The Emergency Medical Services Authority (EMSA) is Oklahoma’s largest provider of pre-hospital emergency medical care. EMSA was established as a not-for-profit public trust authority in Tulsa in 1977. In 1990, Oklahoma City joined the EMSA system creating what is now known as EMSA’s Western (Oklahoma City area) and Eastern (Tulsa area) Divisions.

EMSA has long been recognized as a national EMS industry leader. We are known for highest quality in clinical care, exceptional operational efficiency, and fiscal integrity.