December 20, 2025 - The Merced County Department of Public Health, in coordination with its public safety partners, will soon transition Emergency Medical Services (EMS) operations from Sierra Emergency Medical Services Alliance-Riggs (SEMSA) to American Medical Response (AMR), effective December 31, 2025, at 12:00 p.m. (noon).
This transition has been coordinated among all agencies to ensure no disruption in emergency medical response or patient care. Community members can be assured that 911 calls for medical emergencies will continue to be answered promptly, with the same high level of professionalism and dedication they expect.
What Residents Need to Know:
- Continuity of Service: Emergency medical response will remain uninterrupted throughout the transition.
- Community Assurance: Residents and visitors will continue to receive timely, reliable EMS coverage across Merced County.
“Our foremost responsibility is the safety and well-being of our residents,” said Chairman Josh Pedrozo of the Merced County Board of Supervisors. “This carefully planned transition ensures uninterrupted emergency medical services, and residents can be confident that help will be there when they need it most.”
“This effort reflects the strength of our partnerships across Merced County,” said Merced County Executive Officer Mark J. Hendrickson. “The collaboration among public health, our new ambulance company and our public safety professionals, allows us to move forward with confidence.”
“We are excited to welcome AMR as our new EMS provider,” said Kristynn Sullivan, Merced County Public Health Director. “Ensuring timely, dependable emergency medical services is our top priority, and we are confident AMR will deliver excellent care to the people of Merced County.”
For more information, please visit Ambulance Contract Compliance.
Source: Merced County
