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.

Dr. Wilson is a board-certified and fellowship-trained ophthalmologist subspecializing in pediatric and adult strabismus. His clinical interests include pediatric and adult strabismus surgery. He earned his medical degree from the University of Pennsylvania, completed his residency at the University of South Florida, and his fellowship in pediatric ophthalmology at Hospital for Sick Children, Toronto, Canada. Dr. Wilson is highly rated in 2 conditions, according to our data. His top areas of expertise are Strabismus, Esotropia, Retinopathy of Prematurity, and Chemosis.

Grant Morris, MD, specializes in pediatric gastroenterology (GI) and liver conditions. He has experience treating inflammatory bowel disease, gastroesophageal reflux, constipation, abdominal pain, diarrhea and non-alcoholic fatty liver disease.|He performs diagnostic and therapeutic upper and lower endoscopies, including esophagogastroduodenoscopy (scope of the esophagus), colonoscopy and sigmoidoscopy (scope of the sigmoid colon).|“GI diseases can have a tremendous effect on a child’s (and their family’s) life,” says Dr. Morris. “My goal is to allow my patients and their families to live their best lives without limitation from GI issues.”|Beyond his own clinical interests — which include feeding difficulties, gastrostomy tubes, inflammatory bowel disease and liver disease — Dr. Morris engages his young patients by asking what they like. “I enjoy getting to know each child’s interests and hobbies,” he says.|This West Virginia native earned his Doctor of Medicine at the West Virginia University School of Medicine. He came to Danville when he served as chief pediatric resident at Geisinger Janet Weis Children’s Hospital. After a fellowship in pediatric gastroenterology, hepatology and nutrition at Nationwide Children’s Hospital in Columbus, Ohio, Dr. Morris is glad to be back in Danville.|“The lifestyle in Danville reminds me of where I grew up,” he says. “I am excited to return to the community and to Geisinger.”|When he’s not in the office, Dr. Morris enjoys the great outdoors — particularly hiking and exploring local farmers’ markets and festivals.|Referral|Pediatric patients with gastrointestinal and liver disease and symptoms. Diagnoses and treat pediatric gastrointestinal and liver diseases, such as inflammatory bowel disease, gastroesophageal reflux, constipation, abdominal pain, diarrhea, non-alcoholic fatty liver disease (NAFLD), and many others.|Performs diagnostic and therapeutic endoscopy, such as esophagogastroduodenoscopy, colonoscopy and sigmoidoscopy|clinical interest: feeding difficulties(ie. oral aversion) gastrostomy tubes, inflammatory bowel disease, liver disease. Dr. Morris is highly rated in 1 condition, according to our data. His top areas of expertise are Meckel's Diverticulum, Omphalocele, Umbilical Hernia, and Viral Gastroenteritis.

Marita Lind is a Pediatrics provider in Sunbury, Pennsylvania.

Dr. Bruno is a board-certified specialist in child abuse. His clinical interests include evaluating children who have been physically, sexually or emotionally abused or neglected and developing programs for them, as well as developing programs to prevent child abuse. Dr. Bruno attended The Pennsylvania State University, where he received his medical degree, and completed his residency at Children's Hospital, Columbus. Dr. Bruno is certified by the American Board of Pediatrics in pediatrics and child abuse pediatrics.

Matthew Wolcott is a primary care provider, practicing in Pediatrics and Internal Medicine in Sunbury, Pennsylvania. Dr. Wolcott is highly rated in 4 conditions, according to our data. His top areas of expertise are Lactate Dehydrogenase Deficiency, Renal Glycosuria, Essential Pentosuria, and Hyperglycerolemia.

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.

Raghuveer Puttagunta is a Pediatrics specialist and an Internal Medicine provider in Lewisburg, Pennsylvania. His top area of expertise is HIV/AIDS.

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.

