Meet Our Colorectal Cancer Specialists
Colorectal Cancer Treatment Team
Colorectal Surgery
![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
Nurse Practitioner
![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
Nurse Navigator
![Learn more about Mary Keane](/-/media/images/beth-israel-org/team-members/female-80x100/mary-keane-80x100.jpg)
Mary Keane, RN
Radiation Oncology
![](/-/media/images/beth-israel-org/team-members/center-and-department/radiation-oncology/matthew-abrams.jpg)
Matthew Abrams, MD
Radiation Oncology
Medical Oncology
![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
![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
Diagnostic Radiology (Colorectal)
![](/-/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
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
![Osman Yilmaz, MD - Photo Unavailable](/-/media/images/beth-israel-org/team-members/center-and-department/osman-yilmaz-md-80x100px.jpg)
Osman Yilmaz, MD
Director of Gastrointestinal and Liver Pathology Fellowship
![Gamze Ayata, MD](/-/media/images/beth-israel-org/team-members/ayata-gamze.jpg)
Gamze Ayata, MD
Pathology
![](/-/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
Advanced Endoscopy
![](/-/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