| Business | Phone |
| Ccia Compensation Consultant 3848 W Carson St, Torrance 90503 | (310) 316-4363 |
| Epic Usa 21250 Hawthorne Blvd, Torrance 90503 | (310) 792-7084 |
| Super Stage America 21250 Hawthorne Blvd, Torrance 90503 | (310) 792-7047 |
| Western Clinical Research 23441 Madison St, Torrance 90505 | (310) 378-5003 |