| Business | Phone |
| Bio Defense Research Group Inc 9250 Bendix Rd, Columbia 21045 | (410) 715-1556 |
| Center For Research On 10211 Wincopin Cir, Columbia 21044 | (410) 992-5300 |
| Dataview Research Inc 10445 Hickory Ridge Rd, Columbia 21044 | (410) 884-0828 |
| K-D Medical Inc 6935 Oakland Mills Rd # A, Columbia 21045 | (410) 290-9690 |
| Mathematica Policy Research 7161 Columbia Gateway Dr # C, Columbia 21046 | (410) 872-0240 |
| National Center-Healthy Hsng 10227 Wincopin Cir # 100, Columbia 21044 | (410) 992-0712 |