Ex Officio Delegates include the following:
- District President from MMS District Medical Societies
- District Secretary from MMS District Medical Societies
- Each Trustee and Alternate appointed to the Board of Trustees
- Student Trustee and Alternate appointed to the Board of Trustees
- Past MMS Presidents
- MMS State Officers:
- MMS President
- MMS President-Elect
- MMS Vice President
- MMS Secretary-Treasurer
- MMS Assistant Secretary-Treasurer
- MMS Speaker of the House of Delegates
- MMS Vice-Speaker of the House of Delegates
- MMS Alliance President
- Each Designated Medical Specialty Society may appoint a delegate to the MMS HOD
- The MMS Academic Physician Section may appoint a delegate to the MMS HOD
- The MMS International Medical Graduates Section may appoint a delegate to the MMS HOD
- The MMS Medical Student Section may appoint 8 delegates to the MMS HOD
- The MMS Resident and Fellow Section may appoint 8 delegates to the MMS HOD
- The MMS Organized Medical Staff Section may appoint a delegate to the MMS HOD
- Delegates-at-large Elected by the House of Delegates - typically Deans or representatives from Massachusetts Medical Schools
- Currently appointed committee chairs of all MMS standing committees