Recently researchers have suggested a multidimensional and focused approach towards competitiveness investigations in tourism. There is lack of such adaptive methodical approaches for the sanatoria segment of tourist market despite the great role of the latter in the tourism industry of the post-Soviet countries. This paper addresses the appropriate methodical approach to investigate the sanatoria segment competitiveness. Specifics of the basic forms of competition typical for tourist industry have been analyzed for the health and wellness tourism. Process approaches to the definition of sanatoria segment competitiveness have been presented in the article. System of specific economic and managerial processes and sub-processes qualifies characteristics for the subject of inquiry.