Strength in
Men's Health
We offer treatment for the full spectrum of male urologic conditions.

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Combining Minimally Invasive Urologic Treatments with Expert Care
Over 30 million men currently suffer from prostate, testicular, and men's health problems that significantly impair their quality of life. Loma Linda University Medical Center Department of Urology offers solutions to these problems. Some of these issues include:
- Elevated PSA
- Prostate cancer
- Low testosterone
- Erectile dysfunction
- Vasectomy and Vasectomy Reversal
- Urinary problems
- Slow stream
- Poor urine control
- Nighttime urination
- Blood in urine
By combining minimally invasive treatments with comprehensive care, our experts provide access and further the commitment of whole person wellness at Loma Linda University Medical Center.
Meet Our ProvidersDedicated to improving your quality of life
Take Risk AssessmentUrology FAQ
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What is erectile dysfunction? -
Can erectile function be restored? -
What is urinary incontinence? -
How is incontinence or decreased stream diagnosed and treated? -
What are the signs and symptoms of prostate cancer? -
What are the treatment options for a man if diagnosed with prostate cancer?
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What is erectile dysfunction?
Erectile dysfunction is the inability to maintain an erection sufficient for sexual intercourse. There are many causes of erectile dysfunction, some of which include vascular disease, neurologic problems, diabetes, smoking, medication, previous surgery or psychological factors. There are many successful treatments for erectile dysfunction.
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Can erectile function be restored?
Yes, with the current treatment options, most men who desire to restore erectile function should be able to do so. The treatment of erectile dysfunction depends upon the cause, and is influenced by the patient’s age or other medical problems. Treatment options include medication, testosterone replacement therapy, vacuum erection devices, injections or surgical implants.
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What is urinary incontinence?
Urinary incontinence is not having control of your bladder leading to leaking urine and social distress. Urinary incontinence is caused by either the bladder overreacting or the control muscles not being active enough.
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How is incontinence or decreased stream diagnosed and treated?
Treatment for urinary incontinence or decreased stream depends upon its cause. The urologist will review the patient history and perform tests to measure bladder function to determine the type of problem. Once the cause of the urinary problem is determined, a treatment plan can be put in place. Treatment ranges from surgery, pelvic floor exercises or medication depending on the diagnosis.Treatment will address the bladder’s over activity (ability to hold urine) or the function of the urinary sphincter (closure valve).
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What are the signs and symptoms of prostate cancer?
Early prostate cancer seldom causes any symptoms or noticeable changes in urinary habits. Symptoms could include frequent nighttime urination, a weak urinary stream and strong urges to urinate. Some symptoms are unique to advanced prostate cancer, such as bone pain, which happens if the cancer has spread to the bones. Since there are seldom symptoms, it is important to be checked with prostate specific antigen (PSA, a blood test), starting between the ages of 40 - 55, depending on risk factors, to promote early diagnosis. Elevated PSA levels can indicate prostate cancer. Currently, the PSA blood test is the most important factor in diagnosing prostate cancer. Prostate cancer is highly curable with early diagnosis.
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What are the treatment options for a man if diagnosed with prostate cancer?
No single treatment is right for every patient. We believe that prostate cancer treatment should be individualized to each patient.
Treatment depends upon many factors: the patient’s age, tumor characteristics, results of the biopsy, whether or not lymph nodes or bone are involved, the patient’s general health and the patient’s preference for treatment. The three basic treatments are:
- Hormonal therapy is a medication that can be used either with radiation therapy to treat cancer that remains following radiation or surgery, or to treat symptoms of prostate cancer that have spread from the prostate to other sites.
- Proton therapy can be performed by x-rays (proton) or by “seeds” that are implanted in the prostate. It can be used as a primary treatment or to treat cancer remaining after surgery.
- Robotic surgery (the standard) to cure prostate cancer is called a radical prostatectomy. The prostate, the seminal vesicles (which lie along the side of the prostate) and possibly the pelvic lymph nodes are removed. A minimally invasive prostate cancer surgery (robotic prostatectomy) is now available, most patients are able to go home the next day.
Meet Our Providers
All of our urologists have many areas of expertise and specialization within the field of urology.
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Duane Baldwin, MD
Professor, Department of Urology Director of Urology Research Program Director Endourologic Fellowship
Dr. Baldwin’s research has led to his recognition as a thought leader in minimally invasive surgery and stone disease. He specializes in advanced techniques in robotic and laparoscopic stone surgery.
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Gary Barker, MD
Assistant Professor, Department of Urology
Dr. Barker specializes in the treatment of bladder dysfunction procedures for the treatment of both male and female urinary incontinence. He also performs reconstructive surgery of the urethra and treats pelvic organ prolapse.
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David Benjamin, MD
Assistant Professor, Department of Urology
Dr. David Benjamin is a general urologist with a wide variety of experience in any areas of urology. He has expertise in advanced prostate biopsy techniques and minimally invasive prostate treatments that can be performed at our clinic.
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Mark Dickinson, MD
Assistant Professor, Department of Urology
Dr. Dickinson is a urologist specializing in the treatment of bladder and erectile dysfunction. He has specific expertise in the placement of bladder stimulator devices.
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Dean Hadley, MD
Assistant Professor, Department of Urology
Dr. Hadley is a general urologist with a wide variety of experience in all areas of urology. Dr. Hadley has expertise in endoscopic and in office urology procedures.
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Roger Hadley, MD
Professor, Department of Urology Dean of Loma Linda University School of Medicine
Dr. Hadley is widely recognized for his research and clinical expertise in female urinary incontinence and for his experience and contributions to medical education.
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Mohammad Hajiha, MD
Assistant Professor, Department of Urology
Specialty expertise in minimally invasive surgery, robotic surgery, stone disease
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Brian Hu, MD
Urology Residency Associate Program Director Assistant Professor, Department of Urology
Dr. Hu is a urologist specializing in urologic oncology and robotic surgery, treating conditions such as bladder cancer, kidney cancer and prostate cancer.
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Edmund Ko, MD
Urology Residency Program Director Associate Professor, Department of Urology
Dr. Ko specializes in the treatment of male infertility and sexual dysfunction, including hormonal disorders, erectile dysfunction, microsurgery and andrology.
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Paul Lui, MD
Associate Professor, Department of Urology
Dr. Lui specializes in urologic oncology. He has expertise in advanced prostate biopsy and ultrasound techniques.
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Herbert Ruckle, MD
Professor and Chair, Department of Urology
Dr. Ruckle is the director of the Loma Linda University Medical Center robotic surgery program. He specializes in urologic oncology which includes prostate, bladder, penis, renal pelvis, testicular and kidney cancers.
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Humberto Villarreal, MD
Assistant Professor, Department of Urology
Specialty expertise in reconstruction of urinary tract strictures and fistulas, penile implants, artificial urinary sphincters, Men's Health, Sexual Medicine, enlarged prostate, robotic surgery
Research-driven Expertise
Our team is committed to participating in research and staying on the cutting edge in the fields of urology and men’s health. This commitment to progress paired with the academic, research education focus of Loma Linda University Medical Center has our department leading the way for advanced urologic care.
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