yilmaz](/-/media/images/beth-israel-org/team-members/silhouette-male/omer-yilmaz-md-80x100.jpg)
Omer H. Yilmaz, MD, PhD
![Osman Yilmaz, MD - Photo Unavailable](/-/media/images/beth-israel-org/team-members/center-and-department/osman-yilmaz-md-80x100px.jpg)
Osman Yilmaz, MD
Pathology
Administrators
![Learn more about Logan J. Ruff](/-/media/images/beth-israel-org/team-members/logan-j-ruff-80x100.jpg)
Logan J. Ruff
Program Coordinator
![Learn more about Teneisha Powell](/-/media/images/beth-israel-org/team-members/teneisha-powell-80x100.jpg)
Teneisha Powell
Administrative Assistant
![Learn more about Elizabeth Tyra](/-/media/images/beth-israel-org/team-members/elizabeth-tyra-80x100.jpg)
Elizabeth Tyra
Administrative Assistant
![Sarah Cowen](/-/media/images/beth-israel-org/team-members/sarah-cowan-80x100.jpg)
Sarah Cowen
Administrative Assistant