Dr. Marek is the worst and I would not recommend him to anybody. He told me my procedure, a biopsy, was covered but then sent me a bill.
He also has never, ever, ever, once called me. I waited three weeks for biopsy results. Left a message at my dentist office. They said he would call me. He didn't. Left a message at his ident office. Still didn't call me. It was only when I called and he happened to be right there that he even got on the phone with me to give me my results over a month after the procedure.
Since then I've left numerous messages to discuss the bill. I'm always told that they'll give him the message. Think he's called me back? Nope.
Stay away from Dr. Mark Niznikiewicz like the plague - I wouldn't be surprised if he actually gives people the plague because apparently he hates his patients and shows no respect or care for another human being.