20 CFR 498.110: Failure to request a hearing.

If the respondent does not request a hearing within the time prescribed by § 498.109(a), the Office of the Inspector General may seek the proposed penalty and assessment, as applicable, or any less severe penalty and assessment. The Office of the Inspector General shall notify the respondent by certified mail, return receipt requested, of any penalty and assessment, as applicable, that has been imposed and of the means by which the respondent may satisfy the amount owed.