You can not go get a methadone dose at a hospital if you miss the methadone clinic. The methadone clinic is very structured and regulated to help addicts with withdrawal. You have to be responsible to get to the clinic at the correct times to get your dose of methadone. Unfortunately, the hospitals do not know if you are an addict or a part of the methadone clinic. Therefore, they can not treat you with methadone due to liability issues.