Center for Neurosciences » Physician Directory

Photo of Nadia Fike, M.D., PHD

Nadia Fike, M.D., PHD

Dr. Chacon earned her medical degree from the Yale School of Medicine. She completed her residency in pediatrics at Yale – New Haven Hospital and her residency in pediatric neurology at Boston Children’s Hospital. She then went on to complete her fellowship in clinical neurophysiology at the University of Texas Health Sciences Center. Dr. Chacon is certified through the American Board of Psychiatry and Neurology with special qualifications in child neurology.…Read More
Center for NeurosciencesAddress 2450 E. River Road Tucson AZ 85718 Phone: 520-326-2661Website: www.neurotucson.com
Biography

Dr. Chacon earned her medical degree from the Yale School of Medicine. She completed her residency in pediatrics at Yale – New Haven Hospital and her residency in pediatric neurology at Boston Children’s Hospital. She then went on to complete her fellowship in clinical neurophysiology at the University of Texas Health Sciences Center.

Dr. Chacon is certified through the American Board of Psychiatry and Neurology with special qualifications in child neurology. She is a member of the American Epilepsy Society and the Tuberous Sclerosis Advisory Board.

She is currently on the staff of Tucson Medical Center, University Medical Center, St. Joseph’s Hospital and the Children’s Clinic for Rehabilitation Services. She also volunteers as a pediatric neurologist at St. Andrew’s Clinic, Nogales, which provides services to children from Mexico with a variety of neurologic disorders and disabilities. Prior to joining the Center for Neurosciences she was in private practice in Fort Worth, Texas. She has been with the Center for Neurosciences since 2009.

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2450 E. River Road Tucson AZ 85718

Photo of John Gray, M.D.

John Gray, M.D.

Dr. Gray completed undergraduate training in physical therapy and worked as a physical therapist with children before completing a fellowship in development disabilities at Georgetown University. He went on to earn his medical degree from the University of Minnesota and completed residencies in both pediatrics and neurology with a special competency in pediatric neurology from the University of Minnesota Hospitals/Clinics.…Read More
Center for NeurosciencesAddress 2450 E. River Road Tucson AZ 85718 Phone: 520-326-2661Website: www.neurotucson.com
Biography

Dr. Gray completed undergraduate training in physical therapy and worked as a physical therapist with children before completing a fellowship in development disabilities at Georgetown University. He went on to earn his medical degree from the University of Minnesota and completed residencies in both pediatrics and neurology with a special competency in pediatric neurology from the University of Minnesota Hospitals/Clinics.

Dr. Gray was certified by the National Board of Medical Examiners, the American Academy of Pediatrics and the American Board of Psychiatry and Neurology, and has completed recertification for child neurology with the American Board of Psychiatry and Neurology.

He is Clinical Associate Professor at the University of Arizona’s Health Sciences Center, Departments of Pediatrics and Neurology. He is currently on the staff of Tucson Medical Center, University Medical Center, St. Joseph’s Hospital and the Children’s Clinic for Rehabilitation Services. He also volunteers as a pediatric neurologist at St. Andrew’s Clinic, Nogales, which provides services to children from Mexico with a variety of neurologic disorders and disabilities. Dr. Gray has been a pediatric neurologist in Tucson since 1994 and has been with the Center for Neurosciences since 2006 when Pediatric Neurology Associates and Neurological Associates of Tucson merged to form the current group practice.

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2450 E. River Road Tucson AZ 85718

Photo of Tom Norton, M.D.

Tom Norton, M.D.

"Dr. Norton earned his medical degree from Loyola University’s Stritch School of Medicine and completed his internship at Cook County Hospital in Chicago. Dr. Norton completed neurosurgery residencies at Cook County Hospital and the University of Illinois. Dr. Norton is certified by the National Board of Medical Examiners and the American Board of Neurological Surgery. He is a clinical lecturer at the University of Arizona, University Medical Center and has been with the Center for Neurosciences since 1973."Read More
Center for NeurosciencesAddress 2450 E. River Road Tucson AZ 85718 Phone: 520-795-7750Website: www.neurotucson.com
Biography

“Dr. Norton earned his medical degree from Loyola University’s Stritch School of Medicine and completed his internship at Cook County Hospital in Chicago. Dr. Norton completed neurosurgery residencies at Cook County Hospital and the University of Illinois.

Dr. Norton is certified by the National Board of Medical Examiners and the American Board of Neurological Surgery. He is a clinical lecturer at the University of Arizona, University Medical Center and has been with the Center for Neurosciences since 1973.”

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2450 E. River Road Tucson AZ 85718

Photo of Dinesh Talwar, M.D.

Dinesh Talwar, M.D.

Dr. Talwar earned his medical degree at the All India Institute of Medical Sciences in New Delhi, India. During his residency, he served as Chief Resident in neurology and child neurology at the University of Minnesota Hospitals/Clinics where he also completed a fellowship in clinical neurophysiology. Dr. Talwar is certified by the American Board of Pediatrics, the American Board of Neurology with special qualification in child neurology, the American Board of Clinical Neurophysiology and in clinical neurophysiology by the American Board of Psychiatry and Neurology.…Read More
Center for NeurosciencesAddress 2450 E. River Road Tucson AZ 85718 Phone: 520-326-2661Website: www.neurotucson.com
Biography

Dr. Talwar earned his medical degree at the All India Institute of Medical Sciences in New Delhi, India. During his residency, he served as Chief Resident in neurology and child neurology at the University of Minnesota Hospitals/Clinics where he also completed a fellowship in clinical neurophysiology.

Dr. Talwar is certified by the American Board of Pediatrics, the American Board of Neurology with special qualification in child neurology, the American Board of Clinical Neurophysiology and in clinical neurophysiology by the American Board of Psychiatry and Neurology.

He is Clinical Associate Professor at the University of Arizona Health Sciences Center, Departments of Pediatrics and Neurology. Dr. Talwar is currently on the staff of Tucson Medical Center, University Medical Center, St. Joseph’s Hospital and the Children’s Clinic for Rehabilitation Services. Dr. Talwar has been a pediatric neurologist in Tucson since 1995 and has been with the Center for Neurosciences since 2006 when Pediatric Neurology Associates and Neurological Associates of Tucson merged to form the current group practice.

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2450 E. River Road Tucson AZ 85718