Our Team

With over 100 years of combined experience, we strive to set the Gold Standard in patient safety. Our team is located in the Northeast, but we provide our services to facilities all across the country and abroad.


Jonathan WillardJonathan C. Willard, President & Co-Owner

Our team is led by Jonathan, who has worked in the medical gas and healthcare construction industry for 20 years. Prior to founding AMG, he owned Certified Medical Gas Services and worked on some of the most significant and complex healthcare projects in the northeast. Jonathan holds numerous certifications and is one of only a handful of individuals that has earned all of the ASSE 6000 certifications.

His credentials include:

  • A Principal Member of The Technical Committee on Medical Gas and Vacuum Piping Systems (NFPA 99: Health Care Facilities Code)
  • A Principal Member of The Technical Committee on Industrial and Medical Gases (NFPA 55: Compressed Gases and Cryogenic Fluids Code)
  • National Inspection, Testing, and Certification Corporation (NITC) – ASSE 6050 Certified Instructor.
  • ASSE 6010, 6015, 6020, 6030, 6035, 6040, and 6055 Certified
  • Medical Gas Professional Healthcare Organization (MGPHO) – Credentialed Medical Gas Verifier (CMGV-0135)
  • MGPHO – Member of the Board of Directors and Vice President of Legal Affairs
  • LokRing Certified Installer
  • Certified in Plumbing Design (CPD)
  • LEED Accredited Professional (LEED AP)
  • Certified Project Management Professional (PMP)
  • Certified Healthcare Constructor (CHC)
  • Comfort Systems USA Leadership Development Certificate
  • Master of Science degree in Business Education
  • Master of Science degree in Community Economic Development

Doug OstraatDoug Ostraat, Vice President & Co-Owner

Doug Ostraat has worked in the medical gas industry since 1970, first as a Respiratory Therapist and then as a supervisor, responsible for the maintenance and testing of a facility’s medical gas and vacuum systems and related secondary equipment. He left the organization to become a sales and service representative for a large medical gas and respiratory care equipment distributor. In 1978, he started his own company, Green Mountain Medical Gas Services (GMMGS), which he has operated as an independent distributor of medical gases, respiratory therapy and life support equipment. For the past 35 years, GMMGS has been providing medical gas system service, testing and training. He holds the following Medical Gas Certifications:

  • ASSE 6050 and 6055 Certified Instructor
  • ASSE 6010 Medical Gas Systems Installer
  • ASSE 6030 Medical Gas Systems Verifier
  • ASSE 6035 Bulk Medical Gas Systems Verifier
  • ASSE 6050 Medical Gas Systems Instructor
  • LokRing Certified Installer

Eric SlasonEric Slason, Operations Manager / Medical Gas Verifier

Eric has worked in the medical gas and healthcare construction industry for about 8 years. He holds a Bachelor of Science Degree in Occupational Safety in addition to the following medical gas credentials:

  • ASSE 6010 Medical Gas Systems Installer
  • ASSE 6020 Medical Gas Systems Inspector Certified
  • ASSE 6030 Medical Gas Systems Verifier
  • ASSE 6035 Bulk Medical Gas Systems Verifier
  • ASSE 6040 Medical Gas Systems Maintenance Personnel
  • ASME IX Brazing Certified
  • LokRing Certified Installer

Mark Filip, Medical Gas Service Technician / Verifier

Mark has the following medical gas credentials:

  • ASSE 6010 Medical Gas Systems Installer
  • ASSE 6020 Medical Gas Systems Inspector
  • ASSE 6030 Medical Gas Systems Verifier
  • ASSE 6035 Bulk Medical Gas Systems Verifier
  • ASSE 6040 Medical Gas Systems Maintenance Personnel Certified
  • ASME IX Brazing Certified
  • LokRing Certified Installer

Damion Burleigh, Medical Gas Service Technician/Verifier

Damion has the following medical gas credentials:

  • ASSE 6010 Medical Gas Systems Installer
  • ASSE 6020 Medical Gas Systems Inspector
  • ASSE 6030 Medical Gas SystemsVerifier
  • ASSE 6040 Medical Gas Systems Maintenance Personnel Certified
  • AMSE IX Brazing Certified
  • LokRing Certified Installer

Jeremy Koontz, Medical Gas Service Technician

Jeremy has the following medical gas credentials:

  • ASSE 6010 Medical Gas Systems Installer
  • ASSE 6020 Medical Gas Systems Inspector
  • ASSE 6030 Medical Gas Systems Verifier
  • ASSE 6035 Bulk Medical Gas Systems Verifier
  • ASSE 6040 Medical Gas Systems Maintenance Personnel Certified
  • ASME IX Brazing Certified
  • LokRing Certified Installer

Lissa Winrow, Office Operations Manager

Deb has years of experience in office operations, human resources, and business administration.


Brianna Parr, Billing Specialist

Bree has years of experience in bookkeeping, accounts payable, accounts receivable, and payroll.

470 Mast Road, Suite B | Goffstown, NH 03045