Frequently asked questions Does Montana Have Reciprocity? No – patients from other states must register with the DPHHS. Legal protections for qualified patients are limited to Montana registry ID cardholders. If you are a medical marijuana patient from out-of-state, Montana’s medical marijuana laws no longer protect you. (From 2003 to 2011, Montana extended legal protections to cardholders from other states.) Some states like Nevada do recognize Montana medical marijuana cards as valid, though, so hopefully one day the favor will be returned!