Channel Islands National Park 
1901 Spinnaker Drive
Ventura, CA 93001
805-658-5730
http://www.nps.gov/chis
National Park: Birding, Camp, Fish, Hike, Picnic, Walk, Water Sports
Comprised of five in a chain of eight southern California islands near Los Angeles, Channel Islands National Park is home to a wide variety of nationally and internationally significant natural and cultural resources.
Can I purchase an permanently disabled person’s access pass for the national parks at your site?
For information about the Access Pass, I would inquire with the National Park Service and review their information found here https://www.nps.gov/planyourvisit/passes.htm on specific passes and where to acquire them. Many National Park Visitor Centers offer regular passes, but I would check ahead for the permanent passes, since those are issued on special bases.
Thanks for asking!