title: 21st-century primary care: new physician roles need new payment models.
authors.affiliation: Greenhouse Internists PC, Philadelphia, Pennsylvania, USA.
authors.forename: Richard J
authors.initials: RJ
authors.lastname: Baron
authors.forename: Christine K
authors.initials: CK
authors.lastname: Cassel
mesh_terms: D003695:Delivery of Health Care / Q000191:economics / Q000458:organization & administration / Q000639:trends*; D004470:Economics, Medical / Q000458:organization & administration / Q000639:trends; D005194:Family Practice / Q000191:economics / Q000458:organization & administration / Q000639:trends*; D018803:Models, Economic; D017146:Models, Organizational; D010819:Physician's Role; D010821:Physicians, Family / Q000639:trends*; D011320:Primary Health Care / Q000191:economics / Q000458:organization & administration / Q000639:trends*; D012051:Reimbursement Mechanisms; D014481:United States