American Social Health Association - Learn about STDs/STIs ASHA. American Social Health Association. P.O. Box 13827. RTP, NC 27709. 1-919-361-8400. 1-800-227-8922. Since, 1914, a non-profit organization, the American Social Health Association has been dedicated to improving the health of individuals, families and communities with a focus on preventing sexually transmitted diseases and infections, STDs and STIs. in Public bookmarkswith 13827americanashaassociationboxhealthp.osocial