An NCI-designated Comprehensive Cancer Center

Jonathan N. Warner, M.D.

Urologic Surgeon
Clinical Expertise
Research Focus
  • Robotic Surgery
  • Abdominal and Perineal Reconstructive Urology
  • Men's Health, including: Benign Prostate Surgery, Incontinence
  • Hypogonadism, and Erectile Dysfunction
  • Urethral Stricture Disease
  • International Travel and Reconstructive Urology Education
Assistant Professor, Division of Urology and Urologic Oncology, Department of Surgery
Pasadena Patients: 626-218-9500

Clinical Teams

Jonathan “Nick” Warner, M.D., joined City of Hope in 2015 from the University of Michigan, where he was an assistant professor in the Department of Urology. Prior to that, he completed his fellowship in trauma and male reconstructive urology at the Detroit Medical Center, where he developed skills correcting injury and dysfunction to the urinary system.

Dr. Warner received his medical degree at the University of Utah School of Medicine and completed his urologic training at the Mayo Clinic in Phoenix.

Dr. Warner is an author of multiple publications and his ongoing research is in new techniques for urethral stricture repair and enlarged prostate surgery. His areas of expertise include urethral stricture disease, erectile dysfunction, Peyronie’s disease, male urinary incontinence, low testosterone and enlarged prostate.


412 W. Carroll Ave., Suite 200

Glendora , CA 91741

630 S. Raymond Ave., Suite 220

Pasadena, CA 91105

Book Chapters

Warner JN, Santucci RA.  Penis and scrotal anatomy. Glenn’s Surgical Atlas, 8th Ed, 2015.  Lippincott Williams and Wilkins.

In Progress

Mitomycin C prevents recurrence of bladder neck contractures, a comparative analysis.  Warner JN, Santucci RA

Internal urethrotomy is a good option for recurrent strictures after urethroplasty.  Warner JN, Santucci RA.

Video Publications

Tracey JM, Warner JN. Transurethral Bipolar Enucleation of the Prostate. First published January 2015. Videourology part b. doi: 10.1089/vid.2015.0040

Yi YA, Warner JN, SAntucci RA.  Robot assisted ureteral reimplant in a duplicated system. Accepted awaiting publishing.


In The News