David T. Grinbergs

Team Health, Inc. provides emergency department administrative and staffing services. It offers hospital based clinical outsourcing in different departments including anesthesia and hospital medicine, in addition to emergency medicine. The firm has patient centric model of healthcare delivery with hospitals and physician groups. The company was founded by H. Lynn Massingale and Randal Dabbs in 1979 and is headquartered in Knoxville, TN.

Low-T Centers, Inc. provides testosterone replacement therapy for men. Its physicians diagnose and treat men with low testosterone. The company was founded by Michael Sisk and David Samadi in 2009 and is headquartered in Southlake, TX.

Team Health Holdings, Inc. is a leading physician practice committed to quality and safety. Founded in 1979 by H. Lynn Massingale and Robert E. Sweeney, the company is headquartered in Knoxville, TN and has subsidiaries in Cayman Islands and United States. The company empowers clinicians to act on what they believe is right, invests in learning and development to promote growth in the clinical field, and fosters an environment where continuous improvement is a shared priority. With over 15,000 affiliated healthcare professionals and advanced practice clinicians, TeamHealth offers a wide range of medical solutions to more than 2,700 acute and post-acute facilities and physician groups nationwide, including emergency medicine, hospital medicine, critical care, anesthesiology, orthopedic surgery, general surgery, obstetrics, acute behavioral health, post-acute care, post-acute behavioral health, ambulatory care, virtual care, and medical call center solutions. The CEO is Leif M. Murphy.