Surgeon Garrett Nash

Garrett M. Nash, MD, MPH, FACS, FASCRS



Vice Chair for Quality and Safety, Department of Surgery

Clinical Expertise

Gastrointestinal Cancers; Carcinoid/Neuroendocrine Tumors; Peritoneal Surface Malignancies; Pseudomyxoma Peritonei; Mesothelioma; Minimally Invasive and Robotic Surgery;Intraperitoneal Chemotherapy; Clinical Trials in Surgery

New Patient Appointments

Scheduling a visit is easy. Click below or call us to get started.

Accepted Insurance Providers

Dr. Nash accepts the following list of insurance providers. Select your insurance provider to see more details.

Contact and Location

Locations map

Find a Convenient Location

Memorial Sloan Kettering has locations throughout New York City, Long Island, New Jersey, and Westchester. These locations offers many services, including screening, chemotherapy, and medical testing.

About Me


MD, Columbia University


Surgery - University of Massachusetts Medical School; Surgery - New York Presbyterian/Weill Cornell Medical College


Colon and Rectal Surgery – NewYork-Presbyterian/Columbia and Weill Cornell; Colorectal Oncology - Memorial Sloan Kettering Cancer Center

Board Certifications

Surgery; Colon and Rectal Surgery

I am a surgeon with specialized training in cancers of the colon, rectum, anus, appendix, and peritoneum. The focuses of my practice include minimally invasive techniques for colorectal cancer (including laparoscopy, single-incision laparoscopy, and robotic surgery), avoiding colostomy while preserving bowel, bladder, and sexual function, and the management of peritoneal surface malignancies (including pseudomyxoma peritonei and mesothelioma).

My clinical research involves prospective clinical trials of new technology and surgical techniques for advanced colorectal, appendiceal, and peritoneal malignancies, as well as optimizing surgical margins and lymph node retrieval for colon and rectal cancers.  I am the primary investigator for the ICARuS Trial (Intraperitoneal Chemotherapy After cytoReductive Surgery). This is a randomized clinical trial investigating the benefit of intraperitoneal chemotherapy for metastatic appendiceal and colorectal cancer.  It will be the first-ever prospective trial with the primary goal of measuring the efficacy of intraperitoneal chemotherapy for appendix cancer worldwide and the first randomized trial of intraperitoneal chemotherapy for colorectal cancer in the United States.

I have authored papers on a variety of subjects including cytoreductive surgery, intraperitoneal chemotherapy, minimally invasive surgery, sphincter-sparing rectal surgery, mechanisms of tumor progression, and predictors of outcome following surgery.

I have raised over $75,000 to support cancer research at Memorial Sloan Kettering by completing eleven races for Fred’s Team —  NYC Half Marathons each year from 2010 through 2014 and  NYC Marathons in 2010, 2011, 2013, 2014, 2015, and 2017. This November, I will be running the NYC Marathon to raise money for cancer research at MSK.

If you wish to make a donation for cancer research or learn more about Fred’s Team, please visit this website: Garrett Nash on Fred’s Team.

Awards and Honors

  • Castle Connolly: New York Magazine Best Doctors (2017-2018)
  • Castle Connolly: America's Top Doctors (2016-2018)
  • Castle Connolly: America's Top Doctors for Cancer (2016-2018)


Doctors at Memorial Sloan Kettering work as teams, with specialists from all different areas. This allows us to consider all your needs together, and to give you the best possible care.

Clinical Trials

Smiling doctors in the lab

Find a Clinical Trial for You

Memorial Sloan Kettering's doctors and scientists are constantly developing new treatments for cancer. MSK is typically running hundreds of clinical trials at a given time.

You may be able to participate in a clinical trial even if you are new to MSK. Search our online directory to find trial information and see more about who can participate.

Research and Publications

Publications on PubMed

Visit PubMed for a full listing of Dr. Nash’s journal articles. Pubmed is an online index of research papers and other articles from the US National Library of Medicine and the National Institutes of Health.