Lydia Sellers, MSW Clinical Social Worker, Advocating Success for Kids (ASK) Program Image Print Profile Request an Appointment Locations Boston Boston Children's Hospital 300 Longwood Ave. Boston, Massachusetts 02115 Listen Lydia Sellers, MSW Clinical Social Worker, Advocating Success for Kids (ASK) Program Medical Services Programs & Services General Pediatrics Certifications Licensed Clinical Social Worker (LCSW) Locations Boston Boston Children's Hospital 300 Longwood Ave. Boston, Massachusetts 02115