Jackson & Coker, a physician staffing firm, named Gary Belancik as VP of primary care. Jackson & Coker is an Alpharetta GA-based physician recruitment firm.

The National Association of Locum Tenens Organizations announced Melissa Byington was named to its board of directors. Byington is VP at the CompHealth physician staffing group.

The Judge Group, a Philadelphia-based professional staffing firm, named Eileen Lombardo as VP of recruiting operations for the Washington DC market. The company also announced that Rick Iversen and Jeffrey Livonius have been appointed to its West Coast sales team.

National Technical Systems Inc. (NASD: NTSC) appointed Donald Tringali as chairman of the board. Former Chairman and company co-founder Jack Lin will remain on the board and served as chairman emeritus. Tringali is president and CEO of Augusta Advisory Group, a business advisory firm that specializes in turnarounds, merger and acquisitions, and strategic initiatives for technology and media companies. National Technical Systems provides engineering and testing services as well as staffing.

Experienced Resources LLC named Mary Ellen Wells as VP of client development. Wells has more than 25 years of experience. Experienced Resources is based in Bloomington MN.