Division of Surgical Oncology

Patient Care  |  Education   |  Research  |  Faculty  |  Contact  |  Support

Columbia’s Division of Surgical Oncology is dedicated to leading the field of cancer surgery through top-quality clinical care, academic excellence, and pioneering research.

Patient Care

Columbia’s Division of Surgical Oncology offers patients a comprehensive and multidisciplinary approach to the diagnosis, treatment, prevention, and recovery from sarcoma, gastrointestinal stromal tumors (GISTs), other soft tissue tumors, stomach and gastroesophageal junction cancer, other gastrointestinal tumors, melanoma, neuroendocrine tumors, spleen tumors, and lymphoma. We bring our patients the full range of surgical procedures and techniques, and as part of Columbia’s Herbert Irving Comprehensive Cancer Center, we also offer a collection of nonsurgical programs designed to help guide and support our patients through every step of their diagnosis, treatment, and recovery. Some of our state-of-the-art offerings include proton beam radiation and aggresive surgery for sarcomas, and minimally invasive robotic gastrectomy for stomach cancer.

If you or a loved one is interested in getting help from us, learn more about our patient services on our clinical care site:

Surgical Cancer Care
Sarcoma Care Program
Gastric Cancer Care Program
Melanoma Center
Herbert Irving Comprehensive Cancer Center

Patients can reach our clinical services at (212) 305-0273 or request an appointment online.


Education & Training

Academics and mentorship are central to our goal of providing the best care possible. We dedicate substantial resources toward ensuring the next generation of medical professionals has the resources and knowledge they need to continue advancing surgical oncology care. Learn more about our educational and training programs:

Resources for Students & Professionals
Continuing Medical Education Events

Watch our recent webinar for medical professionals on Multidisciplinary Management of Gastric Cancer:



Through research and clinical trials, we are continually seeking to advance the science of cancer care. This allows us to gain a better understanding of these disease so that we can develop safer and more effective treatments.


Dr. Sandra Ryeom and Dr. S. Sunghyun Yoon also belong to the Gastroesophageal Malignancies Investigator Network Initiative or GEMINI. GEMINI is a consortium of academic scientists and oncologists who are working to discover new therapies for gastroesophageal cancer.

Stand Up To Cancer

Surgeons and scientists in Columbia’s Department of Surgery are advancing efforts for early detection of gastric cancer for tomorrow's patients, while providing the best possible care for today's patients. A team of Columbia’s researchers and physicians, co-led by Sandra Ryeom, Ph.D., Associate Professor in the Division of Surgical Sciences and including Dr. S. Sunghyun Yoon, Chief of the Division of Surgical Oncology and an international, interdisciplinary team of experts in gastric cancer, advanced imaging, & molecular biomarkers were recently awarded a $3 million Stand Up To Cancer (SU2C) grant (https://standuptocancer.org/research/research-portfolio/research-teams/gastric-cancer-interception-research-team/) to analyze novel diagnostic tests that can detect gastric cancer earlier than current modalities.

Learn more about our current clinical trials:

Faculty and Affiliated Faculty

Dr S. Sunghyun YoonS. Sunghyun Yoon, MD
Chief, Division of Surgical Oncology


Sandra Ryeom, PhD
Associate Professor, Division of Surgical Sciences

Steve Kwon, MD, MPH, MBA
Assistant Clinical Professor of Surgery

Administrative Contact

Ivelisse “Evie” Guzman‌
Administrative Coordinator, Surgical Oncology
Phone: (212) 305-0273
Fax: (646) 317-1294
Email: surgonc@cumc.columbia.edu

Support Our Division

Your support is vital to helping us expand our services, continue our groundbreaking research, and offer as many patients as possible access to quality care. We rely on donations from both individuals and organizations year round in order to advance our patient care programs, as well as our many research, fellowship, and educational initiatives. Learn how you can partner with us by providing vital funding for our work:

Ways to Help

More Contacts & Locations

Surgical Cancer Care Patient Site

Appointments: (212) 305-0273
Request an Appointment

Washington Heights-NYP/Columbia University Irving Medical Center (Main Campus)

Milstein Hospital Building, 7-002
177 Fort Washington Ave
New York, NY 10032
Clinic hours every Thursday

Bronxville-NewYork-Presbyterian Westchester

1 Pondfield Road
Bronxville, NY 10708
Clinic hours on the 2nd and 4th Wednesdays of the month

Hudson Valley-NYP/Hudson Valley Hospital

1985 Crompond Road, Building E
Corlandt Manor, NY 10567
Clinic hours on the 1st and 3rd Wednesdays of the month

Englewood Office/Holy Family Medical Center

25 Rockwood Place, Suite 330
Englewood, NJ 07631
Clinic hours on the 2nd and 4th Wednesdays of the month

Columbia Surgery Outpatient Offices at Glenpointe

300 Frank W Burr Blvd, Suite 130
Teaneck, NJ 07666