Advice Needed for My Father Entering Hospice, Los Angeles, CA

Hi, I'm looking for any advice form anyone who has gone through what I am about to go through. My dad was referred to hospice today, and I think he's on board with it. I am his durable power of attorney. He is a Kaiser patient and I got a call from the referal department about doing an assessment, and they said that they would sign him up then and there. I was worried that we would have no say in the company they they would contract, so that gave me pause, so I wanted to ask for advice from people who have had loved ones who have gone through this, or who have gone through this process. What are my options? What should I look for in a company? If anyone has used a Hospice company through Kaiser in Los Angeles, would you recommend them?

I don't even kow exactly what to ask or look for. I appreciate your help and advice.