NY- A charity executive used $210,000 meant to cure heart disease to get his own pulse pounding – repeatedly flying a dominatrix halfway across the country to spank him, law-enforcement sources said yesterday.

Abraham Alexander racked up charges on an employer credit card for a slew of personal items, including steamy S&M meet-and-beat sessions with Lady Sage, a world-renowned whip mistress based in Columbus, Ohio, the sources said.

Alexander, 45, is an accounts-payable exec at the not-for-profit Cardiovascular Research Foundation.

The Long Island man allegedly used the funds to fulfill his fetish fantasies by paying the Midwestern mistress’ air fare to New York each month – and ponying up for a wardrobe full of bawdy bondage gear, including chains and whips.

He also paid for jewelry and fancy dinners, in addition to $30,000 in fees to the leather-clad Ohio backside paddler, sources familiar with the case said.

Alexander, who had not been working at the charity for long, was arraigned Tuesday on charges of grand larceny and forgery and ordered held in lieu of $10,000 bail, the Manhattan DA’s Office said.

Lady Sage – who goes by her real name, Pam DeBord, outside her dungeon – says on her Web site that she charges $1,000 a day plus expenses to travel to clients.

On top of that, clients pay $250 an hour for her spanking services.

“Professional domination sessions are about good people having great fun,” Lady Sage says on her Web site.

“I love nothing more than coaxing you to accept more pain and torment for my pleasure,” she adds. “I love holding your very soul in my hands.”

The raven-haired 43-year-old poses in leather bondage outfits on her site – but in real life, she is a divorced former hairdresser and a mom of one who recently became a grandmother, her ex-husband said.

“She flies from America to Europe all the time for work and even the Middle East, places like Egypt,” claimed the Ohio man, who did not give his name and who said he divorced her after learning that she worked as an S&M mistress behind his back.

Of the more than $200,000 Alexander allegedly stole, $30,000 was spent for Lady Sage’s services, the sources said.

The NYPD’s Organized Theft and Identity Theft Task Force busted him on Monday at his East Meadow home. He was still being held in jail yesterday.

Neither he nor his lawyer could be reached for comment.

At his home last night, a man who identified himself as Alexander’s brother-in-law said, “Unfortunately, my sister married him . . . He’s an a- – – – – -.”

Officials at the Cardiovascular Research Foundation released a statement saying that they uncovered the alleged theft during a regularly scheduled review of finances.

The East 59th Street-based organization, described as the world’s largest private medical research foundation, said thefts will be covered by insurance.

Sage refused to talk when reached at home in Columbus.

On a section of her site dedicated to customer testimonials, one happy client raves, “I spent most of the session tied down on her table while she abused me in various ways. She also spent more than a little time reddening my ass, because I could be marked for a few days.”

It was not known if any of the letters from satisfied customers was from Alexander.