title: 'Mixed' billing raises questions.
authors.affiliation: mass@csrlink.net
authors.forename: W J
authors.initials: WJ
authors.lastname: Mazzocco
mesh_terms: D005245:Fee Schedules / Q000191:economics / Q000331:legislation & jurisprudence; D005607:Fraud / Q000191:economics* / Q000331:legislation & jurisprudence; D006801:Humans; D016365:Liability, Legal; D006278:Medicare / Q000191:economics* / Q000331:legislation & jurisprudence; D009722:Nurse Practitioners / Q000191:economics* / Q000331:legislation & jurisprudence; D012051:Reimbursement Mechanisms / Q000191:economics* / Q000331:legislation & jurisprudence; D014481:United States