Verkkowalk in clinics and urgent care centers both provide a wide range of medical services to patients. Learn about the differences between receiving treatment at walk in. Verkkominuteclinic, the medical clinic inside select cvs/pharmacy ® stores, is the largest provider of retail health care in the united states. Our family nurse practitioners and. We provide treatments, health screenings, and vaccinations 7 days a week, as well as 24/7.