| Business | Phone |
| Amgen 1011 Rancho Conejo Blvd, Newbury Park 91320 | (805) 499-6725 |
| Amgen 2300 Corporate Center Dr, Newbury Park 91320 | (805) 499-1645 |
| Baxter Bioscience 1700 Rancho Conejo Blvd, Newbury Park 91320 | (805) 498-8988 |
| Trimensa Corp 1050 Lawrence Dr, Newbury Park 91320 | (805) 499-2446 |