To become a Hartist apply here
http://www.disabledartists.org/apply

No matter when you were last approved as a Hartist, you do need to reapply each year in January. If you miss January, you can still renew in June for the rest of the year.
Note: you still need to qualify according to the description on the application.
Note: Each Hartist has to opportunity to receive free art supplies from our program for up to 5 years.