Medical Marketing Service, Inc. (MMS) is the leading provider of email marketing services and healthcare lists to pinpoint perfect prospects for your promotions. Founded in 1929, MMS has over 90 years experience in healthcare professional direct marketing to physicians (medical doctors, MDs, and doctors of osteopathy, DOs), physician assistants (PAs), nurse practitioners (NPs), dentists, pharmacists, and virtually every other healthcare professions using multi-channel direct marketing media with proven return on investment (ROI). MMS is the original database licensee of the American Medical Association (AMA) and the exclusive list manager of the American Academy of Physician Assistants (AAPA).