... WASHINGTON, DC, THERE ARE TWO OFFICES THAT YOU MAY CONTACT Office of Size Standards U.S Small Business Administration 409 3rd Street, SW Washington, DC 20416 Tel: (202) 205-6618 Office of Contracting ... 621111 Specialists) 621112 Offices of Physicians, Mental Health Specialists 621210 Offices of Dentists 621310 Offices of Chiropractors 621320 Offices of Optometrists Offices of Mental Health Practitioners ... employee designated as a Size Specialist Below are the office addresses and telephone numbers Area I Office of Government Contracting Boston Area Office U.S Small Business Administration 10 Causeway...