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Who We Are

About the Division of Colon and Rectal Surgery at UMass Chan Medical School

Director’s message

The Colon and Rectal Surgery Fellowship at UMass Chan Medical School is a one-year fellowship accredited by the Accreditation Council for Graduate Medical Education. The fellowship received initial accreditation in 2011 and matriculated our first fellow in 2012. Eligible candidates must have completed an ACGME-accredited general surgery residency and be eligible for the American Board of Surgery qualifying and certifying exams. The Division of Colon and Rectal Surgery in the Department of Surgery comprises five board-certified colon and rectal surgeons, three nurse practitioners, and an inpatient physician assistant. Division faculty are very active in the American Society of Colon and Rectal Surgeons and hold leadership positions within the society. Several faculty are on the editorial board of the society’s primary journal Diseases of the Colon and Rectum.  The fellow will gain knowledge, experience and expertise in the management of the essential components of anorectal and major abdominal surgery, endoscopy and office management of common anorectal conditions during the year-long clinical fellowship.  The fellow will also gain significant experience in advanced minimally invasive approaches, including Transanal Endoscopic Microsurgery (TEM), robotic assisted approaches, and Transanal TME (TaTME). In addition to the diverse clinical experience, the fellow will be expected to engage in scholarly activity, including completion of a clinical research project culminating in submission of a completed manuscript. This research experience is supported through the division by the Colon and Rectal Surgery Research Core comprising the four faculty members; a fully funded research resident; a clinical research coordinator; a data analyst; and a statistician. The overall aim of the fellowship is to graduate well-rounded surgeons and leaders who will advance the field of colon and rectal surgery through research and investigation.   

Karim Alavi, MD
Associate Professor of Surgery
Director, Colon and Rectal Surgery Fellowship
Director, Department of Surgery Research Core


Mission

Our four-part mission statement encompasses the goals of the UMass Memorial Division of Colon and Rectal Surgery at UMass Chan Medical School and UMass Memorial Medical Center:

  1. Providing exceptional, state-of-the-art care for our patients
  2. Educating medical students, residents and practicing physicians
  3. Advancing the field of colorectal surgery through research and investigation
  4. Serving as an educational resource and advocate for the Central Massachusetts community

Faculty


Coordinator

Katie Schiavone


Physician extenders

Katelyn Stickney, FNP, clinical coordinator

Dorcas Taylor, FNP

Tiffany Vo, PA

Jennifer Guertin, PA


Current Fellow

Carlos Fairen Oro, MD

Our current fellow, Carlos Feiren Oro, MD grew up in the sunny city of Valencia, Spain where he obtained his MD degree at the University of Valencia. He moved to the United States after graduation and matched into residency at John Hopkins Hospital where he did his first 2 years of general surgery residency and finished his training at Boston University Medial Center. He joined UMass as the colon and rectal surgery fellow in August 2025. Dr. Fairen's mission is to provide excellent care and improve access to vulnerable populations. His research has been focused on social determinants of health and disparities in colorectal surgery. His work has been puplished in multiple high impact journals including Diseases of Colon and Rectum (DCR) and presented in multiple national meetings. He is a member of the Excellence, Empowerment and Accessibility (EEA) committee at ASCRS. He is also an avid padel player, a racquet sport that he has been playing for 20 years.


Alumni

Name

Residency

Current Location

Jennifer S. Davids, MD

2013 Graduate

Brigham and Women’s Hospital

System Chief, Colon and Rectal Surgery at Boston Medical Center Health System

Erica B. Sneider, MD

2014 Graduate

UMass Chan Medical School

Colon and Rectal Surgical: A Division of ProHEALTH Care, Lake Success, New York

Pasithorn Suwanabol, MD

2015 Graduate

University of Wisconsin

Assistant professor of surgery, University of Michigan, Ann Arbor, Michigan

Andrew T. Schlussel, DO

2016 Graduate

Tripler Army Medical Center

Assistant professor of surgery, Madigan Army Medical Center, Tacoma, Washington

Uma Phatak, MD

2017 Graduate

University of Texas at Houston

Assistant professor of surgery, University of Texas, Galveston, Texas

Cristina Harnsberger, MD

2018 Graduate

University of California San Diego

Sansum Clinic Multi-Specialty Clinic, Santa Barbara, California

Clayton Tyler Ellis, MD

2019 Graduate

University of North Carolina

Assistant professor of surgery, University of Louisville, Louisville, Kentucky

Sue Jean Hahn, MD

2020 Graduate

Mount Sinai Hospital (N.Y.)

Assistant professor of surgery, Mount Sinai Hospital, New York, New York

Jeremy Springer, MD

2021 Graduate

McMaster University in Hamilton Ontario, Canada

McMaster University, Hamilton Ontario, Canada

John R. Konen, MD

2022 Graduate

University of Vermont Medical Center (Vermont)

Assistant Professor of Surgery, Rush Medical Center, Chicago, Illinois

Dong (Don) Yoon, MD

2023 Graduate

University of Southern California in Los Angeles, California

General and Colorectal Surgeon
St. Jude Medical Center

Samatha Rivard, MD

2024 Graduate

University of Michigan Medical School

Boston Medical Center

Frances Hu, MD

2025 Graduate

Brigham and Women's Hospital Boston

Northside Hospital: Georgia Colon & Rectal Surgical Associates

Contact us for more information