An NCI-designated Comprehensive Cancer Center
Yih Dar Nien

Yih-Dar Nien, M.D.

Surgeon; Surgical Oncologist
Clinical Expertise
  • Minimally Invasive and Single Site Laparoscopy
  • Abdominal Wall Reconstruction and Hernia Repair
  • Diverticular Disease
  • Hemorrhoids
  • Rectal Prolapse
  • Intestinal Obstruction
  • Wound Care
Assistant Clinical Professor, Division of Surgical Oncology, Department of Surgery
Other Languages Spoken
  • Mandarin
  • Spanish
  • Taiwanese

Clinical Teams

  • Surgery

Born in Taiwan and educated in Chile, Yih-Dar Nien, M.D., brings a unique perspective to his work at City of Hope’s Antelope Valley, Mission HIlls and Santa Clarita facilities. A talented surgeon, he connects easily with patients, conversing in their native language, be it Spanish, Mandarin or Taiwanese.

Dr. Nien specializes in minimally-invasive laparoscopy and a variety of abdominal and intestinal procedures.

After receiving his medical degree in Chile, Dr. Nien continued his training with an internship at University of Southern California in Los Angeles and residency at Marshall University in Huntington, West Virginia. At Marshall, Dr. Nien received no less than half a dozen honors and awards, including Resident of the Year and Excellence in Teaching.

Dr. Nien joined City of Hope in 2010.


15031 Rinaldi St., Suite 150

Mission Hills, CA 91345

23823 Valencia Blvd., Suite 250

Santa Clarita, CA 91355

44151 15th St. West

Lancaster, CA 93534

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