Place an Order/Customer Support If you are currently a customer and would like to place an order or have questions about an order or billing, please call: Request Information To request information or to speak with a Tandem Medical sales professional, please call: Customer Support is staffed Monday through Friday, 8:00 a.m. to 5:00 p.m., Pacific Time. Media Contact Marc Lieberman Tandem Medical, Inc. (760) 943-0100, ext. 11 jdhaldeman@tanmed.com Feedback If you'd like to provide us feedback on this website, you may contact the webmaster at webmaster@tanmed.com.