42 CFR § 405.818 - Deadline for processing provider enrollment initial determinations.
Contractors approve or deny complete provider or supplier enrollment applications to approval or denial within the following timeframes:
(a) Initial enrollments. Contractors process new enrollment applications within 180 days of receipt.
(b) Revalidation of existing enrollments. Contractors process revalidations within 180 days of receipt.
(c) Change-of-information and reassignment of payment request. Contractors process change-of-information and reassignment of payment requests within 90 days of receipt.