Doctors who commonly administer expensive drugs raised similar complaints about the proposed International Pricing Index pilot, including that it would be mandatory, would require them to collect coinsurance from patients and would administratively burden them. Cancer doctors also opposed the foreign-reference-pricing aspect of the program, but medical societies for eye doctors and rheumatologists, while complaining about the pilot, did not comment on the foreign-reference-pricing aspect. The biggest complaint among the medical societies is that the demonstration would be mandatory and...