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Surgeons, Physician Assistants and Nurse Practitioners:

Robert B. Bailey, MD, FAAP
Luis R. Argueso, MD, FAAP
Michael L. Ritchey, MD, FAAP
Michael T. Nguyen, MD
Zachary V. Zuniga, MD
Marilyn L. Tigges, PA-C
Kelly M. Parker, PA-C
Karen R. Dunivant, CPNP

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Pediatric Urology Associates Information

Pediatric Urology Associates is committed to providing the highest quality urological care to the children of Arizona and the Southwestern United States. Our surgeons are all fully-qualified fellowship-trained pediatric urologists. They are recognized for their special expertise in treating the urological problems of neonates, infants, children and teenagers. Pediatric Urology Associates is the largest pediatric urology specialty group in the Southwestern United States. Through their hard work and dedication to treating the urological conditions of children, our pediatric urologists have made Pediatric Urology Associates one of the most respected children’s surgical practices in the United States. All of our surgeons hold teaching appointments with the Mayo Clinic College of Medicine and are actively involved in the education of young surgeons and pediatricians. Through their research and publications in the field of pediatric urology, our children urologists have contributed to the advancement of medical care for children worldwide. Pediatric urological conditions our doctors treat include:

  • Hypospadias and Chordee – we perform the delicate reconstructive surgery for these malformations
  • Circumcision Issues – we perform circumcisions in the office and in the operating room as needed; we treat post-circumcision problems
  • Urinary Tract Obstructions – we perform both open and laparoscopic reconstructive surgery to relieve blockages in the urinary tract
  • Vesicoureteral Reflux – we treat reflux both medically and when necessary surgically using Deflux injections and open reimplantation surgery
  • Undescended Testicles – we perform the surgery to reposition testicles in the proper location
  • Hydrocele and Hernia Problems – we surgically repair this common condition in infants and children
  • Urinary Tract Infection – we evaluate children for this problem with the most up-to-date techniques
  • Fetal Urological Problems – we provide prenatal counseling to expectant parents about urological conditions diagnosed in-utero
  • Kidney Stones – we treat all types of urinary tract stones using lithotripsy and laser surgery
  • Pediatric Urology Associates provides the Pediatric Enuresis Center of Arizona to treat the incontinence problems of the children of Arizona.

Pediatric Enuresis Center
The Pediatric Enuresis Center of Arizona is committed to providing state-of-the-art treatments for enuresis in children and teenagers. The Center is the first enuresis clinic in Arizona directed by pediatric urologists dedicated to treating the specialized enuresis problems of children. Conditions treated in our Enuresis Center include:

  • Bedwetting – we use the latest treatment regimens to treat this common problem
  • Neurogenic Bladder Problems – we have special expertise in managing the bladder dysfunction in children with spina bifida
  • Dysfunctional Elimination Syndrome – we use a multi-faceted approach to treat this difficult problem
  • Daytime Enuresis
  • Urgency-Frequency Syndrome

The Pediatric Enuresis Center of Arizona uses the most up-to-date diagnostic tools to determine the cause of a child’s problem. Our diagnostic testing which is performed in the office includes urodynamic testing of the bladder, specialized uroflowmetry and ultrasound imaging of the urinary tract. We use state-of-the-art treatment regimens utilizing behavioral and pharmacological treatments. We often use biofeedback training techniques to treat the hyperactive bladder without medication.

Pediatric Urology Associates has multiple offices throughout Maricopa County. Our offices, located in Phoenix, Mesa, Glendale and Scottsdale, allow for convenient scheduling of appointments with our medical care providers. Our goal at Pediatric Urology Associates is to provide the highest quality pediatric urological care to our patients in an environment that feels secure and is comforting to the children and their families.

Arizona Office Locations: Phoenix, Scottsdale, Mesa,
and Glendale


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