| Business | Phone |
| Resi Research & Consulting 8000 York Rd, Towson 21252 | (410) 704-7374 |
| Car-Lene Research Inc 825 Dulaney Valley Rd, Towson 21204 | (410) 823-7900 |
| Charm City Research 100 West Rd # 111, Towson 21204 | (410) 825-4200 |
| Denied Claim Research & Rcvry 212 Washington Ave, Towson 21204 | (410) 823-8400 |
| Heartdrug Research 7600 Osler Dr # 307, Towson 21204 | (410) 847-9490 |
| Irc Llc 6701 N Charles St, Towson 21204 | (410) 337-2525 |