Other services that an agency of this capacity may extend include the assessment and the thorough check for budget payments. This means that the responsibility of checking out an individual's financial capacity to pay in increments can fall on medical billing agencies and their workers. Contact through phone calls is also a usual service that they have for the hospital or clinic that they represent. In these phone calls, billers may help resubmit claims or try to correct mistakes made when filling up forms and other paperwork.