the effects of medical insurance and competition in the guise of free choice of physician, including observability of … physicians' market shares. Medical treatment is an example of a credence good: only the physician knows the appropriate treatment …

stylized way, we study the effects of medical insurance and competition in the guise of free choice of physician. Medical … treatment is an example of a credence good: only the physician (but not the patient) knows the appropriate treatment, and even …

We propose and test a model of the strategic interaction between public and private insurers in the physician services … decreases public beneficiaries' share of physician services by 4%, equivalent to a per capita decrease of 1%-14% in services per …