Medi-Cal Estate Recovery Claim

Dear Len & Rosie,

My wife and I and my recently deceased mother held title to a house in joint tenancy that all three of us bought together about seven years ago. My mother was on Medi-Cal for five years. Does Medi-Cal have a legal claim against this property? I was under the impression that joint tenancy property was immune from their claim but Medi-Cal's claim form seems to indicate otherwise.