title: Re: Physician practice competition and prices paid by private insurers for office visits.
authors.forename: David F
authors.initials: DF
authors.lastname: Penson
mesh_terms: D004465:Economic Competition; D007349:Insurance, Health, Reimbursement / Q000706:statistics & numerical data*; D009819:Office Visits / Q000191:economics*; D010820:Physicians / Q000191:economics*; D011243:Preferred Provider Organizations / Q000191:economics*