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 J. Bullock, MD, MPH
Disease Group Leader, Gastrointestinal Malignancies; Medical Oncology

Ali Baghian, MD
Medical Oncology

Bruno Bockorny, MD
Medical Oncology

Mary Linton Peters, MD
Medical Oncology

Ahmed Rattani, MD
Instructor, Medicine, Harvard Medical School

Peter D. Whooley, DO, MBA
Medical Oncology

Jessica A. Zerillo, MD, MPH
Medical Oncology

Jenna O’Rourke, NP

Caroline Trickett, NP

Luiz Duque, RN

Nicole Reilly, RN

Christopher Saenz, BSN, RN
Interventional Endoscopy

Tyler Berzin, MD, MS
Director, Advanced Endoscopy Fellowship Program; Gastroenterology

Douglas Pleskow, MD
Emeritus Clinical Chief, Gastroenterology

Mandeep S. Sawhney, MD
Director, Therapeutic Endoscopy; Endoscopy Research; Gastroenterology
Radiation Oncology

Matthew Abrams, MD
Radiation Oncology

Raechel Perry, NP
Radiation Oncology
Radiology

Muneeb Ahmed, MD, FSIR
Chief, Vascular & Interventional Radiology; Vice Chair of Interventional Services; Diagnostic Radiology

Olga Brook, MD
Chief, Abdominal Radiology; Vice Chair of Research; Director of the Radiology Quality Academy; Interventional Radiology; Diagnostic Radiology

Seth J. Berkowitz, MD
Vascular & Interventional Radiology; Diagnostic Radiology

Abraham (Fourie) Bezuidenhout, MD
Diagnostic Radiology

Diana Dinh, MD
Vascular & Interventional Radiology; Diagnostic Radiology; Liver Tumor Clinic

Gerald Kolodny, MD
Nuclear Medicine; Diagnostic Radiology

Karen S. Lee, MD
Director, Radiology Fellowship Training Programs; Diagnostic Radiology

Katja De Paepe, MD
Diagnostic Radiology

Ammar Sarwar, MD, FSIR
Vascular & Interventional Radiology; Diagnostic Radiology; Liver Tumor Clinic

J. Anthony Parker, MD, PhD
Nuclear Medicine

Adeel Seyal, MD
Abdominal Imaging

Bettina Siewert, MD
Executive Vice Chair, Radiology; Diagnostic Radiology

Martin P. Smith, MD
Director of Community MRI; Interventional Radiology; Diagnostic Radiology

Jeffrey L. Weinstein, MD, FSIR
Radiology Vice Chair, Education and Lifelong Learning; Program Director, IR Integrated and Independent Residencies; Vascular & Interventional Radiology; Diagnostic Radiology; Liver Tumor Clinic; Boston Lymphatic Center

Jesse L. Wei, MD
Clinical Director of CT; Neuroradiology; Interventional Radiology; Diagnostic Radiology
Surgical Oncology

Umut Sarpel, MD, MSc, FACS, FSSO
Chief, Division of Surgical Oncology

Thomas E. Cataldo, MD, FACS, FASCRS
Colon & Rectal Surgery; Surgery

Kristen T. Crowell, MD, FACS, FASCRS
Colon & Rectal Surgery

Evangelos Messaris, MD, PhD, FACS, FASCRS
Chief, Colon and Rectal Surgery; Colon & Rectal Surgery; Surgery

Daniel Wong, MD
Colon & Rectal Surgery
Liver and Pancreas

Devin E. Eckhoff, MD, FACS
Chief, Transplant Surgery

David D. Lee, MD
Surgical Director of Liver Transplant

Vanessa L. Cowan, MD
Transplant Surgery

Martin J. Dib, MD, FACS
Director, Hepatobiliary Surgery, Director, Living Donor Liver Transplant Program

Amy R. Evenson, MD, MPH, FACS
Surgical Director of Kidney & Pancreas Transplant

Tara S. Kent, MD
General Surgery

Jeanne Quinn, MS, APRN-BC
Clinical Manager and Coordinator of Rectal Cancer Program

Mary Keane, RN
Pathology

Vikram Deshpande, MD
Director of GI Pathology; Director of Bone and Soft Tissue Pathology

Osman Yilmaz, MD
Director of Gastrointestinal and Liver Pathology Fellowship

Gamze Ayata, MD
Pathology

Kanchan Kantekure, MD
Pathology

Imad A. Nasser, MD
Director of Hepatobiliary Pathology

Yuho Ono, MD

Matthew Rosenbaum, MD
Pathology

Monika Vyas, MD
Director of Digital Pathology

Helen H. Wang, MD, MPH, DrPH

Omer H. Yilmaz, MD, PhD
Administrators

Logan J. Ruff
Program Coordinator

Sarah Cowen
Administrative Assistant
Clinical Pharmacy
