Erik R. Noren, M.D., M.S. for UC Davis Health

Erik R. Noren, M.D., M.S.

Assistant Professor, Division of Colorectal Surgey

To see if Erik R. Noren is accepting new patients, or for assistance finding a UC Davis doctor, please call 800-2-UCDAVIS (800-282-3284).



Colon and Rectal Surgery

Colorectal Surgery


Minimally Invasive Surgery

Robotic Surgery



Locations and Contact

UC Davis Medical Center - Cypress Building

Cypress Building- Colon and Rectal Surgery Clinic
2221 Stockton Blvd.
Sacramento, CA 95817

Get Directions

Clinic Phone: 916-734-2680

Additional Numbers

Clinic Phone


Clinic Fax


Physician Referrals

800-4-UCDAVIS (800-482-3284)

Philosophy of Care

Dr. Noren provides compassionate, patient-centered surgical care in order to deliver the highest quality outcomes for his patients.

Clinical Interests

Dr. Noren is a board-certified and fellowship trained colorectal surgeon who specializes in minimally invasive treatment of diseases the colon and rectum. He has particular interest in advanced endoscopy and the treatment of colorectal cancer, as well as diverticulitis, inflammatory bowel disease and the treatment of pilonidal and anorectal disorders.

Research/Academic Interests

Dr. Noren’s research has focused on improving the quality of care for patients that undergo colorectal surgery.  Specific areas of interest include projects to reduce opioid medication usage in colorectal surgery, prevent surgical site infections, and evaluate approaches to endoluminal surgery.  He has written and contributed to numerous peer-reviewed publications and textbooks and is dedicated to the education and training of medical students and future surgeons.


Colon and Rectal Surgery

Center/Program Affiliation

UC Davis Comprehensive Cancer Center
Robotic Surgery Program

Undergraduate School

B.S., Biology, Human Physiology, University of Oregon, Eugene OR 2007

Medical School

M.D., Albany Medical College, Albany NY 2014

Other School

M.S., Physiology and Biophysics, Georgetown University, Washington DC 2009


General Surgery, University of Southern California, Los Angeles CA 2014-2015


General Surgery, University of Southern California, Los Angeles CA 2015-2020


Colon and Rectal Surgery, University of Southern California, Los Angeles CA 2020-2021

Wickham CJ, Wang J, Mirza KL, Noren ER, Shin J, Lee SW, Cologne KG. "Unresectable" polyp management utilizing advanced endoscopic techniques results in high rate of colon preservation. Surg Endosc. 2022 Mar;36(3):2121-2128. doi:10.1007/s00464-021-08499-7. Epub 2021 Apr 22. PMID:33890178.

Mirza KL, Wickham CJ, Noren ER, Shin J, Cologne KG, Lee SW. Full-Thickness Laparoendoscopic Excision for Management of Complex Colon Polyps. Dis Colon Rectum. 2021 Dec 1;64(12):1559-1563. doi:10.1097/DCR.0000000000002112. PMID:34596631.

Hum Yoon D, Mirza KL, Wickham CJ, Noren ER, Chen J, Lee SW, Cologne KG, Ault GT. Reduction of Opioid Overprescribing and Use Following Standardized Educational Intervention: A Survey of Patient Experiences Following Anorectal Procedures. Dis Colon Rectum. 2021 Sep 1;64(9):1129-1138. doi:10.1097/DCR.0000000000001970. PMID:34397561.

Mirza KL, Wickham CJ, Noren ER, Hwang GS, Ault GT, Ortega AE, Jafari MD, Cologne KG. Outcomes of colostomy takedown following Hartmann's procedure: successful restoration of continuity comes with a high risk of morbidity. Colorectal Dis. 2021 Apr;23(4):967-974. doi:10.1111/codi.15456. Epub 2021 Jan 19. PMID:33231908.

Noren ER, Wickham C, Lee SW. Current Techniques for Combined Endoscopic and Laparoscopic Surgery (CELS). ALES. 2019 Aug 21;4(77). doi:10.21037/ales.2019.05.07.

Tambe B, Wang CV, Noren E, Duldulao MP, Barzi A, Lee SW. Tertiary Care Multidisciplinary Teams Associated with Improved Survival in Rectal Cancer Patients: A Comparative Study. Am Surg. 2018 Oct 1;84(10):1645-1649. PMID:30747687.

Noren ER, Lee SW. Stapled Hemorrhoidectomy/-opexy. Scott-Conner C, Kaiser AM, Nguyen NT, Sarpel U, Sugg SL (eds). Chassin's Operative Strategy in General Surgery, 5th Ed, Springer, Cham, Switzerland. 2022:583–587.

Noren ER, Lee SW. Laparoscopic-Assisted Polypectomy. Bardakcioglu O (ed). Advanced Techniques in Minimally Invasive and Robotic Colorectal Surgery, 2nd Ed, Springer, Cham, Switzerland. 2019:1-8.

Noren ER, Lee SW. Surgical Management of the Polyposis Syndromes. Cameron JL, Cameron AM (eds).  Current Surgical Therapy, 13th Ed, Elsevier/Saunders, Philadelphia, PA. 2019:74-80.