A drug counselor at a New York State rehab facility sold crack cocaine on “multiple occasions” to undercover agents, according to police who arrested the alleged dealer on felony narcotics charges.

Acting on tips from the public, investigators began probing Alvin Lewis, 54, and subsequently identified him as a “narcotic and dangerous drug dealer” operating in Dutchess County towns about 80 miles north of New York City.

On “multiple occasions,” Lewis sold crack to agents with the local prosecutor’s Drug Task Force, according to officials.

While conducting surveillance of Lewis, police determined that he worked overnight hours as a counselor at Arms Acres, an in-patient rehabilitation clinic.

Pictured above, Lewis was busted Tuesday evening while driving a few miles from his Wappingers Falls residence. Subsequent searches of his home and vehicles yielded “crack cocaine packaged and ready for sale,” investigators say.

Lewis, who is being held without bail, is expected to face additional charges.

An online search of credentialing records maintained by New York’s Office of Addiction Services and Supports returned no records under Lewis’s name.