UCI Health will see you now: Welcome to our new co-workers and patients from Fountain Valley, Lakewood, Los Alamitos and Placentia-Linda! 

Dr. Steven Mills, UCI Health colorectal surgeon

Steven D. Mills, MD


Colon & Rectal Surgery, General Surgery

Clinical Interests

colon, sphincter salvage (stoma avoidance), Crohn's disease, ulcerative colitis, diverticulitis, rectal prolapse, anal fistula/fissure/hemorrhoids, anorectal disease, colonoscopy

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  • American Board of Colon and Rectal Surgery, Colon and Rectal Surgery - General
  • American Board of Surgery, Surgery - General
  • English
Medical School
New York Medical College
Oregon Health Sciences UniversityGeneral Surgery
Oregon Health Sciences UniversityGeneral Surgery
USC University HospitalColorectal Surgery
Professional Positions
  • Professor — Division of Colon & Rectal Surgery, Department of Surgery, UCI School of Medicine
  • Core Clerkship Director — Department of Surgery
Awards and Recognition
  • Physicians of Excellence, Orange County Medical Association — 2018-2023
More Information

Dr. Steven Mills is a UCI Health surgeon who specializes in inflammatory bowel disease, colon and rectal cancers, colon and rectal surgery, including sphincter salvage techniques and management of benign anorectal disorders.

Mills received his medical degree from New York Medical College, Valhalla, N.Y. He completed residency training at Oregon Health & Science University in Portland, Ore., where he was a nine-time recipient of the university’s Recognition for Outstanding Service Excellence award. He then completed specialized fellowship training in colon and rectal surgery at the University of Southern California.

Mills is board certified in both general surgery and colon and rectal surgery, and he regularly performs laparoscopic colorectal surgery as well as robot-assisted rectal surgery. He is also active in clinical research focusing on outcomes measures for colon and rectal procedures and has made presentations at national and international meetings.

In 2006-2007, he received the UCI School of Medicine’s Associated Medical Students Golden Apple Award in recognition of outstanding teaching at UCI Medical Center. He has been awarded the Golden Scalpel Award for excellence in teaching in 2007, 2012-2014. In 2006, he was awarded the John E. Connolly Award for the outstanding professor of surgery.

UCI Health — Costa Mesa
1640 Newport Blvd.
Costa Mesa, CA 92627
Phone: 949-398-1440
Fax: 844-965-9446
UCI Health Chao Family Comprehensive Digestive Disease Center
101 The City Drive South, Building 22C
Orange, CA 92868
Phone: 888-717-4463
Fax: 855-813-0240
UCI Health Surgery Services
101 The City Drive South, Pavilion 3
Building 29
Orange, CA 92868
Phone: 714-456-7890
Fax: 855-209-8413