Steve W. Ratton

EmCare Holdings, Inc. provides physician management services. Its services include emergency medicine, hospital medicine, acute care surgery, anesthesiology, radiology and teleradiology. The company was founded in 1972 and is headquartered in Dallas, TX.

Radiologix, Inc. used to provide diagnostic imaging services. It owned and operated multi-modality diagnostic imaging centers that used advanced imaging technologies such as positron emission tomography (PET), magnetic resonance imaging (MRI), computed tomography (CT) and nuclear medicine, as well as x-ray, general radiography, mammography, ultrasound and fluoroscopy. The company was founded by Derace L. Schaffer & Sami S. Abbasi in 1996 and is headquartered in Dallas, TX.

Part of Select Medical Holdings Corp., MATRIX Rehabilitation, Inc. operates rehabilitation facilities, managed care facilities, and other health care programs. The company is based in Plano, TX.

Envision Healthcare Corp. provides physician-led, outsourced medical services. It provides a broad range of coordinated, clinically-based care solutions across the continuum of care, from medical transportation to hospital encounters to comprehensive population health services. The firm solutions include healthcare system payers, community and government leaders, clinicians, improving patient experiences, improving clinical outcomes, reducing cost of care, improving provider experiences, and population health. The company was founded on November 1, 2005 and is headquartered in Greenwood Village, CO.

Emergency Medical Services LP provides emergency medical services. The firms services include emergency department professional services billing, non-emergency ambulance, fixed wing air ambulance, disaster response, international services and outsourced physician practice management services. The company is headquartered in Greenwood Village, CO.

Envision Healthcare Holdings, Inc. offers an array of healthcare-related services to consumers, hospitals, healthcare systems, health plans and local, state and national government entities. The company provides and manages community-based medical transportation services, including emergency, non-emergency, managed transportation, fixed-wing air ambulance and disaster response. It operates through two reportable segments: EmCare and American Medical Response. The EmCare segment provides integrated facility-based and post-acute care physician services to healthcare facilities in the United States. EmCare provides emergency, anesthesiology, hospitalist/inpatient care, radiology, tele-radiology and surgery services as well as other administrative services. The American Medical Response segment provides ambulance and other medical transportation services in the U.S. This segment provides emergency response services primarily under long-term exclusive contracts with communities and hospitals. Its emergency medical technicians provides and manages community-based medical transportation services, including emergency 911, non-emergency, managed transportation, fixed-wing air ambulance and disaster response and utilize two types of ambulance units: Advanced Life Support and Basic Life Support. Envision Healthcare Holdings was founded in February 2011 and is headquartered in Greenwood Village, CO.

EmCare, Inc. operates as a physician practice management company, that provides outsourced facility-based physician services for clinicians, hospitals, health systems, and other healthcare clients in the United States. The firm offers integrating clinical services; emergency medicine services; and hospital medicine services, including 24/7 hospitalist coverage, help hospitals manage their purchasing programs, lengths of stay management, daily inpatient care management, discharge care coordination with providers, recruit/retain physicians, physician leadership training/education, post-discharge follow-up, access to intensivists, coding and billing services, and customizing financial and staffing models, as well as consultation and coverage for intensive care, psychiatric, medical, skilled nursing, rehabilitation, surgery, OB/GYN, and other units. The company was founded in 1972 and is headquartered in Dallas, TX.

Envision Healthcare Corp. engages in the provision of healthcare services. It offers clinical solutions, home health services and ambulatory surgery solutions. The company is headquartered in Nashville, TN.