The alleged crimes occurred at a Park Avenue medical office in 2003 and 2004.
Manhattan District Attorney Robert Morgenthau says the victims - all Orthodox Jewish women in their late 20s - were told they would get paid about $100 to participate in an insurance survey or examination.
Earlier this month, Silber, a resident of Monsey, N.Y., was accused of "aiding and abetting" in a similar scheme in Rockland County. His lawyer did not immediately return a call for comment.
Silber created the New York Skyride at the Empire State Building, which simulates a bird's-eye tour of New York City. He reportedly sold it for $9 million.
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