Area Code 766

Received a missed call from this # at 0845. Caller did not leave a message so I called back and got a voice mail asking for personal info such as SSN and home address.

United Health Care for Care Improvement Plus with reminder call of free annual preventative screening. I did a quick hang up. I did call back after reviewing comments. 888-366-8998 listed as invalid entry or call could not be made, or busy signal. I think