
Overview
As a general pediatrician, David Castellan, MD, cares for children and adolescents from birth through age 18. He provides a variety of services to help keep kids healthy, including well-child visits, physical exams, immunizations and diagnosis and treatment of illnesses and injuries.|Helping parents find solutions to problems and improving health for the children he treats are the things Dr. Castellan enjoys most about his work as a pediatrician.|Originally from Washington, D.C., Dr. Castellan served 15 years in the Navy. In his spare time, he enjoys biking and visiting his grandchildren.
His top area of expertise is Arthrogryposis Multiplex Congenita.
His clinical research consists of co-authoring 7 peer reviewed articles. MediFind looks at clinical research from the past 15 years.
Insurance
Accepted insurance can change. Please verify directly with the provider.
Accepted insurance plans:
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- EPO
- HMO
- POS
- PPO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- OTHER MEDICARE PART D
- PPO
- EPO
- HMO
- PPO
- HMO
- POS
- PPO
- HMO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE PDP
- MEDICARE SNP
- OTHER COMMERCIAL
- OTHER MEDICARE
- OTHER MEDICARE PART D
- PPO
- INSURANCE PLAN
- MANAGED MEDICAID PLAN
- MEDICARE MAPD
- MEDICARE SNP
- EPO
- HMO
- PPO
- HMO
- INDEMNITY
- POS
- PPO
- EPO
- POS
- PPO
- OTHER MEDICAID
- STATE MEDICAID
- EPO
- PPO
- HMO
- MANAGED MEDICAID PLAN
- PPO
- OTHER COMMERCIAL
- EPO
- HMO
- POS
- PPO
- EPO
- PPO
Locations
55 Medical Park Drive, Lewisburg, PA 17837
Clinical Research
Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.
Geisinger Lewisburg - Pediatric Neurodevelopment
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.
Geisinger Lewisburg - Pediatric Neurodevelopment
Dr. Myers is a fellowship-trained specialist in neurodevelopmental pediatrics. His clinical and research interests include autism spectrum disorder, intellectual disability, language disorders, cerebral palsy and other motor disorders, genetics of neurodevelopmental disorders, and psychopharmacology. His research interests also include origins of variable expressivity of pathogenic genetic variants, within-task variability in language and other aspects of development, and epidemiology and natural history of neurodevelopmental disorders. Dr. Myers earned his medical degree from Thomas Jefferson University. He completed his residency at Geisinger Medical Center, and completed a fellowship in neurodevelopmental disabilities at Kennedy Krieger Institute/Johns Hopkins University School of Medicine. Dr. Myers is certified in neurodevelopmental disabilities, developmental-behavioral pediatrics and general pediatrics by the American Board of Pediatrics. Dr. Myers is highly rated in 2 conditions, according to our data. His top areas of expertise are Autism Spectrum Disorder, Micrognathia, Hypotonia, and Infantile Pneumothorax.
Geisinger Medical Center - Pediatric Infectious Disease
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.
Areas of Expertise
MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.
Learn more about MediFind’s expert tiers
- Experienced
- Arthrogryposis Multiplex CongenitaDr. Castellan isExperienced. Learn about Arthrogryposis Multiplex Congenita.

