Mario Albert Sullivan
Johnson & Sullivan, Ltd. • Chicago, IL
Debt CollectionEmployment LawEstate PlanningPersonal InjuryReal Estate
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Contact
Email
mario@johnsonsullivan.com
Phone
(312) 324-0846
Address
11 E Hubbard St Ste 702, Chicago, IL, 60611-3536, US
Professional
About
Mario Albert Sullivan is a distinguished attorney and named partner at Johnson & Sullivan, Ltd., located in the heart of Chicago, Illinois. With a comprehensive legal practice that spans Employment Law, Estate Planning, Personal Injury, and Real Estate, Mario is dedicated to providing clients with expert guidance and effective representation tailored to their unique needs. Boasting extensive experience in various legal arenas, Mario offers insightful counsel on matters including landlord/tenant disputes, creditor bankruptcy, contract law, and business formation. His multifaceted approach ensures that clients receive well-rounded legal support, whether they are navigating complex real estate transactions or planning for the future through estate planning. Beyond his legal practice, Mario actively contributes to the legal community and advocates for diversity and inclusion within the profession. He has served in multiple leadership roles, including as a Nominating Committee Representative for the American Bar Association (ABA) Young Lawyers Division and as Co-Chair of the ABA Individual Rights & Responsibilities Bullyproof Committee. His commitment to public interest law is evident through his involvement with the Public Interest Law Initiative (PILI) and various LGBTQ+ bar associations. Mario's dedication to excellence in legal service, combined with his passion for community engagement and advocacy, positions him as a trusted advisor for clients across Chicago and beyond. Whether addressing employment issues, personal injury claims, or real estate challenges, clients can rely on Mario's expertise and commitment to achieving favorable outcomes.
About Debt Collection Law
Debt collection attorneys help creditors recover outstanding debts and represent consumers facing collection actions. They navigate collection laws and procedures. Common matters include debt recovery, collection defense, fair debt collection act, garnishment.
Credentials
Education
2005 John Marshall Law School, Chicago JD - Juris Doctor 2000 Illinois State University BS - Bachelor of Science
Languages
English
Recognition & Involvement
Awards
2011 Star of the Year, American Bar Association, Young Lawyers Division 2010 Star of the Year, American Bar Association, Young Lawyers Division 2008 Star of the Quarter, American Bar Association, Young Lawyers Division 2007 Certificate of Appreciation, Chicago Bar Association
Associations
2005 - Present Lesbian and Gay Bar Association of Chicago Board Member 2003 - Present National LGBT Bar Association Ad-hoc Board Member 2002 - Present Illinois State Bar Association 2002 - Present American Bar Association 2002 - Present Chicago Bar Association
Other Debt Collection Attorneys in Chicago, IL
Updated: Jun 04, 2026