Meet William Sierra, PA: An Essential Member of the RBK Pediatrics Team
William Sierra, PA brings over 40 years of experience as a Physician Assistant to RBK Pediatrics, where he has provided compassionate care for more than five years. His extensive medical expertise, paired with a genuine love for children, makes him a vital part of our pediatric practice.
Originally from New York City and raised in Flushing, Queens, PA Sierra now resides in Babylon, Long Island. His journey in healthcare began at Good Samaritan Hospital Medical Center in Emergency Services, where his passion for pediatrics blossomed. He believes that healthy children lay the foundation for successful adults, and he is committed to giving every child the best start in life.
Families at RBK Pediatrics appreciate PA Sierra’s caring and approachable nature. He thrives on the energy and joy that children bring to the practice, along with the deep commitment that parents have for their children's well-being. PA Sierra takes pride in building lasting relationships with families, ensuring they feel supported throughout their healthcare journey.
Outside of work, William enjoys reading, listening to music, and spending quality time with his grandchildren. He and his wife have two sons and four grandchildren, cherishing family moments together. PA Sierra’s family heritage extends beyond the U.S., with roots in Colombia and Panama.
His advice for parents? Spend quality time with your children, be a parent rather than just a friend, and instill values of respect and kindness. For staying healthy, PA Sierra emphasizes maintaining a positive attitude, seeking the good in others, and always being ready to lend a helping hand.
At RBK Pediatrics, we are proud to have PA William Sierra as a key member of our team, where his dedication to pediatric care and strong family values truly shine.
