Neurological Spine Disorders

Our Team

Stanford Spine, Jon Park, MDJon Park, MD, FRCSC

Associate Professor, Neurosurgery
Director, Comprehensive Spine Neurosurgery
Director, Spine Neurosurgery Fellowship/Spine Research Laboratory

Dr. Park has extensive clinical practice at Stanford in outpatient minimally invasive spine surgery involving spine disc disease, degenerative spinal disorders and compression fractures. He also has special clinical interest in reconstruction of complex spine traumas and treatment of spinal tumors using Cyberknife Radiosurgery.

Dr. Park's research interest includes non-fusion dynamic spinal stabilization, artificial disc technologies, and regenerative spinal technologies.

Dr. Park completed his neurosurgical residency from the world renowned Montreal Neurological Institute. After completing a spine fellowship at UCLA, he was an Assistant Professor of Neurosurgery at the University of Washington prior to joining Stanford faculty.

John K. Ratliff, MD

Associate Professor, Neurosurgery
Co-Director, Division of Spine and Peripheral Nerve Surgery

Dr. Ratliff received his medical degree from Tulane University. He is fellowship trained in complex spinal reconstructive surgery and completed a research fellowship in neural regeneration and peripheral nerve repair at the National Institutes of Neurological Disorders and Stroke at the National Institutes of Health.

Dr. Ratliff treats degenerative diseases of the cervical, thoracic and lumbar spine as well as primary and metastatic spinal tumors, spinal infections and chronic pain disorders. He is experienced in minimally invasive spine surgery, revision surgeries and spinal reconstruction, including the use of instrumentation and implants, and artificial disc replacements. Dr. Ratliff is well versed in the evaluation and treatment of nerve compression syndromes and peripheral nerve trauma. His current research focuses on preventing complications in spine surgery, assessing patient outcomes, and developing population-based metrics for assessing surgical outcomes.

Lawrence M. Shuer, MD

Professor, Neurosurgery
Clinic Chief and Vice Chair of Quality, Neurosurgery

Dr. Shuer received his BA and MD from the University of Michigan. He completed his residency in neurosurgery at Stanford University before joining the faculty.

He is a past president of the California Association of Neurological Surgeons. His research interests include syringomyelia, pediatric disorders, and degenerative spine disease.


Nurse Practitioners

Candice Osuga Lin, NP

Candice earned her BS in Biological Sciences from the University of California, Davis. She received her Master of Science in Nursing from Vanderbilt University.

She has been active in the care of adult and pediatric neurosurgery patients. Her interests include neuro-oncology and degenerative spine disease.



Vania Bernatsky, NP

Vania received her Master of Science in Nursing with a minor in Education from the University of California, San Francisco in 2001. She is certified as an Acute Care Nurse Practitioner through the American Academy of Nurse Practitioners, and is a member of the American Association of Neurosciences Nursing, American Association of Nurse Practitioners and Sigma Theta Tau.

She has spent her career caring for patients both in acute care inpatient, as well as outpatient settings.

Carrie Chan, NP

Carrie Chan joined the spine team in November 2012. Previously, she worked at the University of Southern California with neurosurgery spine patients on both an inpatient and outpatient basis. She is a board-certified Acute Care Nurse Practitioner and certified in Nursing Professional Development. Prior to specializing in neurosurgery care, Carrie was an educator for six years and also worked in the operating room, intensive care unit and post anesthesia recovery unit.

Carrie is also an assistant faculty member at California State University, Los Angeles and recently was the moderator for the LAC+USC Neurotrauma Symposium.

Alisa Kearney, MSN, NP-C

Alisa joined the Department of Neurosurgery in 2012 and provides care to patients in the Stanford Spine Center. She obtained her Master of Science degree in Nursing from Seattle Pacific University in 2011. She is nationally certified as a family nurse practitioner.

Stanford Medicine Resources:

Footer Links: