| Business | Phone |
| Synergetics Inc 3845 Corporate Centre Dr, O Fallon 63368 | (636) 329-1297 |
| Provider Plus Inc 1120 Technology Dr, O Fallon 63368 | (636) 300-3246 |
| M & P Medical Inc 7215 Picasso Dr, O Fallon 63368 | (636) 978-6405 |
| Intellamed 3801 Lloyd King Dr, O Fallon 63368 | (636) 300-3741 |
| Gateway X-Ray Llc 1015 Liberty Industrial Dr, O Fallon 63366 | (636) 978-9220 |