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Meet our team at Canyon Pediatrics!

J. Robert Kosiorek, M.D., F.A.A.P                                                                                                                               

Medical School:                Medical Academy of Wroclaw: Wroclaw, Poland

Internship/Residency:      St Joseph’s Hospital & Medical Center: Phoenix Arizona

Dr. Kosiorek is Board Certified in Pediatrics and is a Fellow of The American Academy of Pediatrics. He received his undergraduate degree from Villanova University. He has been exclusively practicing at Canyon Pediatrics for the past 28 years. Away from the office, Dr. Kosiorek enjoys the beaches and surfing in Hawaii and the diving in the Caribbean. He is always accepting new patients from newborns to adolescents. Dr. Kiosiorek is a currently the Medical Director of Canyon Pediatrics.


Howard Glenn Garner, MD


Medical Training:          University of Virginia

Dcotor Garner is a pediatrician with over 20 years of experience in the East Valley.  He has been married for over 20 year and has three beautiful children ages 10, 8, and 6. Dr. Garner completed his medical degree at the University of Virginia and completed post-doc training in both pediatrics and family practice. 


Tim Nguyen, MD


Medical Training:          


Rebecca Alvarez, M.S., PA   

Physician Assistant

Physician Assistant, NCCPA Certified, Master of Science

Medical Training:            Arizona School of Health Sciences, Mesa, Arizona

Rebecca Alvarez is very passionate about children's health. She likes helping patients feel better and enjoys watching them grow and flourish.  Rebecca is fluent in Spanish.                                             



At Canyon Pediatrics, we consider it both a great joy and responsibility to care for children. Most of us are parents ourselves, so we strive to be understanding and available to the families we are privileged to serve. We are honored that you have chosen us as your child's primary medical provider and are confident that you will be pleased with the quality of care and service that we can provide you and your family.

A vital part of our service to children begins with our outstanding staff who works hard to manage and maintain a professional, caring and supportive environment for our patients in a timely manner. Our doctors are lifelong learners. Not only have they received advanced medical training in pediatrics, they continually pursue ongoing education to stay abreast of the latest in child health care.

Your child's health is as important to us as it is to you. We look forward to providing you with excellent medical care your child deserves.

View map and directions to our location and office hours.

Canyon Pediatrics

Gilbert Office
2451 E Baseline Rd, 200
Gilbert, AZ  85234

Mesa Office
815 E. University Dr.
Mesa, AZ 85203

(480) 507-2199

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