| Business | Phone |
| Alert Services Inc 14250 N State Highway 123, San Marcos 78666 | (830) 372-3333 |
| Homestead Medical Equipment 1218 Highway 123, San Marcos 78666 | (512) 396-3372 |
| Medair 1218 Highway 123, San Marcos 78666 | (512) 396-9299 |
| Orthopedic Store 1305 Wonder World Dr 100, San Marcos 78666 | (512) 805-9383 |
| Pro-Medical 507 Roadrunner Rd, San Marcos 78666 | (512) 396-3134 |
| Lincare 2108 Hunter Rd, San Marcos 78666 | (512) 392-1596 |