psychiatry and addiction treatment services
Call Us Today: 678-442-5858

About us

SummitRidge Hospital provides mental health and substance abuse treatment and is located in Lawrenceville, GA, approximately 30 miles northeast of downtown Atlanta. Our inpatient, partial hospitalization and outpatient programs have helped teens, adults, older adults and their families.

Medical Team

Physicians on staff at SummitRidge Hospital include:

  • Kambiz Aflatoon, MD
  • Hemachandra Gunawardhana, MD
  • Mehmood Mehdi, MD, Medical Director
  • Gary McMorris, MD
  • Myrna Thompson, MD
  • Jae Pak, MD
  • Jyothi Mattam, MD


As a proud supporter of the National Action Alliance on Suicide Prevention, SummitRidge Hospital provides education and resources to the communities we serve. Watch our video below to learn more:


Contact us by Phone or Email
call 678-442-5800 or you can also send a request online