M.S.W. - Master of Social Work 
MDS - Master of Dental Surgery 
me - medical examiner 
MEd - Master of Education 
MFA - Master of Fine Arts 
MFT - Marriage and Family Therapist 
MHA - Master of Health Administration 
MHS - Master of Health Science 
MLS - Master of Library Science 
MN - Master of Nursing 
MOT - Master of Occupational Therapy 
MPH - Master of Public Health 
MPharm - Master in Pharmacy 
MPT - Master of Physical Therapy 
MRCP - Member of the Royal College of… 
MRCS - Member of the Royal College of… 
MRL - Medical Records Librarian 
MS - Master of Surgery 
MSN - Master of Science in Nursing 
MSPH - Master of Science in Public Hea… 
MSSW - Master of Science in Social Wor… 
MSurg - Master of Surgery 
MSW - Master of Social Work 
MT - Medical Technologist 
MTA - Medical Technologist Assistant 
MV - Medicas Veterinarius