- MABIS DMI Healthcare
- Mada Medical Products, Inc.
- Maico
- MBI X-Ray
- McCue Corporation, Inc.
- Medegen Medical Products
- Medex
- Mediaid Inc.
- Medical Action Industries, Inc.
- Medical Devices International
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- MediPurpose, Inc.
- Medline
- Metrex
- Micromedics
- Micro-Tech Enterprises
- Midmark/Ritter
- Milliken
- Miltex Instrument Co., Inc.
- MJM International
- M-Pact Worldwide, LLC
- Myco Medical Supplies
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