Dr. Timothy Lesser

Dr. Timothy Lesser
Dr. Timothy Lesser is a local product, born and raised in Manhattan Beach. He attended high school at Chadwick before graduating cum laude from Bowdoin College in Maine. He then attended medical school at the University of Southern California and completed his urology residency under the guidance of the legendary Dr. Jon Kaswick at Kaiser Permanente Los Angeles. Dr. Lesser’s focus is on combining proven oncologic principles with more modern, minimally-invasive surgical techniques. He was trained during the transition from traditional open surgery to minimally-invasive surgery (laparoscopy and robotics) for the management of urologic cancers. The foundations of cancer management began with his early training with Dr. Donald Skinner at USC, where he learned the open approach to the surgical management of bladder cancer. Throughout his training, he learned to treat all forms of urologic cancer using these principles translated to the laparoscopic and robotic arena. Dr. Lesser also remains on the cutting edge of treatments for common male urologic conditions. The paradigm for the management of benign prostatic hyperplasia has shifted away from the operating room and into the office, where newer modalities such as UroLift, Rezūm, and transurethral microwave therapy have allowed for continued excellent outcomes with remarkably simpler recoveries. Similarly, the treatment of erectile dysfunction is evolving, and Dr. Lesser combines the traditional treatments with newer methods such as GAINSWave. Dr. Lesser is currently the Chief of Urology at Providence Little Company of Mary Medical Center in Torrance and was previously an Associate Clinical Professor at Harbor-UCLA Medical Center. Like all the physicians at South Bay Urology, he is Board-Certified. He prides himself on providing the urologic care that he would want for himself or his family, from the simplest to the most complex conditions. His interests outside of urology include spending time and traveling with his wife and two children, ocean sports, snowboarding, swimming, hiking, and the outdoors.
Medical School:

University of Southern California


Kaiser Los Angeles


Bowdoin College

All surgical treatments have inherent and associated side effects. Individual’s outcomes may depend on a number of factors, including but not limited to patient characteristics, disease characteristics and/or surgeon experience. The most common side effects are mild and transient and may include mild pain or difficulty when urinating, discomfort in the pelvis, blood in the urine, inability to empty the bladder or a frequent and/or urgent need to urinate, and bladder or urinary tract infection. Other risks include ejaculatory dysfunction and a low risk of injury to the urethra or rectum where the devices gain access to the body for treatment. Further, there may be other risks as in other urological surgery, such as anesthesia risk or the risk of infection, including the potential transmission of blood borne pathogens. For more information about potential side effects and risks associated with Aquablation therapy for Benign Prostatic Hyperplasia (BPH) treatment, speak with your urologist or surgeon. Prior to using our products, please review the Instructions for Use, Operator’s Manual or User Manual, as applicable, and any accompanying documentation for a complete listing of indications, contraindications, warnings, precautions and potential adverse events. No claim is made that the AquaBeam Robotic System will cure any medical condition, or entirely eliminate the diseased entity. Repeated treatment or alternative therapies may sometimes be required.

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