Richard Simmons had visitors Friday night ... cops who were doing a welfare check because he's been MIA for more than year ... and guess what? He's fine.
Law enforcement sources tell TMZ ... 2 LAPD officers showed up to Simmons' Hollywood Hills home at 7 PM. Richard answered the door and showed them in. The cops' feedback -- he couldn't have been nicer and more gracious. They say he was articulate, lucid, relaxed and appreciative of their concern.