Don't think Northern Medical Supply is long for this world. Appears the store is only open three days a week now, but the only place you can make that discovery is on the front door of their store, which is what happened to me. Their automated telephone answering system, on the other hand, gleefully announces the store is open 6 days a week.
Also appears that they and their sister operation, Dahl Medical in Minneapolis, are woefully understaffed. I placed an order for medical equipment was promised a confirmation on that order, but it never came.
My money is on their going out of business soon, so BEWARE!