About Us

Trinity E.M.S., Inc. was started in Lowell, Massachusetts in 1991 by John Chemaly and Gary Sepe, two local professionals with over 70 years of combined EMS and healthcare experience.

Prior to founding Trinity, John and Gary had worked together as EMTs, developing a strong bond as friends and coworkers. When the company they were working for was on the verge of being sold, the two decided to go into business for themselves. Fueled by a desire to stay and work in the Merrimack Valley and a strong entrepreneurial spirit, the two founded Trinity E.M.S.

Since 1991, John and Gary have grown Trinity into an industry leader with over 300 employees, 80+ vehicles with multiple base locations throughout the Merrimack Valley and Southern New Hampshire. Each year Trinity responds to tens of thousands of calls for service.

Learn more about Trinity’s latest awards and community involvement.

Click here for a listing of Trinity’s base locations and contact information.


Promotional and Informative Videos from Trinity


LUCAS3 Chest Compression System The LUCAS® 3 chest compression system has improved features to facilitate maintenance and handling and allows for new insights through easy, wireless access to device data. This revolutionary chest compression system is designed to help improve outcomes of sudden cardiac arrest victims and improve operations for…

Notice of Privacy Practices

THIS NOTICE DESCRIBES HOW MEDICAL INFORMATION ABOUT YOU MAY BE USED AND DISCLOSED AND HOW YOU CAN GET ACCESS TO THIS INFORMATION. PLEASE REVIEW IT CAREFULLY. Our Responsibility to You Trinity EMS, Inc. (“Trinity”) is committed to respecting your privacy and confidentiality. Trinity is required by law to maintain the…


Latest News and Press Releases from Trinity EMS

Accredited Center of Excellence

Access to state-of-the art equipment and rapid, accurate communication are the most critical concerns of an emergency medical transportation provider. At Trinity, we believe in the power of technology and are heavily invested in the most advanced equipment and systems enabling us to provide the highest quality care for our…

Community Events

Trinity can also be on-hand at special events in the towns and cities we serve. Typically, we coordinate our activities with the local city or town officials, the police and fire department and emergency management personnel. Depending on your needs, we will provide the right type of emergency coverage to…

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