Walgreens is changing its growth model to add the business of Health and Wellness buying two companies I-trax Inc. and Whole Health Management which run 350 health centres at corporate offices. Pharmacies will be added to these centres. Its targeting 7600 office sites with 1000 or more employees that could use a health-care center. Its competitors CVS and Walmart are going into managing employer drug benefit programs, with Walmart's selling point being reducing costs of paying for prescriptions for employers.