Our multidisciplinary DBS team

At OHSU, we take a team approach to deep brain stimulation treatment. This means patients receive care not only from pioneering neurosurgeon Dr. Kim Burchiel, but from our team of specialists at OHSU’s Brain Institute.

The multidisciplinary team specializes in movement disorders and works together to create a treatment plan customized for each patient based on their medical history and needs. Our team is comprised of specialists from:

  • Neurosurgery
  • Neurology
  • Physical therapy
  • Neuropsychology
  • Speech therapy

Our team is committed to partnering with referring providers from any region.

Meet our team members


DBS TeamKim J. Burchiel, M.D., F.A.C.S., has performed DBS surgery more than 1,000 times. He trained in France under the neurosurgeon who developed the procedure, then became the first to bring DBS surgery for Parkinson’s disease to the United States. In 2011, he developed “asleep” DBS surgery, offering comfort and optimal results. He is an internationally recognized expert on DBS and other topics.

DBS TeamJustin S. Cetas, M.D., Ph.D., is an assistant professor of neurological surgery and chief of neurosurgery at the Portland VA Medical Center. He earned his medical degree and Ph.D. in Arizona before completing his residency and fellowship at OHSU.

DBS TeamAhmed M.T. Raslan, M.D., is an assistant professor of neurological surgery who joined OHSU’s neurological surgery faculty in 2012. His interests include pain surgery, functional and stereotactic neurosurgery, and epilepsy surgery.


DBS TeamShannon Anderson, M.P.A.S., P.A.-C., is our DBS Program coordinator.  She helps smooth the patient-evaluation process by coordinating assessments between specialists and manages the internal pulse generator programming process.

DBS TeamMatthew A. Brodsky, M.D., is an associate professor of neurology who has given lectures around the world on Parkinson’s disease. He also directs annual courses on deep brain stimulation.

DBS TeamKathryn A. Chung, M.D., is an assistant professor of neurology who joined the OHSU movement disorders faculty in 2004. Her research interests are focused on Parkinson’s, including understanding dyskinesia, and gait and balance abnormalities.

DBS TeamAntonia Gragg, M.S., P.A.-C., is an physician assistant with the Department of Neurological Surgery. She works directly with Dr. Kim Burchiel to care for Parkinson’s and essential tremor patients during their treatment and clinic visits. She works collaboratively with the Department of Neurology’s Movement Disorder Clinic to care for patients with deep brain stimulators.

DBS TeamAmie Hiller, M.D., combined interests in health policy and medicine by completing fellowships in the Washington, D.C., office of U.S. Sen. Jack Reed and in OHSU’s Parkinson's Disease and Movement Disorders Program. She completed her residency in neurology at Brown University.

DBS TeamJeff A. Kraakevik, M.D., is an assistant professor of neurology who heads the development of medical student and resident education for OHSU’s Department of Neurology and the Portland VA Medical Center. His research interests include the gait and balance problems that accompany Parkinson’s.

Team care coordinator

DBS TeamLisa Mann, R.N., B.S.N., M.A., coordinates our interdisciplinary care and provides support to patients and families. She earned her nursing degree from Johns Hopkins University School of Nursing.

Neuro rehabilitation team

DBS TeamLinda Bryans, M.A., CCC-SLP, is a certified speech-language pathologist who specializes in Parkinson’s and other movement disorders. She is a senior instructor in the Northwest Clinic for Voice and Swallowing at OHSU as well as an adjunct faculty member in Portland State University’s Speech and Hearing Sciences Department.

DBS TeamMelanie B. Fried-Oken, Ph.D., CCC-SP, is a certified speech-language pathologist who has been working with adults with communication disorders since 1979. She is a professor of neurology, pediatrics, biomedical engineering and otolaryngology, and an adjunct professor in the Communication Disorders and Sciences Department at Portland State University. She also leads a research team.

DBS TeamKittima Leelaamornvichet, D.P.T., is a physical therapist who specializes in patients with neurological and geriatric problems. She’s also interested in Parkinson’s disease, post-concussive syndrome, and balance and vestibular disorders.

Michal Rubin, M.S., CCC-SLP, is a certified speech-language pathologist.

DBS TeamJyndia Schaible, , P.T., D.P.T., is a physical therapist who’s especially interested in brain and spinal cord injuries, Parkinson’s disease, multiple sclerosis, and balance and vestibular disorders.


DBS TeamJeffrey P. Schlimgen, P.T., N.C.S., is a physical therapist and neurologic certified specialist who specializes in treating stroke, multiple sclerosis, traumatic brain injury, Parkinson's and other movement disorders.


DBS TeamAndrea S. Serdar, P.T., N.C.S., is a physical therapist and neurologic certified specialist involved in researching the cause of falls among patients with multiple sclerosis, and the use of exercise in delaying the progression of Parkinson’s.

DBS TeamMarvin Smith, D.P.T., is a physical therapist who treats spinal pain and pain from accidents, arthritis and falls. On OHSU’s rehab team, he works with patients with Parkinson’s, multiple sclerosis, strokes and other conditions.

DBS TeamJenny L. Wilhelm, P.T., D.P.T., N.C.S., is a physical therapist and neurologic certified specialist with advanced training in Parkinson’s disease. She also specializes in traumatic brain injury and geriatric clients. She is part of a team that provides Parkinson’s education to therapists across Oregon and Washington.

Rosanne Yee is an occupational therapist who specializes in spinal cord injury, stroke, traumatic brain injury, concussion, Parkinson’s disease and multiple sclerosis. She is part of a team that provides Parkinson’s education to therapists across Oregon and Washington.

Psychology and social work professionals

James Bryan, Ph.D., is a neuropsychologist certified by the American Board of Clinical Neuropsychology. He has been in practice more than 20 years.

Nathan Hantke, Ph.D., specializes in the neuropsychological evaluation of adults, with experience assessing cognitive problems across a wide range of diagnoses, including memory disorders, head injury, movement disorders, and epilepsy.

Meghan Marty, Ph.D., is a clinical psychologist with training and experience helping clients cope with chronic health issues.

Sally Stevens, LCSW, is a social worker for Parkinson’s Resources of Oregon with an extensive background in therapy and counseling services.

Aaron Vederman, Ph.D., is a neuropsychologist who focuses on the assessment and diagnosis of dysfunctions in cognitive functioning.