Both victims claim they were assaulted during visits to Mount Sinai Hospital's emergency room

A prominent New York City emergency room doctor is facing multiple criminal charges after allegedly sexually assaulting two patients, PEOPLE confirms.

Dr. David Newman, a 45-year-old physician and book author who has given TED Talks and blogged for The New York Times and Huffington Post, faces charges of sexual abuse, assault, and using a controlled substance to facilitate a sex offense.

According to a statement from the New York City Police Department, a 29-year-old woman said Newman groped her when she went to Mount Sinai Hospital in Manhattan last week for shoulder pain.

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A police source confirms to PEOPLE the victim allegedly told detectives she was given strong pain medications, after which Newman touched her breasts and ejaculated on her skin.

Police say a second victim also claimed Newman touched her inappropriately during her emergency room visit this past September.

Newman is being held on $150,000 bond and information about his attorney was unavailable Wednesday.

Newman’s Huffington Post biography claims his book, Hippocrates’ Shadow: Secrets From the House of Medicine, “explores the underbelly of modern medicine and the fraying of the patient-doctor bond, using patient narrative and examples of misconstrued research.”