Kelsey-Seybold Clinic, 5001 E. Sam Houston Parkway, Pasadena, celebrated its 70th anniversary in March. The health care business opened on March 15, 1949, and has since expanded to 20 locations and a sleep center in the Greater Houston area. The clinic has 425 medical care providers who care for a half-million patients annually in more than 55 medical specialties. 713-442-7100. www.kelsey-seybold.com