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The law firm of Koonz, McKenney, Johnson & DePaolis, LLP represents clients from Virginia, Maryland, and the District of Columbia in all aspects of personal injury litigation. For over 25 years our attorneys have protected the rights of workers and have spoken for the victims harmed by substandard medical care, defective products, and unsafe work places. We represent people who have been injured in auto accidents, construction site accidents, as a result of medical negligence, and through exposure to harmful substances such as asbestos, silica, lead paint, or defective products. Our attorneys are at the top of their profession and offer unparalleled legal representation. We have easily accessible offices in Virginia, Maryland, and D.C.

The founding partners, Joseph H. Koonz, Jr., Carolyn McKenney, and Roger C. Johnson began this firm in 1979 with a shared goal of aggressively defending the rights of individuals. We have founded a law firm dedicated to representing injured people, one client at a time. In keeping with this goal, we do not represent insurance companies or corporate clients. Rather, we exclusively represent individuals who have been injured through no fault of their own, including those entitled to workers' compensation or Social Security Disability benefits.

Koonz, McKenney, Johnson & DePaolis LLP provides our clients with the highest level of competent, personalized legal representation available in the Washington, D.C. metropolitan area. Each Maryland, Virginia and Washington DC personal injury lawyer at our firm has developed the knowledge, resources, and contacts to handle large, complex cases without losing the personalized commitment of a small, hometown law firm.

Koonz, McKenney, Johnson & DePaolis LLP has offices in Fairfax, Virginia, Greenbelt, Maryland, and the District of Columbia. Our work in the courts of all three jurisdictions has established our attorneys as aggressive representatives of our injured clients. We are, first and foremost, a firm of trial lawyers who vigorously pursue claims of injured people in the local and federal courts in all three jurisdictions.

The attorneys of Koonz, McKenney, Johnson & DePaolis LLP pride themselves on making our community a safer place to live and raise our children through our aggressive representation of injured people. Through our efforts, we have protected consumers from future injuries by forcing corporations to change the design of defective products and to alter harmful conduct. As a result, we believe we have made our community a better place for everyone.

To learn more about our law firm, contact us today.


Koonz McKenney Johnson & DePaolis LLP is metro ranked in 2 practice areas. Best Law Firms rankings are based on a rigorous evaluation process.

Read how Best Law Firms ranks firms

Metro Rankings

Washington, D.C., VA
Tier 1 for Personal Injury Litigation - Plaintiffs
Tier 3 for Appellate Practice


Metro Rankings

Washington, D.C., VA
Tier 1 for Personal Injury Litigation - Plaintiffs
Tier 3 for Appellate Practice

Practice Areas

The below are areas of legal specialty volunteered by the firm and do not designate a specialty in which a Best Law Firms ranking is held.
  • Appellate Practice
  • Personal Injury Litigation - Plaintiffs

Individuals Recognized in The Best Lawyers in America®

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Main Location

Washington, DC
2001 Pennsylvania Avenue, NW, Suite 530
Washington, DC 20006
United States
202-796-3287 Call our Washington, DC location at 202-796-3287 Get Directions Get directions to our Washington, DC location

Office Locations

Fairfax, VA
WillowWood Plaza, Suite 200
10300 Eaton Place
Fairfax, VA 22030
United States
703-844-4598 Call our Fairfax, VA location at 703-844-4598 Get Directions Get directions to our Fairfax, VA location
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