Dr. Matias L. Chacon

Dr. Lopez Chacon is a pediatric neurologist at Johns Hopkins All Children’s Hospital in St. Petersburg, Florida. He specializes in neuromuscular medicine, any problems with the nerve, muscle or their connections, treating conditions such as spinal muscular atrophy, myasthenia gravis and muscular dystrophies. He also performs electromyography and nerve conductions studies in children of all ages. He joined the hospital staff in 2024. He was previously division chief of pediatric neuromuscular medicine at Boys Town National Research Hospital in Omaha, Nebraska. Dr. Lopez Chacon earned his medical degree from Pontificia Universidad Católica del Ecuador — School of Medicine. He completed a pediatric residency at John Stroger Jr. Hospital of Cook County in Illinois. He completed a residency in child neurology at Ann and Robert Lurie Children’s Hospital of Chicago. He then completed a pediatric neuromuscular medicine fellowship at Northwestern Memorial Hospital/Ann and Robert Lurie Children’s Hospital of Chicago. He speaks English and Spanish.

His clinical expertise encompasses Primary Lateral Sclerosis and Spinal Muscular Atrophy (SMA).

Dr. Chacon is board certified in American Board Of Psychiatry And Neurology. He is actively involved in clinical research, co-authoring 1 peer reviewed article.