A new problem has emerged with the federal government's Open Payments system, which is supposed to go live Sept. 30 and disclose payments to physicians by pharmaceutical and medical device companies. A couple weeks ago, the U.S. Centers for Medicare and Medicaid Services said it would be withholding information on one-third of the payments, citing data inconsistencies in company submissions. Now, a source familiar with the matter tells ProPublica that CMS won't disclose another batch of payments: research grants made by pharmaceutical companies to doctors through intermediaries, such as contract research organizations. In these cases, doctors apparently have not been given a chance to verify and dispute payments attributed to them, as required by law.