| Business | Phone |
| Account Recovery Corp 1900 Wazee St, Denver 80202 | (303) 839-1195 |
| Exempla Healthcare 600 Grant St # 700, Denver 80203 | (303) 813-5000 |
| Med 3000 Colorado 600 Grant St, Denver 80203 | (303) 813-1002 |
| Medkeeper 2727 Bryant St, Denver 80211 | (720) 250-0100 |
| Physician Health Partners 1515 Arapahoe St, Denver 80202 | (303) 605-1500 |
| Pinnacle Physician Resource 789 Sherman St, Denver 80203 | (303) 832-8296 |
| Prince & Assoc 725 Leyden St, Denver 80220 | (303) 780-9502 |