A.Service of Petition. Service upon the respondent of the petition in any disciplinary or disability proceeding shall be made by personal service, by any person authorized by the chair of the board, or by mailing the petition by registered or certified mail to the primary address shown in the registration statement filed by respondent pursuant to Section 8C or other last known address.B.Service of Subpoenas. Service of investigatory subpoenas, subpoenas for attendance at hearings, subpoenas for depositions as requested by either disciplinary counsel or the respondent shall be made by personal service by the sheriff or by any person authorized by the chair of the board.C.Service of Other Papers. Service of any other papers, documents, letters, or notices required by these rules may be made upon respondent or respondent's counsel, or upon third parties. Service may be made by personal service as provided in Section 13A, registered or certified mail (return receipt requested), United States Mail, delivery to the respondent or to the respondent's counsel, by facsimile transmission to the respondent or respondent's counsel at the number designated for facsimile transmission, or by email.D.Proof of Service. When service is made by mail, delivery, facsimile transmission, or by email, a certificate shall be filed in the record of the manner in which service was made. When service is made by registered or certified mail, return receipt requested, a copy of the mailed documents and the signed return receipt shall be filed in the record as proof of service. In cases of personal service, proof of personal service shall be filed in the record.Amended April 25, 2019, effective 5/15/2019.