MHSSO's parent organization was formed in 1950 and incorporated in 1954 as the Carter County Child Guidance Clinic, a citizen's owned, non-profit, non-governmental corporation. In 1974, following a grant from the National Institute of Alcoholism and Alcohol Abuse, operations were expanded and the Carter County Guidance Clinic began serving a five county area.
In 1977, after securing a grant from the National Institute of Mental Health, Mental Health Services of Southern Oklahoma became the operational arm of the Guidance Clinic of Southern Oklahoma, a comprehensive mental health center serving a nine county area.
Today, in addition to an administrative office, Mental Health Services of Southern Oklahoma has six community mental health clinics. Through these clinics a full range of mental health care is provided, including screening services, emergency (24 hour) services, outpatient, psycho-social rehabilitation, care after hospitalization for psychiatric conditions, enhanced residential care, child/adolescent services including a Systems of Care program in Carter, Love and Johnston counties, services for the elderly, and substance abuse treatment.
In 2008, MHSSO provided a leadership role in the implementing of tele-med services across rural southern Oklahoma. At present, we are one of the largest providers of tele-health services in Oklahoma.