Can my grandfather (90) who is fairly healthy but thinks he may have a fatal stroke soon contact Hospice?

Can they help him? My 90 year old grandfather lives in a continuing care community. His wife died 7 months ago. He recently had a TIA and is scheduled for a cardiac stent in 2 weeks. He is fiercely independent.

He thinks he had another TIA the other day but as far as I know has not told any family. He tells a friend of mine a lot of things he never shared with his daughters. (She's an honorary daughter). He refused to call 911 and placed his DNR on his refrigerator. My friend feels unsure what to do since she knows things no one else knows. And now she is telling me in confidence.

I don’t know at what point we stop respecting his wishes. I know mini-strokes can cause dementia in a person. I’m going to call him today (he lives in another city from me) and talk to him and see if he will tell me what’s really going on. I don’t think he will.

I am wondering, if a person is pretty much in sound mind but still thinks he will die within weeks, can he contact hospice himself? Would they be able to do anything for him? I think my grandfather wants to die peacefully and naturally but he is all alone and I’m not sure it is possible for us to do such a thing alone. I don’t know what his doctors have told him but I wonder if he’s hiding his fears from him. Or maybe he is just telling my friend all his fears and worries because he trusts her.