Calvin Tchatchoua is a Doctor of Business Administration (DBA) who specialized in Healthcare Management from Walden University (USA). He is of Cameroonian origin (Central Africa). ...ver maisCalvin Tchatchoua is a Doctor of Business Administration (DBA) who specialized in Healthcare Management from Walden University (USA). He is of Cameroonian origin (Central Africa). He also holds a Masters of Business Administration (MBA) from the University of Phoenix (USA). Before immigrating to the USA, he also earned three Master’s degrees in Physical Science, in Industrial Physics, and in Solid State Physics from the University of Lomé (Togo), which was then the University of Benin.ver menos