Manufacturers
- Medical Indicators, Inc.
- Medicom, Inc.
- MediPurpose
- MediVena
- Medtronic/Minimally Invasive Therapies (MIT)
- Medtronic/Minimally Invasive Therapies Group
- Merck & Co.
- Metrex Research Corporation
- MHC Medical Products, LLC
- Micro-Scientific Industries, Inc.
- Micro-Scientific, USA
- MicroCare, LLC
- Microflex Corporation
- MJM International Corp.
- Molnlycke Health Care US, LLC
- Mortara Instrument, Inc.
- Mortara Instrument, Inc. - SEE Welch Allyn
- Mueller Sports Medicine, Inc.
- Myco Medical
- Mydent
- Mylan Pharmaceuticals, Inc.
- National Distribution & Contracting
- NDC, Inc.
- ndd Medical Technologies
- Nestle Healthcare Nutrition