Scammer; n ext thing you know, they'll be threatening you with the cops coming to your work, unless you pay them money. It's an extortion scam, and you can get info on this site (same scam, multiple numbers) as well as the FBI website under scams and safety. Don't call them back, and if you do pick up a call from them, hang up on them. Don't waste your time.
I too have a call from this number saying that my husband DR. Lic. And SS. number were being comprised and they needed to have him call them back right away they called themselves M. Callahan and Associates don't know who these people are but I wish they would stop calling.