H.R.4736: To amend part B of title XVIII of the Social Security Act to repeal limiting charges under the Medicare Program for non-participating physicians and to preempt State laws that prohibit balance billing.

Amends title XVIII (Medicare) of the Social Security Act to repeal the limitiation on actual charges to a beneficiary under Medicare for services by a nonparticipating physician or nonparticipating supplier or other person who does not accept payment on an assignment-related basis for a physician's service.

Prohibits a state from imposing a limit on the amount of charges, in relation to recognized payment amounts under any health plan or otherwise, a physician may impose for services furnished. Preempts any such limit.