Susan joined the firm in 2001 as an Articling Student, and in 2002 she returned as an Associate. Susan has been Managing Partner since 2018. Susan practices civil litigation, specializing in personal injury law, medical malpractice, and insurance law.

Frank co-founded Tierney Stauffer LLP in the early 1980s with his brother Stephen.

Frank’s practice focuses in the areas of personal injury, medical malpractice, disability claims and historical sexual assaults. He exclusively acts for plaintiffs and has successfully negotiated and settled thousands of claims arising out of serious injury or death..

Dana has been providing litigation and advocacy services since joining the firm as a partner in 1986. He has over 25 years of mediation, arbitration, trial and appellate experience. Over the course of his career, Dana has represented individuals, partnerships, small and large businesses, private and institutional lenders, chartered banks, private and publicly traded corporations, and a variety of other professionals including Real Estate Appraisers, Engineers, Mortgage Brokers and law firms.

For the last 30 years, Ian Stauffer has helped hundreds of clients who have had problems involving personal injury, insurance, employment, professional malpractice and defamation. He has worked for both plaintiffs and defendants in a wide range of civil litigation cases. He has extensive experience before civil juries. Additionally, Ian has mediated and arbitrated over 2,000 disputes.

Lesly joined the firm in 2007, as an Articling Student, where she gained experience in all areas of legal practice. Upon her Call to the Bar in June 2008, Lesly joined the firm as an Associate in the Family Law and Civil Litigation practice groups. Lesly is now a Partner at Tierney Stauffer LLP and practices in the areas of Personal Injury, Medical Malpractice, Employment, Commercial and Contract Litigation. Lesly has experience handling matters before the Superior Court of Justice, the Human Rights Tribunal and CPP Review Tribunal.


Teena joined the firm as an Associate in the Civil Litigation Practice Group in 2006. Prior to joining Tierney Stauffer LLP, Teena practiced with two other local law firms where she gained experience in family law, municipal law, personal injury, accident benefits, insurance litigation and disability claims. She practices in areas of personal injury litigation, including disability claims, commercial litigation, construction litigation, contract litigation, and insurance litigation.

Donna Robinson has over 30 years experience in the Insurance and Legal fields. She began her career as a claims examiner for The Co-operators and then worked as a litigation law clerk before entering into the independent adjusting field. As a licensed independent adjuster, she worked handling all lines of claims.

Stan has been practicing law since 2015. He articled with Tierney Stauffer before practicing for four years at a well-respected insurance defense firm. Stan now applies his knowledge of the insurance system and insurance companies towards assisting victims. Stan works with the Civil Litigation and Personal Injury Group in the Ottawa office.

Kaitlin joined Tierney Stauffer LLP as a summer student in 2017. She returned for a second summer term in 2018 and completed her articles in 2020, where she gained considerable exposure to all areas of civil litigation. After her Call to the Bar in 2020, Kaitlin rejoined the firm as an Associate in the civil litigation group.