John L. Hays, MD, PhD

Medical Oncologist

Dr. John L. Hays is a Medical Oncologist in Columbus, OH with special training and skill in treating cancer and providing medical care using chemotherapy and other medications. Medical oncologists are often the main health care providers for cancer patients. As a Medical Oncologist, John L. Hays, MD, PhD performs chemotherapy, hormonal therapy, biological therapy, targeted therapy, or immunotherapy. Medical Oncology is the diagnosis, treatment, and post-treatment care of cancer patients. Significant diseases and conditions treated by Medical Oncologists include skin cancer, breast cancer, lung cancer, colon cancer, brain cancer, bone cancer, bladder cancer, and anal cancer. Medical tests, procedures and therapies provided by Medical Oncologists include chemotherapy, hormonal therapy, biological therapy, targeted therapy, and immunotherapy.

An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.