Yes, you should be concerned about the medical bills.  I am not familiar with Maryland law and suggest you consult an elder law attorney near you immediately.Unless Maryland has a law similar to Florida that protects the home from creditors, your mother's creditors (including Medicaid !!!) may be able to take the home to pay those debts.  Do not attempt to handle this without legal advice.  Medicaid has criminal penalties for trying to avoid what is owed.  An Elder Law attorney should be able to advise you and help resolve this.  In case it is appropriate to transfer title to the home by deed while your mother lives, it is important to do this immediately.