I am familiar with Calvary Hospital which has a hospice team. I believe the hospital is in the Bronx but they serve the NYC area. Calvary Hospital specializes in caring for people at the end of their lives and is really good.
Most important about hospice is the services they can provide. Take them up on anything they offer. Even having a volunteer visit for an hour helps a lot. Most insurance companies just cover "hospice" and it's up to the agency to decide what services your brother will need and come up with a plan. Be honest about your brother's needs. Usually things like laundry and cleaning aren't covered services but many things are. It never hurts to ask.
My thoughts are with you. With the right hospice agency, this process can be peaceful.