Our Team

Gary Heit Ph.D, MD

Gary Heit Ph.D, MD

Co-Founder, Medical Director

Dr. Heit received his Ph.d. in neuroscience from UCLA and his M.D. from Stanford. After serving for 6 years as an Assistant Professor of Neurosurgery and Director of Functional Neurosurgery at Stanford, he joined the neurosurgery staff of the Permanente Medical Group of Northern California. He went to Cuzco, Peru, on a volunteer surgical mission where he performed pediatric and intracranial surgery.

Monica A. Gerstner-Mosko, RN

Monica A. Gerstner-Mosko, RN

Co-Founder, Board Member

Ms. Gerstner-Mosko obtained her nursing degree after being the lead neurosurgical technician at Stanford University Medical Center. Thereafter, she began practice in the Medical-Surgical intensive care unit at Stanford and is now the nurse coordinator for Interventional Radiology at Stanford University. Ms. Gerstner-Mosko has volunteered on surgical missions in Nicaragua, Peru, India and China and brings extensive experience to the organization.

Ivan Bernstein, MPH, MSPAS

Ivan Bernstein, MPH, MSPAS

Board Member

Mr. Bernstein obtained his MPH and MSPAS at Touro University and his Social Psych/International Relations undergraduate degrees at UCLA. He currently works in Functional Neurosurgery and Pain Management at Kaiser Permanente. Mr. Bernstein has volunteer experience in Family Medicine locally as well as in the Fiji Islands.

Katie Parafinczuk, PT, DPT, NCS

Katie Parafinczuk, PT, DPT, NCS

Board Member

Katie received her B.S. in Biology from Emory University, and a DPT degree (three year doctorate) from Arcadia University. She is a senior therapist on the rehabilitation team at Kaiser Permanente in Redwood City where she specializes in neurologic physical therapy. During her time at Kaiser, Katie has completed a residency to become a clinical specialist in neurology (NCS). She continues working as a faculty member and clinical mentor within the residency program.

Marc A. Vanefsky, MD

Marc A. Vanefsky, MD

Board Member

Dr. Vanefsky is the Regional Chief of Neurosurgery for the Southern California Permanente Medical Group. He is also the director of Cerebrovascular Neurosurgery. He is an associate Professor of Neurosurgery at the University of California, Irvine. He completed his Neurosurgical Residency at Stanford in 1996 and was the first Cerebrovascular Fellow at Stanford.

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