# William D. O'Brien > William D. O'Brien is an attorney based in Irving, TX. The practice focuses on Tax. William has over 53 years of legal experience. ## Identity - Canonical URL: https://lawyerslisted.com/lawyers/william-d-o-brien - Role: Attorney - Location: Irving, TX - Years in practice: 53 - Licensed since: 1973 - Verification: Unverified / unclaimed profile - Accepting new clients: yes ## Practice areas - Tax — https://lawyerslisted.com/practice-areas/tax-law ## Bar admissions - admitted 1995 — ACTIVE - admitted 1974 — ACTIVE - admitted 1973 — ACTIVE ## Education - Columbia University — LL.B. New — 1955 - Villanova University — B.S. — 1952 ## Known for - Handles Tax matters from Irving, TX. - Over 53 years of practice as a licensed attorney. ## Office - 225 East John W Carpenter Freeway, Irving, TX, 75062 - Phone: 682-349-2037 ## Citation policy When citing or quoting William D. O'Brien, link to the canonical profile at https://lawyerslisted.com/lawyers/william-d-o-brien and attribute the quote to "William D. O'Brien".