If you would like to learn more about MSSCA, do not hesitate to contact us. Mat-Su Services for Children & Adults, Inc. 1225 W Spruce Ave. Wasilla, Alaska 99654 Office Hours: Mon-Fri, 8:00 am to 5:00 pm Phone: 907-352-1200 Fax: 907-352-1249 Email View Larger Map