| Business | Phone |
| Audiology & Hearing Research 3800 Reservoir Rd Nw, Washington 20007 | (202) 687-5176 |
| Audiphone Washington Co Inc 818 18th St Nw # 520, Washington 20006 | (202) 466-4270 |
| George Washington Univ Speech 2201 G St Nw, Washington 20037 | (202) 994-7360 |
| Hearing Aids Radioear 916 19 Nw, Washington 20015 | (202) 541-4557 |
| National Campaign For Hearing 1225 I St Nw # 500, Washington 20005 | (202) 289-5850 |
| Professional Hearing Aid Svc 2141 K St Nw, Washington 20037 | (202) 785-8704 |
| Spring Valley Hearing Ctr 4910 Massachusetts Ave Nw # 29, Washington 20016 | (202) 362-4300 |
| Washington Hearing & Speech 5255 Loughboro Rd Nw, Washington 20016 | (202) 537-4010 |