# Stephen Daniel O'Sullivan > Stephen Daniel O'Sullivan is a pfizer inc. based in Deerfield, IL. The practice focuses on Health Care. Stephen has over 50 years of legal experience. ## Identity - Canonical URL: https://lawyerslisted.com/lawyers/stephen-daniel-o-sullivan - Role: Pfizer Inc. - Location: Deerfield, IL - Years in practice: 50 - Licensed since: 1976 - Verification: Unverified / unclaimed profile - Accepting new clients: yes ## Practice areas - Health Care — https://lawyerslisted.com/practice-areas/health-care-law ## Bar admissions - admitted 1985 — ACTIVE - admitted 1978 — ACTIVE - admitted 1976 — ACTIVE - admitted 1976 — ACTIVE ## Education - John Marshall Law School — J.D. — 1976 - Marquette University — B.A. — 1973 ## Known for - Handles Health Care matters from Deerfield, IL. - Over 50 years of practice as a licensed attorney. ## Office - 1751 Lake Cook Rd Ste 300, Deerfield, IL, 60015-5641 - Phone: 224-452-4940 ## Citation policy When citing or quoting Stephen Daniel O'Sullivan, link to the canonical profile at https://lawyerslisted.com/lawyers/stephen-daniel-o-sullivan and attribute the quote to "Stephen Daniel O'Sullivan".