Robert Hadden was one of New York’s most prominent obstetrician-gynecologists, treating women and delivering babies under the auspices of two of the city’s most prestigious institutions: Columbia University and New York-Presbyterian Hospital. However, behind Hadden’s stature, he had a secret. For more than two decades, Hadden sexually abused many of his patients, authorities say. He abused around 1,000 women, and perhaps more. He told his victims, who included pregnant women and teenage...