Management

Larry Stone

Founder

As the founder of Professional Ambulance, Larry has been the driving force and conscience of the company. Larry maintains his EMT certification as well as his EMD status, and regularly ...

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Bill Mergendahl, JD, EMT-P

CEO

Bill has been with Professional since 1987 and has served in his current position since 1990. He is responsible for all aspects of the daily operation and administration of the company. ...

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Jamie Pianka, BSBA, NRP

Chief Operating Officer

Jamie is the Chief Operating Officer for Pro EMS in Cambridge, Massachusetts. Pro EMS has been recognized regionally and nationally for their innovation, clinical sophistication and unique formula for its ...

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Keri Cook, NRP

Director of CQI

Keri has over 20 years of EMS experience. She originally began working at Pro as an EMT/Dispatcher in 1989 and has been a paramedic for over 15 years. She assumed ...

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Rachid Sbay, NRP

Director of Operations

Rachid has over 20 years of EMS experience and has been involved with Pro in various roles since 1993. Rachid originally began working as an EMT and he has been ...

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Laura Terry

Director of Administration

Laura has almost 20 years of administrative experience. She is responsible for Pro EMS’s human resource functions including benefits, payroll, certification tracking and accounting.

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James DiClemente, MBA, NRP

Director Center for MEDICS, Paramedic Program Director

As the Director of Center for MEDICS, James’ primary responsibility is to design and implement all training and education for Pro EMS employees and more than a dozen outside agencies ...

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Stacy Harren

Director of Communications

Stacy has worked in emergency communications since 2005, beginning her career at a large ambulance service in New Jersey. She began working at Pro as a dispatcher in January 2010 ...

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Gibson McCullagh, EMT-P

Director, Special Projects & Strategic Initiatives

Gibson began his EMS career in 2006 in Lander, Wyoming with WMI of NOLS.  During college, Gibson worked with a variety of agencies, including fire-based, private, volunteer, and collegiate.  Gibson ...

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Tim Harren

Director of IT

Tim began his EMS career in 1998 in New Jersey as a volunteer EMT Basic.  In 1999, he began working for a large hospital based EMS agency as an EMT ...

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Teresa Cruz

Director of Reimbursement

Teresa has been with Professional since 1990, and has served as Director of Reimbursement since 1993. Teresa is responsible for all aspects of the accounts receivable function at Pro EMS. She coordinates ...

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Joel Estes, EMT-P

Community Outreach

Joel has been an EMT for more than ten years. He started as a BLS provider in Los Angeles and has five years of ER tech experience in L.A. and ...

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Brian Kelley, EMT-P

Operations Supervisor

Brian has been with Professional since 1998. Serving in a leadership role since 2003, Brian assumed his current role in 2006. He is responsible for field operations and field training ...

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Nate Dubreuil, EMT-P

Operations Supervisor

Nate began working for Pro EMS in 2005 and has ten years of experience as a paramedic. He is a graduate of the Pro EMS Center for MEDICS program. In ...

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Christiane Saravia-Palomo, EMT-P

Operations Supervisor

Christiane began her EMS career at ProEMS as an EMT-basic in 2010. A year later, she joined the Center for MEDICS paramedic program, graduating in 2012. Christiane looks forward to furthering ...

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Dana Cokely

Field Training Officer

Born and raised in the city of Cambridge, Dana remains passionate about her commitment to help her community. Dana is a Paramedic with the organization and an Emergency Medical Dispatcher; ...

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Georgette Cummings

Field Training Officer

Georgette began her career in EMS in 1996 here at Pro EMS, after her graduation from the BHCC Paramedic Program, she became a Paramedic here in 2000. Not only has ...

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Cameron Mosgrove

Field Training Officer

Cam has been a paramedic at Pro EMS for the past 3 years, servicing both the city of Cambridge and the Emerson Hospital area.  A 2011 graduate of Pro EMS ...

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Robert Johnson

Field Training Officer

Rob began his career in EMS as a BLS provider at Pro EMS. He graduated with Class 3 from Center for MEDICS and currently provides coverage in the Cambridge and ...

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James Creedon, NRP

Field Training Officer

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