The National Health Educator Job Analysis 2010 was conducted to update the competencies model for entry- and advanced-level health educators. Qualitative and quantitative methods were used. Structured interviews, focus groups, and a modified Delphi technique were implemented to engage 59 health educators from diverse work settings and experience levels in a seven-step instrument development process. An online survey was then completed by 1,022 practicing health educators. Survey participants used 4-point ordinal scales to rank subcompetencies by frequency of use and importance and related knowledge items by cognitive levels based on the Revised Bloom's Taxonomy. Composite scores were calculated and subgroup comparisons conducted to validate 223 subcompetencies at entry (162), advanced-1 (42), and advanced-2 (19) levels of practice, along with 113 knowledge items. Advanced-level versus entry-level competencies and a comparison with the Competency Update Project model of 2006 are discussed. Implications and recommendations for the profession are provided. (Contains 5 tables.)