Call Your Local Arizona Urology Specialists Office

Glendale: 602.375.1700

Arrowhead: 602.942.5600

Deer Valley: 623.582.6420

Grayhawk: 480.661.2662

Mesa: 480.834.4188

Peoria: 602.375.1700

Phoenix-Downtown: 602.264.4431

Scottsdale: 480.661.2662

Arizona Prostate Cancer Center – Phoenix: 602.557.0055

Arizona Prostate Cancer Center – Scottsdale: 602.557.0060


Dr. Koi’s areas of clinical specialty include urologic cancer, kidney stones, prostatic diseases, female urology (including incontinence), da Vinci Robot Surgical System, no-needle/no-scalpel vasectomy, in-office minimally invasive prostate procedures, and laparoscopic surgery.

He joined Arizona Urology Specialists in 2009 and was previously in practice at Canyon State Urology.

About Dr. Koi



Dr. Koi’s work has been published in numerous scientific publications including:

Mason BM, Koi PT, Hafron J, Milhoua P, Hoenig DM. Safety and efficacy of synchronous percutaneous nephrostolithotomy and contralateral ureterorenoscopy for bilateral calculi. J Endourol. 2008 May;22(5):889-93.

Milhoua PM, Koi PT, Lowe D, and Ghavamian R. Issue of prostate gland size, laparoscopic radical prostatectomy, and continence revisited. Urology. 2008 Mar;71(3):417-20.

Milhoua PM, Koi PT, Hakimi AA, Li M, and Ghavamian R. Laparoscopic nephrectomy for the management of renal medullary carcinoma in a child. J Pediatric Urol. 2008 Feb;4(1):90-2.

Sergeyev I, Koi PT, Jacobs SL, Godelman A, Hoenig DM. Outcome of percutaneous surgery stratified according to body mass index and kidney stone size. Surg Laparosc Endosc Percutan Tech. 2007 Jun;17(3):179-83.

Koi P, Milhoua PM, Monrose V, Disanto ME, Melman A. Expression of Myosin Isoforms in the Smooth Muscle of Human Corpus Cavernosum. Int J Impot Res. 2007 Jan-Feb;19(1):62-8.

Milhoua PM, Knoll A, Koi P, Hoenig D, and Ghavamian R. Laparoscopic pelvic nephrectomy in preparation for renal transplantationJSLS 2006 Oct-Dec;10(4):538-40.

Dr. Koi grew up in Southern California. He enjoys spending time with his wife and three children. Dr. Koi is an avid football and basketball fan.

Read More


  • Female Incontinence
  • Female Urology
  • General Urology
  • InterStim Neuromodulation Therapy for OAB
  • Kidney Stones
  • Laparoscopic Surgery
  • Minimally Invasive Surgery
  • Prostate Disease
  • Robotic surgery
  • Urologic Cancers
  • Vasectomy Including No-Scalpel


  • English
  • Mandarin Chinese

Education and Achievements

University of California Los Angeles, Los Angeles, California, undergraduate
Tufts University, Boston, Massachusetts, medical degree
Albert Einstein College of Medicine, New York City, New York, urology residency, surgical internship
American Board of Urology
American College of Surgeons
American Urological Association
Association of Clinical Urologists
Western Section American Urological Association
Phoenix Urological Society

Office Locations

Deer Valley

19841 N 27th Ave, Suite 201, Phoenix, AZ 85027, United States


5750 W. Thunderbird Rd., Suite B-200, Glendale, AZ 85306, United States


7747 W. Deer Valley Rd., Suite 235, Peoria, AZ 85382, United States

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