About

Casey Determan is an attorney with A&o Shearman in Washington, DC, where he focuses his practice on general practice matters. Based in the heart of the nation’s capital, Casey brings a thoughtful, detail-oriented approach to his work and is committed to helping clients navigate a wide range of legal needs with professionalism and clarity. He is admitted to practice in Washington, DC, and serves clients with the responsiveness and precision that complex legal matters demand. At A&o Shearman, Casey is known for his practical mindset and client-focused approach. He understands that every legal issue is different, and he works to provide clear guidance tailored to each client’s goals and circumstances. Whether addressing routine concerns or more nuanced legal questions, he emphasizes thorough preparation, strategic thinking, and effective communication at every stage of representation. Casey’s practice reflects a commitment to delivering dependable legal support in a fast-moving legal environment. He values building strong attorney-client relationships based on trust, accessibility, and attention to detail. Clients seeking a Washington, DC attorney with a general practice background can rely on Casey Determan for professional counsel grounded in diligence and a service-oriented approach.

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