U.S. HealthWorks, Inc. is an American health care provider network headquartered in Valencia, California. It offers occupational health care and urgent care services, preventive care, pre-employment and post-offer exams and screening, and return-to-work rehabilitative care. U.S. HealthWorks operates as a wholly owned, for-profit subsidiary of Dignity Health. As of July 2014, U.S. HealthWorks had 218 work sites in 19 states and more than 3,300 employees. In 2001, HealthSouth sold its occupational medicine division to U.S. HealthWorks for an undisclosed amount. The deal, reported to have been for $30 million, added 99 centers, more than doubling U.S. HealthWorks operations and making it one of the largest provider networks in the United States along with Concentra. In 2003, U.S. HealthWorks agreed to pay $900,000 to the California Department of Insurance following a three-year investigation of 25 facilities in California. It was alleged that U.S. HealthWorks would not always file a "Doctors First Report of Injury" as required by California law, which would distort the risk experience used by insurance underwriters to calculate premiums. In the agreement, U.S. HealthWorks did not admit liability.