If the participant has insurance, or other coverage, or if any other person is obligated, either legally or contractually, to pay for, or to reimburse the participant for, services covered by this chapter, the provider shall seek payment from that source first. If an insurance carrier rejects the claim or pays less than the amount allowed by the Program, the provider may submit a claim to the Program. The provider shall submit a copy of the insurance carrier’s notice or remittance advice with the invoice. If payment is made by both the Program and the insurance or other source for the same service, the provider shall refund to the Department, within 60 days of receipt, the amount paid by the Program or the insurance or other source, whichever is less. The provider shall reimburse the Department for any overpayment.