Sanghyun A Kim
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Sanghyun A Kim, MD

Colon and Rectal Surgery / Proctology

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About Me

Dr. Sanghyun (Alex) Kim is an Associate Professor of Surgery at the Icahn School of Medicine at Mount Sinai and the Site Chief of Colon and Rectal Surgery at Mount Sinai Beth Israel, Mount Sinai Downtown-Union Square, and Mount Sinai Morningside.

Dr. Kim received a Doctorate of Medicine degree from Downstate Medical Center in Brooklyn. He completed a general surgery residency at SUNY Health Science Center in Brooklyn followed by a fellowship in colon and rectal surgery at The Mount Sinai Hospital. He began his career at Mount Sinai in 2005 as an Assistant Professor.

Specializing in robotic, laparoscopic, and trans-anal surgical techniques, Dr. Kim has been instrumental in revitalizing and growing the downtown colorectal surgery program since becoming Site Chief of Mount Sinai Downtown in 2018. In his additional role as Site Chief of Colon and Rectal Surgery at Mount Sinai Morningside, he will expand and mature Mount Sinai’s Advanced and Robotic Coloproctology Program (ARC Program), and strengthen the division’s partnerships with local and system level programs such as bloodless surgery and robotic surgery. In addition to his clinical and administrative duties as Site Chief, Dr. Kim will continue to host fellows from Mount Sinai’s colon and rectal surgery, gastroenterology, and gynecology-oncology surgery fellowship programs.

As Site Chief of both MSBI and MSM, Dr. Kim is energized to further improve patient experiences by providing seamless care to both our downtown and uptown communities.



“The team at Mount Sinai saved my life,” says Capri, a 68 year old competitive swimmer who had six surgeries in one year, due to a gastrointestinal emergency. Read more about her journey back to health thanks to Dr. Kim and his team.

Dr. Kim was recently featured in the Metro NY "Ask Mount Sinai" column. Click here to read his advice on protecting yourself from colon cancer. 

Dr. Kim discusses common conditions including hemorrhoids and fecal incontinence on HellasFM Radio and describes how surgery may be an option for treatment.

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Hospital Affiliations
  • Mount Sinai Beth Israel
  • Mount Sinai Morningside
  • Mount Sinai Brooklyn
  • Mount Sinai Queens
  • The Mount Sinai Hospital
  • New York Eye and Ear Infirmary of Mount Sinai
  • Mount Sinai West