Meet The Team

The Hoag Epilepsy Center has a multidisciplinary approach to treatment. The team includes highly specialized neurosurgeons, neurologists, neuropsychologists, psychiatrist, nurse practitioners, nurses, neurodiagnostic technologists and social workers to assist in the needs of each individual patient.

David Millett, M.D., Ph.D.

Program Director, Epilepsy

Dr. Millett is a board-certified neurologist specializing in seizures, epilepsy and electroencephalography (EEG). He received his BA from the University of California, Los Angeles (UCLA) and obtained boh his MD and PhD in 2001 from the University of Chicago. Dr. Millett returned to his native Southern California for his medical internship, neurology residency and two-year subspecialty training fellowship in Epilepsy and EEG at UCLA.

In 2007, Dr. Millett joined the faculty of Keck School of Medicine at USC and was given the task of establishing an epilepsy monitoring program to provide advanced epilepsy care for thousands of underserved patients within the Los Angeles Department of Health Services. Under Dr. Millett's guidance the epilepsy program at Rancho Los Amigos National Rehabilitation fourished, providing an array of services such as inpatient video-EEG monitoring, intracranial video-EEG minotoring, neuroimaging, neurocognitive evaluation, and epilepsy surgery. This program received a speical Merit Award from the County of Los Angeles in 2011, the same year Dr. Millett was recognized as the Earl I. Feldhorn Pediatric Epilepsy Faculty at the Keck School of Medicine at USC for his efforts to provide advanced epilepsy care to chidren with epilepsy.

Dr. Millett relocated to the Pickup Family Neurosciences Institute in 2014 where he is the director of the epilepsy program, and maintains an active role in research and education through his position as Adjunct Assistant Professor of Clinical Neurology in the Keck School of Medicine in USC. He is currently involved in numerous epilepsy-related research studies and educational projects including the use of brain-computer interface (BCI) technologies to analyze epileptogenic circuits in the human hippocampus and the cortical control movement with colleagues at USC and UCI. Dr. Millett is also completing a book on the role of electroencephaolography in the historical development of neuroscience, and he is developing a Web-based Atlas of EEG for training and education.

Charles Y. Liu, M.D., Ph.D.


As Hoag Epilepsy Program’s principal epilepsy surgeon, Dr. Liu is also the Surgical Director for the USC Comprehensive Epilepsy Center, one of the highest-volume surgical epilepsy programs worldwide. He is a member of the USC Cerebrovascular Team, adult brain tumor program, and pituitary team, and also serves as the Director of the USC Center for Neurorestoration. Within the LA County Department of Health Services, he serves as an Associate Chief Medical Officer and Chair of the Department of Neurosurgery and Orthopedic Surgery at Rancho Los Amigos National Rehabilitation Medical Center.

Dr. Liu is a Professor of Neurological Surgery, Neurology, and Biomedical Engineering and holds the Apuzzo Professorship for Advanced Neurosurgery at the USC Keck School of Medicine and Viterbi School of Engineering. He has also had a long-standing collaboration with researchers at Caltech, where he serves as a Visiting Associate on the faculty of the Division of Biology and Biological Engineering. Dr. Liu continues to hold a faculty appointment as Guest Professor in Neurosurgery at Hua Shan Hospital, Fudan University School of Medicine in Shanghai.

Playing an integral role in Hoag Epilepsy Program’s ongoing case conferences, Dr. Liu’s principal research interests relate to restorative neurosurgery involving elucidating strategies to restore function to the nervous system after injury due to trauma, stroke, or neurodegenerative disease. In addition, he is actively exploring unique strategies for patient-specific non-invasive neuromodulation.

Andrew Ly, M.D.

Program Director, Neurophysiology Services

Dr. Ly earned his medical degree from Chicago Medical School. He completed his neurology residency at Los Angeles General Hospital–University of Southern California Medical Center and completed a neurophysiology fellowship at USC University Hospital.

Dr. Ly directs the Neurophysiology and Epilepsy testing services at Hoag Hospital and brings an integrated approach to field epilepsy and seizure disorders. He works with a multidisciplinary team at the Hoag Epilepsy Center to provide an individualized comprehensive plan to the evaluation, diagnosis, and medical and surgical treatments of epilepsy.

Dr. Ly also provides extensive experience and expertise in the area of neurodiagnostic testing. This includes electromyelography and nerve conduction studies (EMG/NCS) for the diagnosis and treatment of nerve and muscle disorders. In addition, he leads a team in providing Intraoperative Monitoring (IO M) services during spine and brain surgeries to preserve and minimize neurological damage after surgery.

Jason Muir, M.D.

Program Director, Neurophysiology Services

Dr. Muir is a neurologist with special training and interest in epilepsy, sports neurology and nerve/muscle disorders. He attended medical school at the USC Keck School of Medicine after receiving his undergraduate degree at Occidental College where his interests included Biology and Neurobiology. Subsequently, he trained in internal medicine at SUNY Downstate in Brooklyn before returning to USC Keck School of Medicine to complete residency training in Neurology and subspecialty fellowship training in Neurophysiology.

During his Neurophysiology fellowship, Dr. Muir was directly involved with the care of epilepsy patients; guiding them through the evaluation to determine treatment options including new or experimental drug therapies, surgical treatment of epilepsy, or mechanical device implantation such as a neurostimulator. Additionally, he worked closely with Dr. Laura Kalayjian at LAC-USC Medical Center to manage and treat epilepsy during pregnancy.

Working with fellow neurologist Dr. Andrew Ly, Dr. Muir is now serving as the Director of Neurophysiology Services at Hoag Hospital.

Nurse Navigator

Sheena Dhiman, R.N., B.S.N., M.B.A.

Neurosciences Nurse Navigator

To view all Pickup Family Neurosciences Institute Nurse Navigators​.

Sheena Dhiman, R.N., has been working as a nurse at Hoag since 2008. She worked in the Neuro Intensive Care Unit for seven years before taking over responsibilities as a Nurse Navigator with Pickup Family Neurosciences Institute. She received her Healthcare Executive MBA from University of California, Irvine in 2012 and her Bachelors of Science in Nursing from Mount St. Mary’s College in 2008. Sheena has extensive experience taking care of patients with various neurological and spine disorders, as well as in critical care.