They have called me numerous times over the past few weeks, sometimes using different phone numbers. Last week I Googled this phone number; the second link pops up and says Horizon Health. Then there are a few other links with comments from people that think this is a scam. Today they finally left a voicemail and said "This is Alicia with Horizon Health, I'm calling for [my full name] for a medical follow up" and requesting for me to call them back. My caller ID says they're located in Lewisville, Texas (I've never even been to Texas, let alone visited a doctor there). I think this is a scam and I'm not taking my chances at calling them back or answering any future calls.