(a) A provider of services must provide the office with notice of any voluntary termination of any authorized service(s) and submit a termination plan at least six months prior to the voluntary termination. Such termination plan shall be submitted in a format prescribed by the office and shall include, at a minimum, a comprehensive description of clearly defined actions that will be taken to:

1. (1) assure appropriate referral of patients;
2. (2) preserve the confidentiality of patient records; and
3. (3) ensure appropriate access to patient records, financial records and other accounts.