Bio
Daniel "Dan" Callahan, is a Licensed Social Worker and Certified Addiction Professional with a human service career spanning over thirty years. He attained his Masters of Social Work degree at Fordham University, Lincoln Center in New York City.
Daniel "Dan" Callahan, is a Licensed Social Worker and Certified Addiction Professional with a human service career spanning over thirty years. He attained his Masters of Social Work degree at Fordham University, Lincoln Center in New York City.
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