Zynex, Inc. announced the hiring of Steve Siefring as Director of Business Development. Mr. Seifring will be responsible for driving sales activities in the electrotherapy and compound pharmacy business, reporting to Robert Bird, Vice President of Sales in the US. Mr. Siefring has over 20 years of healthcare related sales and business development experience, specifically in the electrotherapy market space, with approximately 12 years at Empi, Inc. Mr. Siefring also previously held executive sales positions with MicroAire Surgical Instruments, O'Connell & Associates (orthopedic products) and Genzyme Surgical.