Our Physicians

David J. Cahn, MD


Dr. David J. Cahn is certified by the American Board of Urology and has been in private practice since 1999. He earned his medical degree at Albert Einstein College of Medicine in Bronx, New York and completed his Urology residency at Montefiore Medical Center in Bronx, New York. Dr. Cahn went on to complete a Fellowship in Neuro-Urology at the University of Colorado. He is a member of the American Urological Association, Colorado Medical Society, Clear Creek Valley Medical Society, and the Rocky Mountain Urological Society. Dr. Cahn's areas of interest include Urologic Oncology, Kidney Stone Disease, and Voiding Dysfunction. Read More

Derek K. Zukosky, DO


Dr. Zukosky has built his career around specializing in minimally invasive urological procedures to reduce risks to patients while providing the most benefits. To do so, Dr. Zukosky became certified in da Vinci robotic surgery and completed a fellowship in urologic laparoscopic surgery. One of the most experienced and highest trained robotic surgeons in the Denver area, Dr. Zukosky specializes in robotic prostatectomies and is the medical director of robotic surgery at St. Anthony Hospital.

Treating patients with all forms of urologic conditions, Dr. Zukosky is deeply committed to his osteopathic training, providing patients with all the benefits of contemporary medicine coupled with an intentional emphasis on prevention and wellness. This intentional philosophy to care led Dr. Zukosky to join Foothills Urology. Dr. Zukosky is a general urologist who finds satisfaction in helping patients with any type of urologic condition. He also has a special emphasis in prostate cancer, BPH, urinary stone disease, kidney cancer, urolithiasis, and men’s sexual health including erectile dysfunction. Read More

Diane M. Hartman, MD

Dr._Diane_ M_Hartman_Foothills_urology

One of the most experienced female urologists in the Denver area, Dr. Hartman’s compassion for patients and personalized, comprehensive care led to her being named a Top Urology Doctor by 5280 Magazine in 2012. She focuses on making patients feel heard and understood so that she can provide the best treatment for each patient, regardless of age or gender.

With extensive experience in urologic surgery including minimally invasive da Vinci robotic surgery, Dr. Hartman provides all types of treatments for kidney stone disease, prostate disease, urologic oncology, pelvic prolapse, and urinary incontinence. Dr. Hartman’s drive to provide the best treatment options for patients has led to numerous honors, including being named Surgical Intern of the Year during her time in the University of Colorado General Surgery Program. She is a thought-leader on robotic sacrocolpopexy, female urology, and robotic kidney surgery. Dr. Hartman is committed to offering the latest evidence-based advancements in treatment options, including brachytherapy and minimally invasive robotic surgery. Read More

Thomas M. Facelle, MD


Dr. Facelle joined Foothills Urology in 2015 as he was seeking a practice that combined his interest in providing compassionate care with his drive to offer a multimodal approach to all types of urological conditions. He prides himself on the fact that he can offer care to patients within 24 hours of contact, delivering timely treatment that not only addresses the underlying urological condition but also builds a trusting, empathetic relationship with his patients. Dr. Facelle’s unique background in behavioral health and psychiatry enable him to connect with patients on a deeper level as he can recognize and address emotional issues that regularly accompany urological problems. Read More

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