A nurse in Pennsylvania admitted last week that he filmed several female patients including a teenager while they undressed.
He has pled guilty to 48 criminal counts, 36 of which are invasion of privacy charges.
James Close, 45, is to undergo a sex-offender evaluation and will then be sentenced.
Close worked at a dermatology clinic and is said to be "remorseful" for his actions. He was caught when a 17-year-old female noticed that he was recording her on his phone during a procedure.
Once that discovery was made investigators found 18 additional videos on his phone with women ranging in ages from 20 to 70 and all videos were taken without knowledge or permission from the women.
Close will be required to register as a sex offender and the registration will stay with him for at least 15 years. If the evaluation reveals that he is a sexually violent predator then he will be required to register for life.
He had no former criminal history.