Trinity Professional Group Inc. Share: Certified Public Accountants (CPA) Trinity Professional Group Inc. Visit Website 218 Meadowlark Lane Duncanville, TX 75137 (972) 773-9969 (972) 803-1515 (fax) About Map About Tax Planning/Preparation and Personal Financial Planning What's Nearby? Distance: 5 10 15 20 25 50 mi.