Leadership Team

John Chemaly

Co-Owner & President

Email: jchemaly@trinityems.com


978-441-9191 ext 321

As President and Co-founder of Trinity E.M.S., John is actively involved in day-to-day operations and community enrichment. With a strong commitment for community service, John leads by example, serving on numerous Boards and Committees throughout the Greater Merrimack Valley, including the Massachusetts Ambulance Association, Merrimack Valley Hospice House, YMCA of Greater Lowell, Big Brother and Big Sister of Haverhill, Alzheimer’s Association, Yankee Clipper Council, March of Dimes Walk, Kidsfest in Haverhill, Lowell Transitional Living Center and Merrimack Valley Food Bank. Born and raised in Tewksbury, John is a graduate of Holy Cross.

Gary Sepe

Co-Owner & Executive Vice President

Email: gsepe@trinityems.com


978-441-9191 ext 311

With over 30 years in the EMS industry, Gary founded Trinity with John in 1991. Starting with one ambulance, they have worked to grow Trinity to over 250 employees across a 70 vehicle fleet. The two continue to work hand in hand, delivering exceptional care throughout the Merrimack Valley.

With an extensive background in emergency care and training, Gary has a strong clinical understanding that drives his leadership approach. In 1977 he was the youngest CPR instructor for the Lowell chapter of the American Red Cross, where he currently serves on the Board of Directors.

Chris Dick

Director of Business Development & Marketing

Email: chrisdick@trinityems.com


978-441-9191 ext 332

Chris first joined Trinity in 1991 as a wheel chair van driver. After moving on to a successful career in the financial industry, Chris returned to Trinity in 2007 as Director of Business Development and Marketing. With deep roots in Greater Lowell, Chris is a founding Executive Board Member of the Young Professionals of Greater Lowell and serves on the Board of Directors for the YMCA of Greater Lowell and Greater Lowell Workforce Investment Board. Chris is a graduate of Tewksbury High School and received his Bachelor’s Degree in Business/Hospitality Management from Johnson and Wales University in Rhode Island.

Kirk Brigham

Director of Clinical Services and Education

Email: kbrigham@trinityems.com


Kirk Brigham has over 20 years of experience working in EMS, the last 10 as an EMS educator. He was hired in 2008, promoted to Director of Clinical Services in mid-2014.  He is the Training Center Coordinator overseeing 100 CPR instructors and ensuring course quality. Currently, Kirk is working towards obtaining his  Massachusetts Instructor Coordinator certification.

Robin Shone

Director of Account Receivable & Governmental Affairs

Email: rshone@trinityems.com


978-441-9191 ext 320

With more than 21 years of medical billing experience, 15 at Trinity, Robin specializes in medical terminology and coding. Robin is also a Member of the Medical Administrative Activities Billing and Healthcare Committee.

Jon Kelley

Director of Operations & Communications

Email: jkelley@trinityems.com



Jon started in the EMS industry earning his EMT patch in 1994. Over the next two years he worked in EMS and joined the Trinity family in 1997 as a full-time dispatcher. Although he truly enjoyed dispatching, he found himself on the ambulance working as an EMT. Jon’s knowledge of EMS and technology grew throughout the years and in 2013 was promoted to Dispatch Manager for Trinity. His leadership in dispatch shined and his innovative thinking awarded him another promotion in 2015 as Director of Communications and IT.

Jon has represented Trinity at a Town, State and Country-wide level as an expert in EMS technology and systems. Jon has been a topic presenter at various industry events. In 1998 he was named the NorthEast EMS Region 3 EMS Dispatcher of the Year. Jon served as a Military Policeman with the Massachusetts Army National Guard from 1990 to 1996. He also holds a degree from UMass Lowell in Criminal Justice.

In September 2018, Jon presented overseas in China  at their Ambulance Forum where leaders from across China and the World gathered to discuss emergency care.

Mary Constantine

Director of Human Resources

Email: mconstantine@trinityems.com


978-441-9191 ext 346

Mary has more than 15 years of Human Resources experience with eight at Trinity E.M.S. She is Human Resource Certified and holds an Associate’s Degree in Business Management.

Drew Morrow

Fleet Director

Email: dmorrow@trinityems.com


978-441-9191 ext.336

Drew is the Fleet Director for Trinity EMS.  Drew has over 25 years of light and heavy duty fleet experience and holds certifications as an ASE Master Auto & Diesel mechanic, an Emergency Vehicle Technician Master Ambulance, and a Ferno CotCare Technician.  Drew is a graduate of Universal Technical Institute (UTI) and is the Co-Chair of the Massachusetts Ambulance Associations Fleet Maintenance Committee.  Drew is a regular speaker at both federal and state industry conferences and consults frequently with many of the ambulance manufacturers to improve new ambulance design.

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