| Business | Phone |
| Concentric Research Corp 2548 S Seneca St, Wichita 67217 | (316) 267-0066 |
| Professional Research Network 345 Riverview St # 400, Wichita 67203 | (316) 838-7700 |
| Orthopedic Research Institute 929 N Saint Francis St, Wichita 67214 | (316) 268-8674 |
| Heartland Research 2020 N Tyler Rd, Wichita 67212 | (316) 462-0420 |