Hermiston, OR

Peter J. Hess

Peter J. Hess is the Managing Attorney at Hess Injury Law. He graduated from Walla Walla High School in 1996 and the University of Washington in 2000 with a B.A. in Business Administration/Information Systems. He earned his J.D. with honors from Willamette University College of Law in 2007. He joined Hess Injury Law after graduation and became a partner in 2012. He is licensed to practice law in Washington and Oregon. He is a Guardian member of the Oregon Trial Lawyers Association and an Eagle member of the Washington State Association for Justice.

Ryan J. Armentrout is a trial lawyer and partner at Hess Injury Law. He holds a BA in Philosophy from the University of Washington, a J.D. from Gonzaga Law School, and an LLM in tax law from the University of Washington (2011). He joined Hess Injury Law in 2014 as an associate attorney. He has obtained seven-figure results for injured people in Washington and Oregon. He received awards for Best Brief and first place overall in the Albert R. Mugel National Tax Moot Court Competition, and also won the Linden Cup Appellate Advocacy Competition.

Daniel J. Hess is the Founding Partner of Hess Injury Law. He graduated from Seattle Pacific College in 1972 with a B.A. in Chemistry, and from the University of Miami in 1974 with a Master’s Degree in Psychology. He earned his J.D. cum laude from Willamette University College of Law in 1981. He founded Hess Injury Law in 1998, focusing exclusively on injury claims. He is licensed to practice law in Washington and Oregon. In 2014, he was honored as a Graduate of Distinction by the Walla Walla School District for his professional accomplishments and community service.

Adrienne King is an attorney at Hess Injury Law. She has devoted over 25 years to the firm, starting as a receptionist and progressing to case manager and firm administration. She earned her BS in Business Management from Western Governors University and completed the Washington State Bar Association’s APR 6 Law Clerk Program. She passed the bar in 2025 and is dedicated to helping injured people.