| 1st Class Medical | 7001 Heritage Village Plaza Ste 125 Gainesville, VA 20155 | (866) 292-5365 |
| 1st Stop Health Services Inc | 2567 Chain Bridge Rd Vienna, VA 22181-5576 | (703) 242-3507 |
| 20-20 Eyecare | Monticello Market Pl Williamsburg, VA 23188 | (757) 258-1020 |
| 3M Health Information System | 5205 Leesburg Pike Ste 400 Falls Church, VA 22041-3861 | (703) 824-7784 |
| 48th Street Physicians | 4714 Marshall Ave Newport News, VA 23607-2247 | (757) 380-8709 |
| A & L Eastern Laboratories | 7621 Whitepine Rd Richmond, VA 23237-2214 | (804) 743-9401 |
| A Advanced Eye Care | 465 N Great Neck Rd Virginia Beach, VA 23454-4064 | (757) 481-5555 |
| A Capital Women's Health Clinic | 1511 Starling Dr Richmond, VA 23229-4603 | (804) 754-1928 |
| A Caring Hand Home Health Care Services | 813 W Washington St Suffolk, VA 23434-6104 | (757) 539-9722 |
| A Kid's OT | 25969 Hartwood Dr South Riding, VA 20152-3671 | (703) 327-5084 |
| A M A R Medical | 3970 Traveler Rd Harrisonburg, VA 22801 | (540) 434-1441 |
| A Prime Medical Center | (Near Glebe Road) Arlington, VA 22201 | (703) 532-1500 |
| A Samuel Clay Jr DBA Clay Home Medical | 510 S Sycamore St Petersburg, VA 23803-5044 | (804) 861-8331 |
| A Tidewater Women''s Health Clinic Pllc | 201 73rd St Newport News, VA 23607-1644 | (757) 461-0011 |
| A-1 Performance Chiropractic | 3204 Ironbound Rd Williamsburg, VA 23188 | (757) 229-4161 |
| A-1drivers Safety Improvement | 174 Garber Ln Winchester, VA 22602-4348 | (540) 535-1082 |
| AAA Affordable Health Care | PO Box 34475 Richmond, VA 23234-0475 | (804) 275-3500 |
| AAA Mid-Atlantic | 14280 Park Meadow Dr Chantilly, VA 20151-2280 | (703) 222-4112 |
| AAA Urgent Care 24 Hours | 4600 King St Alexandria, VA 22302 | (703) 354-6665 |
| AAR Alexandria Imaging Center | 4660 Kenmore Ave Alexandria, VA 22304 | (703) 751-5055 |
| AAR Woodbridge Imaging Center | 4001 Prince William Pkwy Ste 302 Woodbridge, VA 22193 | (703) 824-3260 |
| Abbott Crtcal Care Systems Div | 1518 Main St Altavista, VA 24517-1132 | (434) 369-3100 |
| Abortion Alternatives | 3230b Duke St Alexandria, VA 22314-4521 | (703) 370-4774 |
| Abundant Health Chiropratic Center | 3165 Lee Hwy Bristol, VA 24202-5944 | (276) 669-7400 |
| Ac Echos | 5234 Stoney Branch Ct Centreville, VA 20120-1373 | (703) 830-6789 |