Abstract: This invention concerns a letter communication method for a healthcare provider to effectively expedite reimbursement process from a patient. The letter communication method comprises gathering a current information, categorizing the patient into a group, processing the current information, generating a processed information, producing the letter, sending the letter to the patient, and updating the current information of the patient. The various steps of the letter communication method can be repeated. The letter communication method further comprises identifying a payment method chosen by the patient, calculating a past due period, and generating the letter according to a pre-defined formula, the pre-defined formula having at least the payment method and the past due period as variables. The letter generated by the letter communication method informs the patient the current information and a future action of the healthcare provider at a future date.