M.C. Townsend Associates, LLC

"Mary has a wonderful and unique interaction with students. Her subject knowledge is huge. Her energy level keeps students involved and alert. She can communicate with MD's, PhD's, Nurses, Techs, and Aides equally. I believe she does not send students from her course that cannot perform, teach, and collect high quality spirometry." - NIOSH Audit, June 7-9, 2010