Tulsa Office Phone: 918.743.7821 Fax: 918.392.3382 Directions 15 West 6th Street Suite 2400 Tulsa, OK 74119 Parking instructions Parking instructions Visitor parking is available in the secured, multi-level parking garage located within the building. Find a Ryan Expert Select Practice Area Practice Areas Abandoned and Unclaimed Property Business License Tax Communications Transaction Tax Credits and Incentives Employment Tax Fuels and Excise Tax Income Tax Insurance Tax International Tax Property Tax Ryan Advocacy Ryan Software Severance Tax Tax Technology Transaction Tax Tax Compliance Value-Added Tax Go