To identify the ways that a doctor’s office can be improved, www.onemedical.com ]One Medical[/url] founder and CEO Tom Lee, an internist, spent the early days of his primary-care practice serving in a variety of roles, from physician to accountant. He hit on a membership model that adds concierge-style services to a high-tech foundation-allowing him to cut the administrative costs of traditional care by two-thirds, he says.