My father has been awarded social security disability, how does it affect Medicaid.

I am very sorry for you, your mother, your family, and your father concerning his terminal illness.  This is a very difficult time for you.  The good news is the approval on both the Disability and the Medicaid.  This will free you to spend your time with your dad, to be present to him, and not worried about the applications and appeals. You will be receiving multiple letters concerning each of these benefits answering your questions completely.  Often, benefits are paid by SSA and the letter explaining it doesn't arrive until several days, or even a week, after the money did.  Because of the serious nature of your father's condition, I would anticipate that all will go through quickly. I wish I could tell you that mom gets all the back pay and Medicaid gets none, and the Nursing Home liability will go to zero, but I just don't have enough facts.  Time will tell, and rules and regulations written long before your father's illness became disabling will determine the outcome. Because I practice in a different state, I think it best for you to contact a local attorney to address the specific facts of your father's particular situation if you still have questions, or need answers sooner.