Children's Health℠ Specialty Center 1 Plano. 7609 Preston Road Plano, Texas 75024 469-303-7000. Mo-Fr 8:00-16:30. Children's Health℠ Specialty Center Dallas Campus. 2350 North Stemmons Freeway Dallas, Texas 75207 844-4CHILDRENS. Mo-Fr 8:00-16:30. Children's Health℠ Specialty Center Park Cities.