| Business | Phone |
| Us Medical Systems Inc 2705 Bee Cave Rd, Austin 78746 | (512) 347-8800 |
| Pharmaceutical Svc Corp 107 Leland St, Austin 78704 | (512) 448-9695 |
| Apex 2201 Denton Dr, Austin 78758 | (512) 834-9855 |
| Phs 3913 Todd Ln, Austin 78744 | (512) 693-4376 |
| American Pharmaceutical Svc 9210 Cameron Rd 800, Austin 78754 | (512) 928-8282 |
| Syncor International 6448 E Highway 290, Austin 78723 | (512) 458-5286 |