Are they cash-only for medical patients, or do they accept debit cards again?

They take debit cards for sure

Cannibis stores are prohibited from taking a bank or credit card, or a check.

Not sure I bring cash they do have a atm in there

Canpay works great

I'd bring in cash if I was you, instead of spending the charge you get for using the ATM

Cash or the canpay app, they also have an atm in the lobby