| Business | Phone |
| Allergy & Asthma Ctr Inc 18946 Bonanza Way, Gaithersburg 20879 | (301) 527-8711 |
| Surgi-Vision 20 Firstfield Rd, Gaithersburg 20878 | (301) 527-2000 |
| Metropolitan Medical Supplies 7003 Cypress Hill Dr, Gaithersburg 20879 | (301) 977-5100 |
| Harrington Limited 7517 Rickenbacker Dr, Gaithersburg 20879 | (301) 977-4500 |
| Health Depot 8532 Dakota Dr, Gaithersburg 20877 | (301) 926-7192 |
| Lawson Medical Supply 431 N Frederick Ave, Gaithersburg 20877 | (301) 948-7887 |
| Jessa Medical 112 Market St, Gaithersburg 20878 | (301) 990-8706 |