Aaron Parrish, MD

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Dr. Parrish is a Colorectal Surgeon, specializing in colonoscopy, robotic abdominal procedures, and proctology. His passion for the field was developed as a surgical resident in Los Angeles.

"The training I received at an underserved county hospital in Los Angeles, allowed me to see patients with very advanced colorectal cancer. Many of these patients came to the hospital too late, after the cancer had spread. I wanted to help prevent this from happening as best I can, and treat patients with all kinds of colorectal cancer."

Dr. Parrish is originally from Saratoga, California. His father Richard Parrish, M.D. was a cardiologist at Good Samaritan Hospital. He returned to the South Bay Area with his wife Jennifer, now an intensive care physician at Good Samaritan Hospital, to start their family with daughter Ava.

He earned his bachelor’s degree in biopsychology at the University of California, Santa Barbara, graduating with high honors. He obtained his medical degree at the Tufts University School of Medicine in Boston, Massachusetts, and returned to California to complete his surgical residency at Harbor-UCLA Medical Center.

After training to become a Colorectal surgeon at Cedars Sinai Medical Center in Los Angeles, he returned to San Jose in 2019 to serve his hometown community.

In residency and fellowship, Dr. Parrish has numerous presentations and publications; selected publications below:

• Parrish AB, Lopez N, Zaghiyan Z, Fleshner P. et al. Preoperative Serum Vedolizumab Levels Do Not Impact Postoperative Outcomes in Inflammatory Bowel Disease. Accepted for publication. DCR. In Press
• Parrish AB, Zaghiyan K, Fleshner P. Laparoscopic Colectomy in Inflammatory Bowel Disease: Indications and Special Considerations. Ann Laparosc Endosc Surg 2019;4:13
• Parrish AB, O’Neill SM, Crain SR, Russell TA, Sonthalia D, Nguyen V, Aboulian A. An Enhanced Recovery After Surgery (ERAS) Protocol for Ambulatory Anorectal Surgery Reduced Postoperative Pain and Unplanned Returns to Care After Discharge. World J Surg. 2018 Jan 9
• Parrish AB, Sanaiha Y, Petrie BA, Russell MM, Chen F. Examining the Quality of Rectal Cancer Operative Reports in Teaching Institutions: Is There an Opportunity for Resident Education? Am Surg. 2016 Oct;82(10):1023-1027