title: Supplemental insurance reduces out-of-pocket costs in medicare observation services.
authors.affiliation: Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California and Veterans Affairs Greater Los Angeles Healthcare System, Los Angeles, California.
authors.forename: Brian J
authors.initials: BJ
authors.lastname: Doyle
authors.affiliation: Division of General Internal Medicine and Health Services Research, David Geffen School of Medicine at the University of California Los Angeles, Los Angeles, California and Department of Health Policy and Management, UCLA Fielding School of Public Health, Los Angeles, California.
authors.forename: Susan L
authors.initials: SL
authors.lastname: Ettner
authors.affiliation: Division of General Internal Medicine, Department of Medicine, Cedar-Sinai Medical Center, Los Angeles, California, and the RAND Corporation, Santa Monica, California.
authors.forename: Teryl K
authors.initials: TK
authors.lastname: Nuckols
mesh_terms: D003365:Costs and Cost Analysis; D005102:Health Expenditures; D006801:Humans; D019458:Insurance Coverage; D006278:Medicare; D014481:United States