Meet The Ardent Guardian Team

  • Mario Pizzamiglio
    Mario Pizzamiglio, Esq., CPA, CFP®

    Mario Pizzamiglio is the founder of Ardent Guardian PC.  He’s been helping individuals and small business owners with their tax and advisory needs for over 15 years.  His primary areas of practice are tax resolution, probate administration, and advanced estate tax planning techniques.  He is admitted to practice law in Virginia.     
    He is a member of the American Academy of Attorney-CPAs, the Virginia State Bar, the American Institute of Certified Public Accountants, and the National Veteran-Owned Business Association.  When he’s not in the office, you can usually find him tinkering around on his ’69 Ford Torino, hiking with his wife and kids, or sending out “Go Army, Beat Navy” emails to all Ardent Guardian’s clients (much to Shelby’s chagrin

    President & CEO

Why Choose Ardent Guardian?

We’re cool, we’re hip, and we provide all-in-one
solutions that can help you continue to grow.


Provide You The
Help You Need

At Ardent Guardian, we have a distinct advantage thanks to our extensive experience in legal and financial matters.  We offer a diverse range of services in Northern Virginia, including estate planning and trustee services, probate administration, and tax resolution services that can give you a competitive edge.  But don’t be intimidated by the fancy titles – we’re also pretty cool.


All-In-One White
Glove Service

Having a go-to person for your estate issues, tax resolution services, and legal needs can bring a lot of value to your life. But what probably brings you even more value, is having a team that truly gives hands-on service and goes above and beyond for you. We have a small client base for a reason – so we can give maximum attention to every one of our clients.


Transparent Pricing
With Flat Monthly Fees

No surprise bills? Flat monthly fees? Are you serious?….We are. In working with Ardent Guardian, we provide you with transparent pricing and flat fees/packages across all the services we provide. Why? Because we compete on great service and the value we deliver to our clients, not hours.. Get peace of mind with our flat rate billing model.

Secure Your Financial Future Today

Secure Your
Financial Future