| Business | Phone |
| Express Biotech Intl Inc 5 Hillcrest Dr # B201, Frederick 21703 | (301) 228-2444 |
| Frederick Imaging Ctr 46 Thomas Johnson Dr, Frederick 21702 | (301) 696-1410 |
| Laboratory Corp Of America 110 Baughmans Ln, Frederick 21702 | (301) 360-9830 |
| Laboratory Corp Of America 141 Thomas Johnson Dr, Frederick 21702 | (301) 695-5278 |
| Quest Diagnostics Inc 1560 Opossumtown Pike, Frederick 21702 | (301) 662-9298 |
| Quest Diagnostics Inc 184 Thomas Johnson Dr, Frederick 21702 | (301) 682-4277 |
| Quest Diagnostics Inc 915 Toll House Ave # 203, Frederick 21701 | (301) 696-0764 |