Japinder Khosa, MD, is a skilled pediatric surgeon and urologist with over two decades of experience performing open and laparoscopic procedures. She specializes in pediatric urology, offering prenatal counseling for fetal urological conditions and treating patients from newborns to 16-year-olds. Her expertise covers a wide range of conditions, including congenital anomalies like bladder exstrophy, PUJ obstruction, hydroureteronephrosis, vesicoureteral reflux, hypospadias, disorders of sexual differentiation and posterior urethral valve (PUV) disorder, as well as common pediatric issues such as urinary tract infections, circumcision, undescended testes, kidney stones, bed wetting, and pediatric urologic emergencies.|Passionate about helping her pediatric patients and their families, she shares, “I love interacting with children and their parents. Bringing a smile to their faces makes my day.”|Committed to furthering the field of pediatric urological care, Dr. Khosa served as a committee member on the Board of Pediatric Surgery for Australia/New Zealand, where has played a pivotal role in setting the training curriculum, selecting candidates, and mentoring trainees. With a keen interest in clinical translational research, she has also contributed to numerous peer reviewed research publications and served as a reviewer for the Journal of Pediatric and Child Health.|Originally from India, Dr. Khosa obtained her medical degree from Grant Medical College in Bombay and completed a fellowship in pediatric surgery and urology at Royal Australasian College of Surgeons. She practiced pediatric surgery and urology in 3 major cities in Australia. Outside of her professional life, Dr. Khosa enjoys hiking and walking her dog with her spouse. Dr. Khosa is highly rated in 2 conditions, according to our data. Her top areas of expertise are Ureterocele, Posterior Urethral Valves, Urinary Tract Infection in Children, and Scrotal Masses.

David Anmuth, MD, specializes in allergy and immunology. He diagnoses, treats and manages conditions such as food allergies, eczema, hives and asthma in both children and adults. He also performs allergy skin testing, pulmonary function testing and immunotherapy (allergy shots).|Since starting his practice in 2007, Dr. Anmuth has truly enjoyed improving his patients’ quality of life. What he loves most about his job is hearing that a patient’s treatment plan has made a real difference in their day-to-day life. And that inspires him to continue to help all his patients live fuller, more active lives.|Dr. Anmuth attended medical school at Temple University School of Medicine. He completed his residency in pediatrics at Thomas Jefferson University, A.I. duPont Hospital for Children. He also completed his fellowship in allergy and immunology at Baylor College of Medicine, Texas Children’s Hospital.|Originally from Philadelphia, Dr. Anmuth is an avid Philadelphia sports fan. He also enjoys spending time with his wife and daughter, riding his bike, running the local trails and exploring new places. Dr. Anmuth is highly rated in 1 condition, according to our data. His top areas of expertise are Grass Allergy, Selective Deficiency of IgA, Vibratory Urticaria, and Chronic Spontaneous Urticaria (CSU).

Dr. Sundaresan is a board-certified physician specializing in pediatrics and internal medicine. Her clinical interests include preventive care and chronic disease management. Dr. Sundaresan attended Christian Medical College, Vellore, where she earned her degree in medicine. She completed her residency at Geisinger Medical Center. She is certified by the American Board of Pediatrics and by the American Board of Internal Medicine. Dr. Sundaresan is highly rated in 1 condition, according to our data. Her top areas of expertise are Sinusitis, Maturity Onset Diabetes of the Young, Type 2 Diabetes (T2D), and Relapsing Multiple Sclerosis (RMS).

Dr. Khurana is a board-certified general pediatrician. Her clinical interests include pediatrics. Dr. Khurana earned her medical degree from the University College of Medical Sciences in Delhi, India. She then moved to the United States, where she completed her residency at Brookdale University Hospital and Medical Center. Dr. Khurana is certified by the American Board of Pediatrics. She speaks fluent English and Hindi.|When she's away from work, Dr. Khurana enjoys painting and gardening.

Dr. Smith is a board-certified general pediatrician. She attended the Lake Erie College of Osteopathic Medicine, where she received her medical degree, and completed her residency at Geisinger Janet Weis Children's Hospital in Danville, Pa. Dr. Smith has been certified by the American Board of Pediatrics since 2013.|Dr. Smith’s clinical interests include breastfeeding medicine. She has been a Certified Lactation Counselor (CLC) since 2013 and an International.

