. >> you would never guess that 54-year-old monica flagg had any serious health issues. fair to say you had an active lifestyle. >> we were very active. >> a lot of traveling. >> we had a lot of fun. >> she loves gardening and spending time on the water with her husband, steve. that is when she's not busy running her home health care business. but even with her busy life, monica said she always took god care of her health. take me back to the spring and summer of 2012. you had a doctor's appointment, had some blood work done. tell me about that. >> i do my annual physical every year. i'm real faithful to my health. i had gone back to my primary care, and for about three years, she had been watching my blood. >> an elevated m protein can in >> she said i think you need to see one of the best doctors around and find out what's going on. let's just get a professional opinion from a hemetologist. >> that's when monica went to see farid fata, who specialized in blood cancers. dr. fattah was might have gan oncology. here he is in a promotional video for his clinic. >> i receiv

but hey, you're busy. >>> monica flagg had just gotten the shock of her life. after beginning chemotherapy for a potentially fatal condition, she was told she did not have cancer. i think about that moment, what it must have been like to have someone tell you you don't have cancer. i mean, you want to shout it to the world? i called everybody i knew. it was -- i was extremely happy. but i had a lot of anger. >> anger because this young doctor, soe maunglay, also her misdiagnosis was no innocent mistake. after reviewing her charts, he concluded that dr. fata had been lying to monica all along. >> if i see a patient one time make a decision quickly on a a mistake. but this patient has been followed for a long time. >> he said to me, you need to find a new doctor. i will help you get your records. i don't want you to see dr. fata again. >> why was dr. maunglay so suspicious of his boss? it turns out, he had questions about dr. fata's aggressive treatment style for months. chemo to patients who were far too frail for the treatment. >> i always felt like, you know,