USMD Holdings, Inc. ( NASDAQ: USMD), a physician-led integrated healthcare system, announced today that Sunbal Zafar, M.D., has joined USMD Affiliated Services. Dr. Zafar, a gastroenterologist, has been added to support the growing healthcare needs of the communities and patients across the Dallas-Fort Worth Metroplex that USMD serves. "I am pleased to welcome Dr. Zafar to USMD," said Richard Johnston, M.D., chief physician officer and executive vice president of USMD Holdings. "The addition of Dr. Zafar allows USMD to expand our gastroenterology services to even more patients, thus allowing us to continue providing exceptional care and personalized service to every patient that walks through our doors." Dr. Zafar is the second gastroenterologist to join USMD in the past year. She will practice at USMD's Arlington South Specialty Clinic, which is located in the Medical Office Building at USMD Hospital at Arlington. Dr. Zafar accepts Medicare patients, further strengthening USMD's commitment to care for and treat seniors in the DFW Metroplex. Dr. Zafar attended medical school at Jinnah Sindh Medical University, formerly Sindh Medical College. Subsequently, she completed her residency in internal medicine at Case Western Reserve University and she completed two fellowships - one in geriatric medicine at University Hospitals of Cleveland and one in gastroenterology at University of Arkansas for Medical Sciences. She has more experience caring for patients as well as experience serving as assistant professor at University of Arkansas for Medical Sciences. About USMD Holdings, Inc. USMD is a publicly held (NASDAQ: USMD), physician-led, integrated health system committed to exemplary patient care. Headquartered in Irving, Texas, USMD serves the Dallas-Fort Worth metropolitan area with more than 250 physicians and associate practitioners, and provides healthcare services to patients in just under 20 different specialties at its two hospitals, four cancer treatment centers and more than 50 physician clinics, many of which are multi-specialty. All 29 of USMD's primary care clinics have been accredited by the Patient-Centered Medical Home Program, a recognition program that is part of the National Committee for Quality Assurance. This recognition means that USMD's primary care clinics successfully display and utilize evidence-based, patient-centered processes that focus on highly coordinated patient care and long-term patient relationships. For more information about USMD, visit www.usmd.com.