Meet Our Colon and Rectal Surgeons
Our Colorectal Surgery Team
![](/-/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
![Thomas Cataldo](/-/media/images/beth-israel-org/team-members/thomas-cataldo-80x100px.jpg)
Thomas E. Cataldo, MD
Colon & Rectal Surgery; Surgery
![Christian H. Corwin, MD](/-/media/images/beth-israel-org/team-members/christian-corwin-80x100px.jpg)
Christian H. Corwin, MD, FACS
Colon & Rectal Surgery
![Kristen T. Crowell, MD](/-/media/images/beth-israel-org/team-members/kristen-crowell--120x150.jpg)
Kristen T. Crowell, MD
Colon & Rectal Surgery
![Daniel Wong, MD](/-/media/images/beth-israel-org/team-members/daniel-wong-md-2023-80x100px.jpg)
Daniel Wong, MD
Colon & Rectal Surgery
Nurse Practitioners
![Stephanie DeMarino, NP](/-/media/images/beth-israel-org/team-members/stephanie-demarino-np-80x100px.jpg)
Stephanie DeMarino, NP
![Kristin Messer, NP](/-/media/images/beth-israel-org/team-members/kristin-messer-np-80x100px.jpg)
Kristin Messer, NP
![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)