Dr. Oz is being dragged to court by an L.A. Armenian meat market owner ... claiming the former TV doc falsely tied her shop to massive healthcare fraud and the mafia in a viral video. According to a new lawsuit -- obtained by TMZ -- Anna Ivanyan , who owns Tigranakert Meat Market in Van Nuys, says Oz trashed her reputation by featuring her business in a clip about alleged fraud in the Armenian community. In late January ... Oz posted a video across social media showing him riding in a car and