Welcome to West Valley Pediatrics, your experienced and caring pediatricians in the West Valley. We have recently opened a new office in Buckeye, Arizona and are currently scheduling patients. If you're looking for accessible pediatric care, a child–friendly environment, and a responsive team of pediatricians in Avondale and Buckeye, then look no further. We love kids, and our goal is to have a positive impact in the lives of children by providing exceptional health care and compassionate service to the families we serve.

At West Valley Pediatrics, we offer a full range of pediatric care including prenatal visits for expecting parents, well–child check–ups, immunizations and sick appointments. Our caring team is committed to providing quality service in a comfortable, safe office setting where children and parents can feel at ease. We also set aside time to equip parents with the tools and resources necessary for the development of healthy children from birth to adolescence.

We invite you to take a few moments to browse our website and familiarize yourself with our practice. We hope that it will serve as a valuable resource for you. You'll find all of the helpful information you need about our practice including doctor bios, service details, directions to our office and new patient forms.

West Valley Pediatrics looks forward to walking alongside you as you guide your child along a path of optimal health and wellness. We can assure you that you'll feel confident in our ability to not only meet, but exceed all of your expectations. For questions or to schedule a visit, contact our office today!

Our Location

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Hours of Operation

Our Regular Schedule


8:00 am-5:00 pm


8:00 am-5:00 pm


8:00 am-5:00 pm


8:00 am-5:00 pm


8:00 am-5:00 pm





Meet Our Staff

  • Gary Berebitsky, MD

    Dr Berebitsky grew up in Indiana and graduated from Indiana University with his medical degree. He is a Board Certified Pediatrician and is a Fellow of the American Academy of Pediatrics. His hobbies include sprint triathlons, swimming and traveling. Dr Berebitsky enjoys practicing General Pediatrics.

  • Colleen Cunningham, MD

    Dr. Cunningham grew up in Texas and attended Texas A& M University where she graduated as a member of the Fightin Texas Aggie Class of 1999.  She selected UT Houston for Medical School and moved to Phoenix to do her pediatric residency at Phoenix Childrens' Hospital.  She had intended to return to Texas after residency, but liked Arizona so much she decided to stay.  She has worked at West Valley Pediatrics since graduating from residency.  She and her husband like to hike, kayak and travel. You might even see their family at a Diamondbacks or Coyotes game.

  • Alan W. Hartsook, MD

    Alan was born in Phoenix, Arizona growing up most of his life here in the Valley of the Sun.  He graduated Summa Cum Laude with his Bachelors of Science in Exercise Physiology from Northern Arizona University, and then completed his Medical Degree at the University of Arizona College of Medicine.  Afterwards, he stayed in the Valley to complete his residency training from Phoenix Children's Hospital/ Maricopa Medical Center Pediatric Residency Program.

    Alan's interests include patient advocacy serving as a Board Member of the Arizona Chapter for the American Academy of Pediatrics.  He is also interested in medical education, lecturing for the Midwestern University Physician Assistant Program.

    Alan is married to his high school sweetheart and has 2 daughters.

  • Ekta Bajaj, MD

    Dr Bajaj was born in Gilbert, AZ and is an Arizonan native through and through. She graduated from Drexel University with a Bachelor's of Science in Biological Sciences and continued her education at Drexel University College of Medicine. She moved back to the Valley for residency at Phoenix Children's Hospital/Maricopa Medical Center. 

    In her free time, Dr Bajaj enjoys traveling, enjoying the gorgeous Phoenix weather, and trying new and exotic types of foods. She is excited to serve the West Valley community!

  • Heather Jacobs, RN, MPH, MSN, CPNP

    Heather grew up near Los Angeles, California and attended the University of California at Berkeley for her undergrad and graduate studies in Public Health and research.  After missing the face to face time with children and families, Heather moved to Connecticut for the pediatric nurse practitioner program at Yale University.  Heather chose to move back west for the warm weather and to be close to family in Flagstaff.  Heather enjoys traveling, hiking, swimming, and baking in her spare time.  Her main interests in Pediatrics are Allergy and Asthma, Adolescent Health, and Childhood Obesity.


  • "Coming Soon"