Can I put medical bills on a credit card or medical credit card to pay them off?

Be very careful. Moving medical debt onto a regular credit card or a deferred-interest medical card like CareCredit converts a debt that often carries no interest and strong consumer protections into high-interest consumer debt that can hurt your credit and lose its medical status. Deferred-interest cards are especially risky: if you don't pay the full balance before the promotional period ends, you're charged interest retroactively from day one. Before using any card, ask the provider for a zero-interest payment plan or financial assistance, which is almost always cheaper. The Consumer Financial Protection Bureau has warned about aggressive marketing of medical credit cards. Reserve cards for medical bills only when no better option exists and you can pay them off quickly.