About ATS

ATS Medical Services and Priority One provides logistic solutions encompassing the patient transportation process for large hospital systems. Using the most advanced technology and adaptive training, we enhance our services and continue to learn how we can efficiently improve the patient journey. Excellent care is our number one priority as we service areas within Illinois and Indiana.

ATS Medical Services is headquartered in Loves Park, Illinois, and provides the local healthcare and EMS communities with an extensive line of services benefiting patients and medical providers alike. Priority One is a brand created by ATS Ambulance to serve the Indiana community from regional headquarters in Indianapolis.

A Covalent Health Company

We go beyond ambulance transport to identify focus areas where our partnership can alleviate business stresses, saving our health systems time and money. Our world class standards of care, leading edge training and commitment to be a caring organization create an environment that empowers our employees to deliver exceptional care to our patients, their families, and our healthcare provider customers.

Today, ATS Ambulance operates alongside sister companies ProTransport-1 of Northern California, PRN Ambulance of Los Angeles and Century Ambulance Service of Florida under the Covalent Health banner.

Headquartered in Sonoma County, California, Covalent Health is a leading provider of medical transportation solutions in the U.S. We employ dynamic technologies and a customized  patient-centric approach, delivering improved patient outcomes and efficiency gains for some of the largest and most prestigious health systems in the U.S.



Priority One provides medical transportation and patient care to the state of Indiana from regional headquarters in Indianapolis. Founded by ATS Medical Services and built on the same dedication to customer service and high quality patient care, Priority One has established itself as a go-to ambulance provider as well as an essential part of the EMS and healthcare communities.

Utilizing highly trained EMS professionals and the latest mobile technology, Priority One ensures safety and efficiency throughout the transport process. Its custom products and services do more than simply benefit those inside a Priority One ambulance, they help the healthcare system work better.

Learn more about the mission, values and services shared by Priority One and ATS Medical Services by visiting the applicable portions of our website.

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