• Rok Sribar, PhD, has been named vice president, research and development, for Align Technology (Santa Clara, California). Sribar most recently was vice president of Symbol Technologies. Align manufactures Invisalign, a method for treating the misalignment of teeth using a series of clear, removable appliances that move teeth to a desired final position.

• Charles Johnson has been promoted from director of engineering to vice president, development engineering for Candela (Wayland, Massachusetts). Candela manufactures clinical solutions that enable physicians, surgeons and personal care practitioners to treat cosmetic and medical conditions using lasers, aesthetic laser systems and other advanced technologies.

• Robert Morocco has been named CFO of IsoTis OrthoBiologics (Lausanne, Switzerland/Irvine, California). Morocco joins IsoTis from Opus Medical, a sports medicine company recently sold to ArthroCare. IsoTis OrthoBiologics has a product portfolio of natural and synthetic bone graft substitutes, plus, it says, “several others in development.“

• Douglas Hawthorne, president and CEO of Texas Health Resources (Arlington, Texas), has been named chairman of the board of Premier, a group purchasing organization. Hawthorne succeeds Richard Umbdenstock, president and CEO of Providence Services (Spokane, Washington), who is the 2005 chairman-elect of the American Hospital Association board of trustees. Hawthorne oversees 13 acute-care hospitals, two affiliate hospitals, home health services, fitness centers, urgent care centers, psychiatric/addiction treatment facilities, extended care and long-term care facilities, senior medical centers, helicopter air ambulances and a medical research organization, among others. Premier is owned by more than 200 hospital and healthcare systems, affiliated with nearly 1,500 hospital facilities and hundreds of other healthcare sites. It has facilities in Charlotte, North Carolina; Chicago; San Diego; and Washington.