About Me

Dr. Alessio Pigazzi is a board-certified colorectal surgeon who specializes in minimally invasive colon and rectal surgery, including laparoscopic, robot-assisted and endoscopic techniques.

He earned a joint medical degree and PhD in biochemistry at Boston University School of Medicine. He completed an internship and residency in general surgery at New York-Presbyterian/Weill Cornell Medical Center. He completed a fellowship in minimally invasive surgery at Hackensack Medical Center in Hackensack, New Jersey, and a fellowship in colorectal surgery at the University of California, Irvine Medical Center.

Dr. Pigazzi performed the world's first robot-assisted total mesorectal resection for rectal cancer, a procedure that results in faster recovery, better cosmesis, and improved preservation of sexual function. His research has been published in multiple peer-reviewed journals and he has authored, co-authored numerous chapters in medical textbooks.

He currently services as Professor in the Department of Surgery; Vice-Chair for Research; and Chief of the Division of Surgical Oncology within the Department of Surgery at the University of California, Irvine Medical Center. He is a fellow with the American College of Surgeons (ACS) and Society of Surgical Oncology (ASC) in addition to membership of multiple medical associations.

Areas of Interest:

  • Colorectal cancer
  • Hyperthermic intraperitoneal chemotherapy (HIPEC)
  • Cytoreductive surgery
  • Colon, rectal and anal cancer
  • Hernia surgery
  • Colon and rectal polyps
  • Rectal-urethral and vaginal fistulas
  • Transvaginal colectomies

Awards and Recognition:

  • Best Doctors in America® (Colon & Rectal Surgery), 2013, 2015, 2016
  • Physicians of Excellence, Orange County Medical Association — 2020
  • Resident Achievement Award — Society of American Gastrointestinal and Endoscopic Surgeons, 2002
  • Alpha Omega Alpha — Honor Medical Society, 1998
  • Savenor Prize for Student Excellence in Surgery — Boston University, 1998
  • American Heart Association Student Research Fellowship, 1992-1993
  • Karen Grunebaum Research Award — Boston University, 1993
  • Betty Lea Stone, American Cancer Society Student Research Award, 1992



English, Italian, Spanish

Provider Specialty

Colon & Rectal Surgery, General Surgery


Medical Education

Boston University School of Medicine


New York-Presbyterian Hospital

Fellowship - Minimally Invasive Surgery

Hackensack University Medical Center

Fellowship - Colon & Rectal Surgery

University of California - Irvine

Locations & Affiliations


Todd Cancer Pavilion

2810 Long Beach Blvd.

Long Beach, CA

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Orange 333 City Blvd West

333 City Blvd West

Orange, CA

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