About Us

Meet our friendly, experienced pediatricians and staff at West Valley Pediatrics! Our entire team is dedicated to helping you and your child feel at home from the moment you walk through the door. We're proud to be members of the West Valley Community and serve the needs of their children.

We pride ourselves in being an exceptional clinic where children come first. Our child-focused practice works hard to meet the needs of children from infancy through adolescence. Compassionate, knowledgeable and supportive staff is the cornerstone of West Valley Pediatrics' quality care. All of our pediatricians and medical staff are highly trained professionals and maintain the highest level of accreditation in pediatrics to address the special needs of infants, children, and teens.

We strive to treat each and every patient as we would want our own children to be treated. Our doctors and staff look forward to building a relationship with you and your family.

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!

Krysta Crawford DNP, CPNP-PC, CPN

Krysta was born in Phoenix, AZ and has remained an Arizona native here in the West Valley. She graduated with her Bachelor's of Nursing from Grand Canyon University and worked primarily in the pediatric and neonatal population in the ICU at Phoenix Children's Hospital. She received her Doctorate of Advanced Practice Nursing focusing on Pediatric Primary Care from Arizona State University and was an Arizona Health Education Center Scholar which provided her opportunities to train at multiple facilities in rural and underserved areas of Arizona. She likes to spend her free time reading, sewing, gardening or at the local hockey rinks with the Arizona Kachina's girls hockey program. She is very excited to continue to bring her passion for pediatric primary care to the West Valley.

Damara Vasquez, DNP, CPNP

Damara received her RN degree from Yavapai college in Northern Arizona in 2009 She received a Bachelors of Nursing at Grand Canyon University in 2011. Damara’s time as a bedside nurse was spent in Neonatal Intensive care and Pediatric Intensive care settings. Damara has worked at both Banner hospitals and Phoenix Children’s Hospital as a bedside nurse.

Damara attained her Doctorate of Nursing Practice (DNP) from Arizona State University in 2017 and has been working in the valley in Pediatric primary care since.

Damara is married and has two children. When she is not working you will find her hanging with her family. She loves trying new foods and restaurants, board games and travel.

Sonora Robison, DNP

Sonora was born and raised Arizona. She decided to pursue her education out of state to expand her experiences and attended The University of North Dakota where she received her Bachelor's of Science in Nursing degree with a minor is American Sign Language and Deaf Studies. She then moved back to Arizona to be close to her family. She worked in the valley as a Neonatal lntensive Care nurse and became a Developmental Specialist for premature infants. She attended The University of Arizona for graduate school where she received her Doctorate of Nursing Practice with a focus on Pediatric Primary Care. When she's not working, she enjoys spending time with her family and 2 dogs. They especially like to travel and spend time outdoors.

Kayleena Chentfant, FNP

Kayleena was born and raised in Phoenix, Arizona. She studied and received her advanced family practice nursing degree from Grand Canyon Univeristy. She has 10+ years of nursing experience and education working for the Mayo Clinic of Arizona and Phoenix Children's Hospital. Though she likes providing care for adults, she REALLY likes taking care of the kids in her community!

ln her spare time, she enjoys exploring with her 3 daughters, gardenrng, hiking and any trips to the beach!

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