Federal prosecutors have filed a lawsuit against an Islip Terrace doctor, seeking to prohibit him from illegally prescribing controlled substances.

The suit said that between January 2011 and June 2013, Dr. Lawrence Womack wrote 241 prescriptions to patients for controlled substances, including oxycodone, methadone and fentanyl "in the absence of any legitimate medical need."

Womack, 48, wrote the prescriptions although he had given the patients toxicology screens that showed many "tested positive for illicit substances, including cocaine and heroin," according to the suit filed Thursday in federal court in Central Islip by U.S. Attorney Loretta Lynch's office.

Many of Womack's patients also tested positive for narcotics, such as methadone, hydrocodone and morphine, even though the doctor had not prescribed the drugs for them, the suit said.

The suit also said that Womack "conducted periodic breast examinations of some patients in exchange for continued prescriptions and/or increased amounts of opioids, including oxycodone and fentanyl."

The suit seeks to have Womack stop this alleged prescription practice and pay a fine of up to $25,000.

The head of the New York office of the federal Drug Enforcement Administration, James Hunt, said in a statement that by "ignoring the warning signs, Dr. Womack's alleged actions supported the ultimate distribution of diverted oxycodone throughout Long Island communities."

A spokeswoman for the Eastern District, Zugiel Soto, declined to say why a lawsuit was filed against Womack, but no criminal action was taken.

Womack could not be reached for comment.

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