Investigators went to the assisted living facility in the 12700 block of West Alameda Parkway last week after the family of the victim indicated they had video of the caregiver having sex with the woman.
Police say the family installed a hidden camera in the victim's room in late December. Investigators say the family became suspicious that the woman was being mistreated.
Police arrested 41-year-old Gabriel Paul Cabral. He's been charged with crimes against an at risk adult.
Police say Cabral has worked at more than one assisted living facility in the area.
Cabral has been booked into the Jefferson County Jail.
Lakewood detectives would like anyone who feels they may have information on Cabral to contact them at 303 987-7111.
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