Dr. Usuki's primary research and clinical practice includes neuro-oncologic patients with primary malignant brain (glioma, ependymoma, meningioma, and schwannoma)/spine tumors, metastatic lesions to the brain/spine, and benign brain/spine lesions and applying cutting edge radiation treatments such as Stereotactic Radio Surgery (SRS), Brain Lab Cranial Elements SRS, Brain Lab Cranial Multiple Metastases, Intensity Modulated Radiation Therapy (IMRT), VMAT- volumetric-modulated arc therapy, and Image Guided Radiation Therapy (IGRT) with Robotics to the brain and spine. Dr. Usuki serves as the Co-Director of the University of Rochester Spinal Radiosurgery program.