The Aspen Group's new chief human resources officer and three other dental leadership moves since Jan. 24:
1. Dental software company Planet DDS named Matt Walker its first chief customer officer.
2. New Hyde Park, N.Y.-based DSO Dental365 promoted Chase Drossos from controller to vice president of finance.
3. Nader Nadershahi, DDS, dean of the University of the Pacific Arthur A. Dugoni School of Dentistry in San Francisco, was selected to serve on California's Health Workforce Education and Training Council.
4. The Aspen Group, based in Chicago, appointed Jeri Doris chief human resources officer.