Caller ID says "Health Alliance". The only people reaching the number they called are work associates, legitimate wrong numbers, or scammers. Since someone else reported this it seems Health Alliance is cold calling, which means they are a scammer.
You can contact 855-371-4640 to report a concern about this number it says Health Alliance but it's not an actual Insurance Company. or better yet contact the Federal Trade Commission and consumer affairs will take care of it..