| Business | Phone |
| Excel Research Svc 3021 W Dakota Ave # 110, Fresno 93722 | (559) 225-8183 |
| Sierra Medical Research Inc 5066 N Fresno St # 102, Fresno 93710 | (559) 229-5985 |
| Access Research & Cnsltng Inc 4720 W Jennifer Ave, Fresno 93722 | (559) 277-5272 |
| Advance Medical Research Inst 6069 N 1st St, Fresno 93710 | (559) 432-8700 |
| Paragon Research Svc 332 W Fountain Way, Fresno 93705 | (559) 227-9225 |
| Sierra Medical Research Inc 5150 N 6th St # 156, Fresno 93710 | (559) 229-5985 |