(a) Upon refusal to issue or renew a certificate, the commissioner shall notify the applicant of the denial and of the applicant’s right to request a hearing within ten days from the date of receipt of the notice of denial.

(b) If the applicant requests a hearing within such ten days, the commissioner shall give notice of the grounds for the commissioner’s refusal and shall conduct a hearing concerning such refusal in accordance with the provisions of chapter 54 concerning contested cases.

(c) If the commissioner’s denial of a certificate is sustained after such hearing, an applicant may make a new application not less than one year after the date on which such denial was sustained.