We are Grant Thornton

Arlington, Virginia

  • Healthcare
  • Not-for-profit & higher education
Service Experience
  • Tax
  • Human Capital Services

Mary Torretta




Executive summary

Mary is a Tax Principal in Grant Thornton's Not-For-Profit and Healthcare Practice and is solely dedicated to tax-exempt clients. As a tax attorney, Mary is responsible for research in the legal and business consequences of tax planning strategies, tax controversy, applications for exemption, and private letter ruling requests for not-for-profit organizations.


Mary has specialized, technical experience with regards to IRS Form 990 and the compliance needs of not-for-profit and healthcare organizations. Mary provides consulting services in the areas of multi-entity structures, healthcare entity reporting needs, board governance and management, tax return positions, unrelated business taxable income, intermediate sanctions, tax-exempt bond reporting and formation of tax-exempt organizations.



Professional qualifications and memberships

  • Virginia State Bar
  • Healthcare Financial Management Assoc.
  • American Health Lawyers Association – Tax


Presentations and publications


Mary has authored numerous articles for publications such as the NonProfit Times, Taxation of Exempts and AICPA Tax Adviser. Mary is a frequent speaker and contributor for the Healthcare Financial Management Association, American Health Lawyers Association among others. 



  • Juris Doctorate from the George Mason University School of Law
  • Bachelors of Science (Accounting and Criminal Justice) from Charleston Southern University

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