Dr. Jon-Michael Castelli
Dr. Jon-Michael Castelli brings years of experience caring for children in complex hospital settings to deeply personal pediatric care.
Years spent caring for children with serious illnesses taught him how important it is for families to have a physician who knows their child and stays involved when care becomes complicated. He brings that perspective to prevention, continuity, and helping parents navigate decisions with confidence. A Duke graduate and Alpha Omega Alpha honoree at The Ohio State University College of Medicine, he completed pediatric residency at Stanford’s Lucile Packard Children’s Hospital. He spent a decade as a pediatric hospitalist and has served in medical director roles. At home in San Francisco, he enjoys cooking for his family, traveling, and cheering for the Steelers with his wife and two daughters.
Exceptional physicians. A different model of care.
Our physicians bring deep clinical expertise, rigorous training, and a shared commitment to knowing the people they care for. Our primary care physicians maintain deliberately small patient panels, giving them the time to build meaningful relationships, think ahead, and take personal responsibility for your health.
Supported by experienced care teams, specialist colleagues, and an extensive external specialist network, they combine deeply personal attention with the reach and resources of a broader, independent practice. Together, they help members navigate complex healthcare decisions and thoughtfully evaluate advances in medicine, with clinical judgment and patient safety at the forefront.