Dr. Weeks is a board-certified and fellowship-trained specialist in developmental-behavioral pediatrics. His clinical interests include developmental disorders, including intellectual disability and autism. Dr. Weeks earned his medical degree from The Philadelphia College of Osteopathic Medicine. He completed his residency at Walter Reed National Military Medical Center in Bethesda, MD. He served as chief resident, then completed a fellowship in developmental-behavioral pediatrics at Madigan Army Medical Center and The University of Washington. Dr. Weeks then completed his active duty service time as medical director of the EFMP program while stationed at Brooke Army Medical Center in San Antonio. Dr. Weeks is certified by the American Board of Pediatrics in developmental-behavioral pediatrics as well as general pediatrics. His top area of expertise is Autism Spectrum Disorder.

Dr. Davis is a board-certified internal medicine physician and pediatrician. He attended Drexel University College of Medicine, where he earned his medical degree. He completed his residency at Geisinger Medical Center. Dr. Davis is certified by the American Board of Internal Medicine and the American Board of Pediatrics.|In his free time, Dr. Davis enjoys spending time with his family. This native of Philadelphia continues to root for Philadelphia professional sports teams. Dr. Davis is highly rated in 18 conditions, according to our data. His top areas of expertise are Zika Virus Disease, Galloway-Mowat Syndrome, Microcephaly, and Autosomal Recessive Primary Microcephaly.

Mary O'hara is a Pediatrics provider in Lewisburg, Pennsylvania. Dr. O'hara is highly rated in 1 condition, according to our data. Her top areas of expertise are Respiratory Syncytial Virus (RSV) Infection, Obesity in Children, Chronic Rhinosinusitis with Nasal Polyps (CRSwNP), and Asthma in Children.

Alexis Matarangas is a Pediatrics provider in Selinsgrove, Pennsylvania.

Karen Johnson is a Pediatrics specialist and an Anesthesiologist in Lewisburg, Pennsylvania. Dr. Johnson has been practicing medicine for over 17 years.

Justin Azar, MD, is a board-certified pediatrician specializing in pediatric critical care. He cares for patients with critical illness in the pediatric intensive care unit. Dr. Azar treats patients with multi-system organ failure and traumatic injuries that need surgery. He also provides post-operative care.|Dr. Azar earned his medical degree from George Washington University in Washington, D.C. He completed his residency at Children’s National Medical Center in Washington, D.C., where he served as chief resident. He followed that with a fellowship in pediatric critical care at Children’s Hospital of Pittsburgh. Additionally, Dr. Azar completed international clinical externships caring for children in Ecuador and Malawi.|He’s an active member of several professional organizations including The American Academy of Pediatrics, Society of Critical Care Medicine and Children’s Hospital Association.|Dr. Azar is an accomplished researcher. He’s published several peer-reviewed manuscripts and abstracts. His top areas of expertise are Cerebral Hypoxia, Malnutrition, and Traumatic Brain Injury.

Kevin Ferguson, MD, is a pediatric pulmonologist who specializes in the diagnosis and treatment of conditions affecting the respiratory system — like asthma, cystic fibrosis and chronic lung disease — in infants, children and adolescents.|Dr. Ferguson’s clinical expertise includes assessing and managing asthma. He’s also interested in caring for patients who have cystic fibrosis, neuromuscular disorders and those who require increased respiratory support to breathe better and protect their lungs.|Dr. Ferguson was a general pediatrician for 15 years prior to completing his advanced training in pediatric pulmonology at Westchester Medical Center in New York — a career path that continues to influence how he provides care.|“I still take that holistic approach,” he says, adding that he feels fortunate to have the opportunity to provide specialty care for children who need it. “It is a basic but inspiring job to help people breathe easier.”|Dr. Ferguson grew up in Long Island, New York, and came to Pennsylvania to attend medical school. After completing medical training at Geisinger, he decided to return here to team up with former classmate and Pediatric Pulmonology Program Director Jonathan Spahr, MD.|“It’s been and honor and pleasure to come back and work with Dr. Spahr,” he adds.|Dr. Ferguson lives in Danville with his wife, and they enjoy running, hiking, biking and visiting with family. His top areas of expertise are Secondary Immunodeficiency (SID), Cystic Fibrosis, and Newborn Jaundice.

