- Category
- Owen Mumford 16
- Otsuka America Pharmaceutical 1
- Ossur 109
- Osborn Medical Corporation 1
- Ortho Clinical Diagnostics 31
- Orgain Inc 14
- Orasure Technologies 6
- OP2 Labs Inc 2
- Op-D-Op 33
- Omron Healthcare 35
- Omnis Health 13
- Omnimed 6
- Olympus America Inc 1
- Okamoto USA Inc 1
- Odell Corporation 11
- Ocusoft 2
- Occunomix International 7
- Oakworks 6
- OakRidge Products 5
- O&M Halyard Inc 239
- OS Novation Systems Inc 2
- Orthozone Inc *MM* 1
- Oraline Inc 1