About Our Law Firm
Offices in DC, MD & VA
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 45 years, the firm has protected the rights of workers and victims harmed by carelessness, motor vehicle accidents, substandard medical care, and unsafe workplaces.
During their history, the firm has strived to protect the rights of victims by providing quality legal representation to those injured in in accidents and by harmful products and materials. Our DC, Maryland, and Virginia injury attorneys are at the top of their profession and offer unparalleled legal representation in and around the Washington metropolitan area.
About Our Legal Team
The founding partners, Joseph H. Koonz, Jr., Carolyn McKenney, and Roger C. Johnson, began the firm in 1979 with a shared goal of aggressively defending the rights of individuals. Today, a new generation of partners, led by Peter DePaolis, continue to carry the torch and build upon the firm’s great legacy. Each member of the team is 100% dedicated to representing injured people, one client at a time.
In keeping with this goal, they 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.

We are, first and foremost, a firm of trial lawyers who vigorously pursue the claims of injured people in the local and federal courts in all three jurisdictions. We also accept attorney referrals from firms and attorneys across the D.C., Maryland, and Virginia areas with injury clients needing effective representation or assistance in managing cases.
Our Washington, D.C., Virginia, and Maryland personal injury attorneys pride themselves on making our community a safer place to live and raise our children. Through our aggressive representation of injured clients, 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.