sentences:  Lower-cost concierge medical business models have also been attempted, such as GreenField Health in Portland, Oregon, which charged an annual fee between $195–$695 depending on age.Another is One Medical Group, the first major low-cost concierge medical group to attempt this model in a large scale, which requests a $199 annual membership fee.Both are variants of the traditional practice of medicine or primary care most common in the United States during the twentieth century.