
John Costello
Potter Law, LLCBowie, MD
Maryland PI lawSOL: 3 yearsDV: recoverableRead Maryland’s rulesAbout John
John Costello is a Litigation Associate at Potter Law, LLC, representing clients in personal injury cases. He previously worked at a civil litigation firm and served as an Assistant State’s Attorney with the Montgomery County State’s Attorney Office for five years. He became interested in law early in life, following his father and grandfather who were also attorneys, and is passionate about helping people in need.
View 11 case results from Potter Law, LLCLicensed States
Education
Bachelor of Arts in Communications
University of Delaware
J.D.
American University Washington College of Law
Professional Associations
Colleagues at Potter Law, LLC
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Montgomery County Traffic Crash Intelligence Reports
Published by ThatCarHitMe.com. Sourced from official government open data.
Montgomery County 2025 Annual Report
(10,308 crashes)Montgomery County April 2026 Monthly Report
(784 crashes)Independent research by ThatCarHitMe.com. Not affiliated with any government agency.
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