1. Directory assistance: maintaining reliable provider directories for health plan shoppers Author(s): Manatt, Phelps & Phillips. Manatt Health Solutions, author. Publication: [Oakland, Calif.] : California HealthCare Foundation, September 2015 Subject(s): Data Collection -- standardsDirectories as TopicHealth Insurance Exchanges -- legislation & jurisprudenceHealth Insurance Exchanges -- standardsHealth Manpower -- legislation & jurisprudenceQuality Assurance, Health CareContract ServicesDecision MakingInsurance Coverage -- legislation & jurisprudenceMedicaidMedicareState GovernmentHumansUnited StatesUnited States.