title: How narrow a network is too narrow?
authors.affiliation: Department of Health Policy and Management, Harvard School of Public Health, Boston, Massachusetts.
authors.forename: Katherine
authors.initials: K
authors.lastname: Baicker
authors.affiliation: Institute for Social Research, University of Michigan, Ann Arbor.
authors.forename: Helen
authors.initials: H
authors.lastname: Levy
mesh_terms: D019058:Community Networks / Q000592:standards*; D006282:Health Personnel / Q000331:legislation & jurisprudence; D054524:Medicare Part D; D014481:United States