Dr. Counelis



President, Bay Area Neurosciences 

Medical Director, Brain Tumor and Neuro-Oncology Program, John Muir Health

Clinical Instructor, UCSF Department of Neurological Surgery

Dr. Counelis is a Board Certified neurosurgeon who specializes in complex brain and spinal problems. He received his medical training at Tufts University School of Medicine in Boston. After a post-doctoral clinical fellowship in cerebral blood flow at UCLA, he completed his internship and six years of neurosurgical training at the Hospital of the University of Pennsylvania. During his training at the University of Pennsylvania, he completed fellowships in brain tumor research and complex spinal surgery. 

 In 2004, Dr. Counelis joined the medical staff at John Muir Hospital, performing surgical procedures at the of Walnut Creek facility. There, he was chosen as the Medical Director of the Brain Tumor and Neuro-Oncology Program in 2008. Dedicating his career to studying the brain and spine, Dr. Counelis has taken a special clinical interest in primary and metastatic tumors of the brain and spine, pituitary tumors, and stereotactic radiosurgery. He also has a special interest in minimally invasive spinal surgery, which has allowed for patients to spend less time in the hospital and heal in a timelier manner. In addition, he has joined the faculty at UCSF Department of Neurological Surgery as a Clinical Instructor, allowing him to teach future physicians and collaborate on complex brain and spinal surgery. 

Dr. George J. Counelis has full medical staff privileges at John Muir Hospital in Walnut Creek, CA 

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