MedStar Health is a not-for-profit healthcare organization. It operates more than 120 entities, including ten hospitals in the Baltimore–Washington metropolitan area of the United States. It is the employer with the largest number of local employees in that area. MedStar contributes approximately $111 million in payroll tax to the District of Columbia, Maryland and Virginia each year. Additionally, as of 2012, MedStar Health provided almost $312 million in charity care and community benefit on an annual basis.