CLEVELAND – With thousands of Elvis impersonators in the world, you can find just about any kind you want.

There’s El Vez, the Mexican Elvis, and Robert Washington, the black Elvis.

The rarest of Elvii, as they’re called, include a lesbian, a guy in a wheelchair and a blind man from Pakistan.

“I did meet a doctor once,” says Patty Carroll, who photographed hundreds of Elvis impersonators while working on her book “Living the Life: The World of Elvis Tribute Artists.”

“But never a brain surgeon.”

Leave that to Cleveland.

Northeast Ohio is home to Al “Alvis” Cohen, a full-time pediatric neurosurgeon at Rainbow Babies & Children’s Hospital and a part-time Elvis.

“The hospital, most times, is a very serious place,” says Dr. Avroy Fanaroff, chairman of Rainbow’s Department of Pediatrics, who hopped onto the stage to perform “Hound Dog,” with Alvis; Rainbow’s new president, Mike Farrell; and Alvis’ 190-pound Newfoundland, Morty.

“But this a children’s hospital,” Fanaroff said, “and children should have fun.”

And so they did.

They dressed in vinyl Elvis suits, tinted Elvis glasses, scruffy Elvis muttonchops and sang and danced on stage with Alvis while the audience of hundreds cheered and snapped pictures and sang with them.

With all the chairs full in the performance area, outside the Pediatric Neurological Surgery offices, some of the children plopped on the floor. Others came with IV poles, oxygen tanks or stitches in their heads. Employees and visitors stood three deep in some places along the balcony above them, just to catch a bit of the show put together by a guy who spends his days plucking tumors out of kids’ brains.

Alvis paid tribute to Rainbow’s nursing staff by calling 48-year Rainbow veteran Dalia Zemaityte on stage and serenading her with “Only You.”