His routine earned him the nickname “the ride-share rapist.”

He would drive around to bars and nightclubs in downtown San Francisco and pull up to women who were waiting to be picked up, the authorities said. He would psose as their driver, they said, and had a sticker of a ride-share company on his car.

In 2013, the authorities said, he picked up a woman this way — then drove her to another location, where he raped her.

The same thing happened around Valentine’s Day this year. Again he picked a woman up, posing as her driver, took her to another location and assaulted her. Two similar cases followed, and by the time the authorities said he assaulted a fourth woman in June, they had already come up with the sobriquet for the rapist.

Now, five years after the first assault, the authorities have arrested and charged Orlando Vilchez Lazo, 37, of San Mateo County, Calif., in the four cases. He faces multiple counts of rape, kidnapping, sexual penetration by a foreign object and battery.