From the website:
Big Tree Pediatrics, Derby Pediatrics, Silver Creek Pediatrics, and Dunkirk Pediatrics have pediatricians, physician assistants, and pediatric nurse practitioners that work as a team to provide quality medical care for children from birth through age 21. Our offices are located in Hamburg, Derby, Dunkirk and Silver Creek, New York and we service the healthcare needs of pediatric and adolescent patients throughout the Western New York area.