20 C.F.R. §§ 404.1519g–404.1519j

When, in our judgment, your medical source is qualified, equipped, and willing to perform the additional examination or test(s) for the fee schedule payment, and generally furnishes complete and timely reports, your medical source will be the preferred source for the purchased examination or test(s).

We will use a different medical source than your medical source for a purchased examination or test in situations including, but not limited to, the following:

You or your representative may object to your being examined by a medical source we have designated to perform a consultative examination. If there is a good reason for the objection, we will schedule the examination with another medical source. A good reason may be that the medical source we designated had previously represented an interest adverse to you. For example, the medical source may have represented your employer in a workers' compensation case or may have been involved in an insurance claim or legal action adverse to you. Other things we will consider include: The presence of a language barrier, the medical source's office location (e.g., 2nd floor, no elevator), travel restrictions, and whether the medical source had examined you in connection with a previous disability determination or decision that was unfavorable to you. If your objection is that a medical source allegedly “lacks objectivity” in general, but not in relation to you personally, we will review the allegations. See § 404.1519s. To avoid a delay in processing your claim, the consultative examination in your case will be changed to another medical source while a review is being conducted. We will handle any objection to use of the substitute medical source in the same manner. However, if we had previously conducted such a review and found that the reports of the medical source in question conformed to our guidelines, we will not change your examination.