Ryan, Mark L. MD Mom Approved Children's Health Specialty Center Dallas; 2350 N Stemmons Fwy building F Suite F4300 Dallas, Texas 75207 214/456-6040 https://www.childrens.com/doctor-profile/mark-leo-ryan Loading... No Records Found Sorry, no records were found. Please adjust your search criteria and try again. Maps failed to load Sorry, unable to load the Maps API. Dr. Ryan also has a location at: UTSW General Surgery Plano: 7609 Preston Rd., Suite P1100, Plano, TX 75024 P: 469/497-2501