About us

Dr. Clark Cantrell Jr.
Dr. Cantrell was trained in pediatrics at the William Beaumont Hospital in Royal Oak, Michigan, which is an affiliate of the University of Michigan. He was first taught behavioral pediatrics at the Beaumont Neuroeducation Canter. After graduation in 1986, he did an externship in developmental/behavioral pediatrics at the University of South Florida in Tampa, Florida. After completion, he joined a private pediatric practice, Cobb Pediatrics, in Austell, Georgia, and began practicing pediatrics as well as behavioral pediatrics.
For 25 years, he directed the Cobb Neuroeducation Center. 10 years ago, he founded Summit Center for Adolescent, Neuroeducation and Behavioral Medicine. He is currently still practicing pediatrics and behavioral pediatrics at the Summit Center in Marietta, Georgia.
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Dr. Cantrell’s biography
  • Dr. Cantrell trained at William Beaumont Hospital, Royal Oak Michigan, which is an affiliate of the University of Michigan.
  • During his residency training he studied at the William Beaumont Neuroeducation Center from 1983 – 1986. At the time this center was one of the few training centers in this field.
  • In 1986 he studied Behavioral Pediatrics at the University of South Florida Neuro-Behavioral Department.
  • Following graduation from pediatric residency Dr. Cantrell located to Austell GA where he has been practicing for more than 25 years.
  • Within his over 25 years of full-time pediatric practice he continues to practice in the Neuroeducational Behavioral field.
  • Dr. Cantrell has served on the speaker bureau for (3) pharmaceutical companies lecturing widely in the Southeastern United States.
  • Dr. Cantrell routinely lectures for the Cobb County School System on ADHD and related behavioral problems.
  • Dr. Cantrell was founder and director of Cobb Pediatric Neuroeducational Center in 1996. He continues today to practice behavioral medicine at the Summit Center treating children and young adults with school, behavioral, attentional, and other related problems.
Meet the staff
Laurie Bivins
I am honored to be entrusted with the opportunity to care for your family and children. I received my undergraduate degree from the University of Oklahoma and my master’s degree from the University of Texas Medical Branch in Galveston. I am nationally certified as a pediatric nurse practitioner and lactation consultant. I have been in pediatric medicine as a practitioner for over 30 years in various fields of care.

I enjoy working with infants, children, and adolescents. I have many years of experience with newborn care, premature follow up, along with many medical conditions of childhood. Sharing in the growth and development of children throughout childhood has been a focus and enjoyment of my practice in pediatric medicine.
In my spare time I enjoy outdoor activities such as hiking and fly fishing with my husband and two older sons. Gardening and needlework are also passions I enjoy and engage in frequently.

I look forward to partnering with you and your children in their care as we empower them to attain their maximum potential in health and wellbeing.
Robin Hunt
I earned my Bachelors of Science in Nursing from the University of Tennessee, and a Master’s of Science in Nursing with a specialty in Pediatrics from Emory University way back in the 1900’s. I have been working in general pediatrics for over 20 years now. I love every aspect of my career, from caring for my pediatric patients to building long-standing relationships with the kids as well as their families!

I have lived in Marietta for over 15 years and have 2 daughters, one in college & the other wrapping up her high school career. I have also been lucky enough to gain 3 bonus “kids,” actually all in college too, last summer when I married my handsome husband. When not working my dream job at Summit, I can be found looking for adventure hiking, camping, or just hanging out with family & friends.
Octavia Bell
Office Supervisor
Hali Briggs
Billing Supervisor
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