Medicare Advantage, Medicaid and Commercial cardholders can now use their Benefits Mastercard Prepaid Card at 200-plus Weis Market stores in Delaware, Maryland, New Jersey, New York, Pennsylvania, Virginia and West Virginia to buy approved items. The NationsBenefits card program permits health plans to provide members with benefit funds configured and available to various programmatic requirements, among them over-the-counter medications, groceries, wellness items and other services.