title: Commentary on the spread of new payment models.
authors.affiliation: Department of Health Care Policy, Harvard Medical School, 180 Longwood Avenue, Boston, MA 02115, USA. Electronic address: Chernew@hcp.med.harvard.edu.
authors.forename: Michael E
authors.initials: ME
authors.lastname: Chernew
authors.affiliation: Department of Health Care Policy, Harvard Medical School, 180 Longwood Avenue, Boston, MA 02115, USA.
authors.forename: Johan S
authors.initials: JS
authors.lastname: Hong
keywords: Health economics; Payment model innovation