Deliamille Pérez-Santiago, MD, is a board-certified pediatric endocrinologist. She treats children for a variety of conditions, including thyroid disease, Type 1 and Type 2 diabetes, short stature and early or delayed puberty.|Dr. Perez-Santiago earned her medical degree from the University of Puerto Rico School of Medicine in San Juan. She then completed her residency and fellowship at the University of Florida College of Medicine/Nemours Children’s Specialty Hospital in Jacksonville.|She’s a member of several professional organizations, including The Endocrine Society and Pediatric Endocrine Society. Dr. Pérez-Santiago is also an accomplished researcher.|A native of Puerto Rico, she speaks English and Spanish. Her top areas of expertise are Type 1 Diabetes (T1D), Pediatric Growth Hormone Deficiency, Non-Alcoholic Fatty Liver Disease, and Nonalcoholic Steatohepatitis (NASH).

Dr. Kisvarday is a board-certified physician specializing in internal medicine and pediatrics. Her clinical interests include resident teaching. Dr. Kisvarday obtained her medical degree from Louisiana State University. She then completed a residency at Geisinger Medical Center and a residency at the University of Texas Medical Branch, Galveston. She is certified by the American Board of Internal Medicine and the American Board of Pediatrics. Her top areas of expertise are Type 2 Diabetes (T2D), Maturity Onset Diabetes of the Young, Cerebral Palsy, and Hypereosinophilic Syndrome.

Jake Sequeira, MD, is a board-certified physician specializing in pediatric critical care.|Dr. Sequeira treats patients through age 13 who have serious, potentially life-threatening conditions. The conditions diagnosed and treated can vary widely in pediatric critical care but can include patients who have physical trauma or multiple organ dysfunction.|Dr. Sequeira was inspired to become a medical professional at a young age. “My little sister was very sick when we were younger,” he says. “The physicians who treated her are the reason I became a doctor.”|During his time at Geisinger, Dr. Sequeira has organized a team to help patients with difficult intravenous access. He’s also an educator in the pediatric residency program.|Originally from Virginia, Dr. Sequeira enjoys skiing, brewing beer and playing guitar in his spare time. His top area of expertise is Infantile Apnea.

Girmay Tekle-Yohannes, MD, is a board-certified pediatric hematologist oncologist. He treats pediatric cancers, including solid tumors and leukemia, and other blood conditions such as anemia, leukopenia, thrombocytopenia, pancytopenia, bleeding disorders and blood clotting disorders. He performs specialized procedures, including bone marrow aspiration, bone marrow biopsy, spinal tap and intrathecal administration of chemotherapy.|Dr. Tekle-Yohannes earned his medical degree from Jimma University in Jimma, Ethiopia. He followed that with residencies at Ethio-Swedish Children’s Hospital/Black Lion Hospital in Addis Ababa, Ethiopia, and Newark Beth Israel Medical Center/Children’s Hospital of New Jersey. After his residencies, he completed a fellowship in pediatric hematology and oncology at Cleveland Clinic Children’s Hospital.|A young child he met during his residency inspired him to practice in his specialty. “That child was exceptionally resilient,” he says. “Their family sold their house to purchase chemotherapy from abroad during a time of drug shortage.”|“The Children’s Oncology Group further consolidated my interest,” he notes. “They developed evidence-based and protocol-based cancer therapy and conducted multi-institution cooperative research that resulted in improvement of childhood cancer survival.”|Dr. Tekle-Yohannes is an accomplished researcher and presenter. He also serves as a clinical assistant professor of pediatrics at Geisinger Commonwealth School of Medicine in Scranton.|He's an active member of several professional organizations and societies, including The American Society of Pediatric Hematology/Oncology, Children’s Oncology Group, American Academy of Pediatrics and American Society of Hematology. His top areas of expertise are Acute Lymphoblastic Leukemia (ALL), Langerhans Cell Histiocytosis, Neurofibromatosis Type 1 (NF1), and Immune Thrombocytopenic Purpura (ITP).