Even in this time of uncertainty, Mayo Clinic is a place for hope and healing — and we're committed to delivering the care you need. With options for face-to-face, virtual visits or phone appointments in adherence with federal and state executive orders and guidance. Nadia N. Laack, M.D., is a radiation oncologist at Mayo Clinic's campus in Rochester, Minnesota. Her specialties include radiation oncology, pediatric and adolescent medicine and brain tumors. Additionally, she treats many forms of cancer, including brain tumors, lymphoma and sarcoma. She has expertise in gamma knife surgery, IMRT (intensity-modulated radiation therapy), proton therapy, stereotactic body radiotherapy and stereotactic radiosurgery. U.S. News & World Report consistently ranks Mayo Clinic among the top hospitals for cancer in the nation.