| Business | Phone |
| Medical Ops Management Inc 7200 E Hampden Ave # 103, Denver 80224 | (303) 394-2531 |
| Multum Information Svc Inc 3200 Cherry Creek South Dr, Denver 80209 | (303) 733-4447 |
| Physicians Reimbursement Systs 1675 Larimer St # 410, Denver 80202 | (303) 534-0574 |