Dr. Mary A. O'hara

Dr. Challman is a board-certified and fellowship-trained specialist in neurodevelopmental pediatrics. His clinical interests include developmental disorders, including intellectual disability and autism. His research interests include genetic etiologies of developmental disorders and developmental screening. Dr. Challman earned his medical degree from Georgetown University. He completed his residency at Mayo Clinic, Rochester, then completed a fellowship in neurodevelopmental disabilities at Kennedy Krieger Institute. Dr. Challman is certified by the American Board of Pediatrics in developmental-behavioral pediatrics and neurodevelopmental disabilities. Dr. Challman is highly rated in 2 conditions, according to our data. His top areas of expertise are Autism Spectrum Disorder, Increased Head Circumference, and Hypotonia.

Nicole Samies, DO, is a board-certified pediatrician specializing in infectious diseases. She treats children for a variety of viral, bacterial, fungal and parasitic infections, including bone and joint infections, meningitis, pneumonia, hepatitis, tuberculosis and herpes, as well as surgical and blood infections. She has a clinical interest in treating congenital infections.|“Watching a child improve and get better brings me the most joy and keeps me wanting to come back to work each day,” she says.|Dr. Samies earned her Doctor of Osteopathic Medicine from Edward Via College of Osteopathic Medicine in Spartanburg, S.C. After medical school, she completed a residency in pediatrics at Geisinger Medical Center in Danville. She followed that with a fellowship in pediatric infectious diseases at the University of Alabama at Birmingham.|From an early age, she wanted to pursue a career in medicine. “Having the ability to care for someone’s child is the most rewarding experience — knowing I could help make a difference in their life,” she says.|Dr. Samies is an active member in several professional organizations, including the Pediatric Infectious Diseases Society, Infectious Diseases Society of America, American Academy of Pediatrics and American Osteopathic Association.|Originally from a small town in South Carolina, Dr. Samies came to Danville for her residency. She returned to the area with her husband to be closer to family.|In her spare time, she enjoys hiking, running, bike riding, baking and spending time with family and friends. Dr. Samies is highly rated in 1 condition, according to our data. Her top areas of expertise are Neonatal Herpes and Childhood Pancreatitis.

Michael Goodstein is a Hospital Medicine specialist and a Pediatrics provider in Lewisburg, Pennsylvania. Dr. Goodstein is highly rated in 1 condition, according to our data. His top areas of expertise are Sudden Infant Death Syndrome (SIDS), Premature Infant, and Neonatal Sepsis.