- Advanced Diagnostics Inc
- Aero-Dyna-Kleen Chimney Sweeps
- Aesthetic Plastic Surgery
- Aiken's Quality Cuts
- Alan J Reis MD
- Alan Landy Construction
- Alan R Silverman MD
- Albert Sciulli Plbg & Htg Co
- Alex's Flowers
- Alexandra Kreps MD
- Alexandra Kreps MD
- Ali Baba Restaurant
- Aliquippa Construction LTD
- All Occasion Limousine
- Allan Wolfson MD
- Allegheny Cnty Health Fee
- Allegheny County Dist Justice
- Allegheny County Health Dept
- Allegheny County Health Dept
- Allegheny County Labs Dept
- Allegheny Forensics Assn
- Allegheny Sexually Transmitted
