About Oxygen Concentrator Store
Gordon Wesener has been in the oxygen business for more than 20 years. He started his career servicing home concentrators with his stepfather and helping him provide oxygen services to retirement homes in the Denver area.
As the need for repair services grew, Gordon and his wife, Brenda, formed American Medical Sales and Repair (AMSR). Initially they focused on repairs, then slowly began building their sales operation.
In late 2009, Crescendo Capital Partners partnered with Gordon and Brenda to grow and develop AMSR into a world-class provider of home respiratory equipment. AMSR is now one of the largest web-based providers of oxygen concentrators.
Jenny Hopkins CEO and Partner
Jenny is a managing partner in Crescendo Capital Partners. Her background includes more than 20 years' experience leading organizations for Hewlett Packard and Agilent Technologies.
Gordon Wesener COO (Chief Oxygen Officer) and Partner
AMSR's founder, Gordon has more than 20 years' experience in the oxygen and respiratory industry.
John More Customer Service Manager
John has been helping customers in various professions for more than 20 years. He has been with AMSR since 2008. He has been factory-trained by Respironics, DeVilbis, Inogen, Invacare,and SeQual. He is also a certified technician for select Respironics and SeQual products.
Jessica White Director of Operations
Jessica has been with AMSR since 2010.
Shannon Walter Accountant
Shannon joined AMSR in February of 2012. Originally from North Carolina she moved to Denver after college and began her first Accounting job with Marriott Hotels. Shannon loves the fast pace of a smaller business and the opportunity to always be improving.
Scott Ridl Web Manager
Scott joined AMSR in 2008 and has 8 years experience as a web manager.
Marissa Ganje Office Manager
Marissa recently graduated from University of Colorado at Colorado Springs. She oversees inventory and transactions. She proclaims to be the "World's Biggest Justin Bieber Fan!"
Nick Vannatta: Lead Sales Technician
Nick joined AMSR in 2007. He has been factory-trained by Respironics, DeVilbiss, Inogen, Invacare, and SeQual. He is also certified to repair select Respironics and SeQual products. Nick enjoys getting to know his customers, and they often ask for him by name.
Linda Ganje Sales Technician
Linda joined AMSR in 2008. She enjoys educating her patients and assisting them in selecting the products that would best fit their needs.
Diana Loera: Respiratory Therapist and Sales Technician
Diana has been factory trained by Sequal, Respironics, and Invacare. She enjoys interacting with customers, demonstrating products and helping them choose the product that they will be most satisfied with.
Zach Palmer: Sales Technician
Zach joined AMSR in 2012. He has been factory-trained by Inogen and SeQual. Zach has been in various customer service positions for more than eight years and loves the challenge of finding the best solution for customers.
Bret Bennett: Sales Technician
Bret joined AMSR in 2012 and is factory trained by Sequal, Respironics, and Invacare. He says he has never had a more fulfilling job and loves to connect with people over the phone. Helping customers finding the best solution for them is his number one priority.