Co-payments are expected at time of service if required by participating insurance company. If the patient does not have insurance, full payment is due at time of service. Medicare-Medicaid-Commercial Insurance: Witter Family Medicine will submit all claims to your current insurance company. As the patient, you will be responsible for your co-pay, deductible and any non-covered service rendered. Billing is done by Healthinfo Innovations of Hastings, NE.