Dr. Michael J. Lazar is retired. His medical practice is now closed.

Urology and minimally invasive prostate cancer therapy

Northern California Medical Associates and urologist Michael J. Lazar, MD, offer Sonoma County’s premier center for urologic specialty healthcare. Dr. Lazar provides diagnostics, treatment, and management of a full spectrum of urologic health conditions. In addition to general urologic medicine services, Dr. Lazar has expertise and special interest in urologic oncology, benign prostatic hyperplasia (BPH) stones, and erectile dysfunction. Along with this essential role in the quality of available urologic care in Northern California, Dr. Lazar’s contributions to the advancement in the treatment of prostate cancer with high-intensity focused ultrasound (HIFU) technology is making it possible for patients with earlier stages of the disease to maintain their quality of life without surgery.

For more information, please visit Dr. Lazar’s California HIFU website.

Michael Lazar, MD

Michael J. Lazar, MD

Dr. Lazar graduated from the University of Arkansas in 1978 and completed postgraduate training in surgery and urology at LSU in 1983. He is four-time board-certified by the American Board of Urology, and is the managing physician director of Santa Rosa Surgical Management Co., LLC, which manages Santa Rosa Memorial Hospital’s Ambulatory Surgery Center. He also serves as the chairman of the Board of Directors of Redwood Health Services and as a member of the American Urological Association. Dr. Lazar operates California HIFU in Santa Rosa, and works as an instructor for International HIFU, Inc., teaching students and urologic surgeons about the benefits of HIFU technology.

Services offered

Male and female voiding problems (voiding dysfunction)
Urologic oncology
Kidney stones
Urinary incontinence

Male and female voiding problems

Voiding dysfunction results from a lack of coordination between the urethra and the bladder, and it can affect both sexes. When the urethra cannot relax properly, urine flow cannot pass freely and in some cases it can be completely blocked. Voiding dysfunction can cause great discomfort in suffering patients, but experienced urologists like Dr. Lazar are equipped with the latest medical knowledge to provide relief.

Urologic oncology

Genitourinary cancers occur in the urinary tract, prostate, testicles, kidneys, penis, and bladder. With the latest in image testing and computed tomography, NCMA and Dr. Lazar strive to catch these cancers early to promise the best possible prognoses for afflicted patients.

Dr. Lazar offers advanced treatment for a full spectrum of genitourinary cancers including:

  • Bladder cancer
  • Kidney (renal cell) cancer
  • Prostate cancer
  • Penile cancer
  • Tumors in the male reproductive system and urinary tract
  • Testicular cancer
  • Ureter cancer
  • Urethral cancer

Kidney stones

Kidney stones are one of the most common and most painful urinary problems, and nearly 10 percent of Americans will develop them during their lifetimes. To make matters worse, once you’ve had a kidney stone in the past, the chances of having another increase dramatically. Dr. Lazar specialize in treating kidney stones with medication and/or minimally invasive surgical techniques, and in helping patients prevent the recurrence of kidney stones with changes in diet, lifestyle, and/or medical therapies.

Most small kidney stones will pass spontaneously during urination and can be managed with medication to increase to speed of spontaneous passage (expulsion therapy). In the meantime your urologist may prescribe pain killers and/or anti-nausea medication to make you as comfortable as possible. For larger stones, surgical procedure may be necessary to clear the obstruction. Dr. Lazar offers surgical treatments for kidney stones including shockwave lithotripsy (SWL), ureteroscopy, and laser lithotripsy.

Urinary incontinence

While urinary incontinence is more common in women than in men, both sexes can experience loss of bladder control at any age. An often embarrassing problem, urinary incontinence can have a profound impact on one’s quality of life. There are many causes of urinary incontinence, but careful study of a patient’s bladder control loss and a full battery of diagnostic tests can help specify the exact cause in each case.

Depending on the cause, there are a variety of effective treatments for urinary incontinence, ranging from basic exercises that can be done in the home, to medications, dietary modifications, and mild surgical procedures. Dr. Lazar is committed to finding the best personalized treatment plan for each individual patient.


Michael J. Lazar Urology

1140 Sonoma Avenue, Suite 1A
Santa Rosa, CA 95405
Fax: 707-546-0725