20 C.F.R. § 404.1514 : Employees' Benefits — SOCIAL SECURITY ADMINISTRATION — FEDERAL OLD-AGE, SURVIVORS AND DISABILITY INSURANCE (1950- ) — DETERMINING DISABILITY AND BLINDNESS —EVIDENCE — When we will purchase existing evidence

We need specific medical evidence to determine whether you are disabled or blind. You are responsible for providing that evidence. However, we will pay physicians not employed by the Federal government and other non-Federal providers of medical services for the reasonable cost of providing us with existing medical evidence that we need and ask for after November 30, 1980.