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About Sullivan Law Office, PLLC

Joseph R Sullivan

Joseph R. Sullivan

Founding Attorney

Attorney Joseph Sullivan, founder of Sullivan Law Office, PLLC, provides quality legal representation for DUI/DWI clients, criminal defendants, and administrative defense matters throughout North Idaho.

Joseph Sullivan is licensed to practice in Idaho state and federal courts and the state of Washington. He received his Juris Doctor from the Gonzaga University School of Law, graduating magna cum laude in 2015.

During law school, Mr. Sullivan worked as a law clerk for the U.S. Attorney’s Office in the Eastern District of Washington where he managed the petty offense docket for Spokane, prosecuting federal governmental regulatory and criminal offenses in the magistrate court.

Prior to becoming an attorney, Mr. Sullivan was a member of law enforcement. He started his career in 2000 with the Latah County Sheriff’s Office in Moscow, Idaho, and then was hired by the Idaho State Police, serving as a Trooper, Corporal, and Detective.

Through these valuable experiences, Mr. Sullivan learned how important it is for people who have been arrested to have knowledgeable, diligent, legal counsel.

Areas of Practice

  • Criminal Defense
  • Use of Force Defense
  • DUI/DWI Defense
  • Administrative Defense


  • Gonzaga University School of Law, Spokane, Washington
    • J.D. magna cum laude – 2015
    • Honors: Law Clerk for the United States Attorney’s Office

Past Employment Positions

  • United States Attorney’s Office
  • Idaho State Police, Trooper, Corporal and Detective
  • Latah County Sheriff’s Office


Robyn L McPherson

Robyn L. McPherson


Robyn received her Juris Doctorate from the University of Idaho in December of 2017, graduating a semester early with Dean’s List honors.  During law school, Robyn interned with both the Kootenai County Public Defender and the Nez Perce County Prosecutor, where she learned how to manage cases strategically in order to achieve the best results for her clients.

Prior to becoming an attorney, Robyn gained a unique perspective of the criminal justice system when she began her career in law enforcement in 2003 as a corrections officer in the State of Idaho.  Later, Robyn worked as a 9-1-1 calltaker, dispatcher, and trainer for the Kootenai County Sheriff’s Department, where she solidified her ability to think critically and act diligently under pressure, while providing superior customer service to those in need.  Additionally, for two years, Robyn worked as a Courtroom Clerk for several Washington State Superior Court Justices, mostly in the family law department, where she gained valuable experience regarding divorce, child custody, and child protection cases.

Aside from a few years in Washington and North Dakota, Robyn has been a lifelong resident of Northern Idaho, originally from St. Maries.  Robyn’s valuable life experiences, coupled with her ability to empathize and recognize how emotionally taxing the criminal justice system is for you and your loved ones, allows Robyn to stand apart.

Areas of Practice

  • Criminal Law


Trisha L Wagner
Trisha L. Wagner
Office Manager
Trisha Wagner was born and raised in the Pacific Northwest. She attended the University of Utah on a track scholarship but returned to Coeur d’Alene to raise her family among all the beautiful lakes, rivers and mountains our area is prized for. Trisha loves the people in our community and she is currently enrolled in the North Idaho College paralegal program. Trisha understands our clients’ needs and is often the first person a new client will talk with. She is a valuable part of our office and looks forward to serving each and every client.Contact the Sullivan Law Office, PLLC, at 208-714-0890 or send an email message to discuss your DUI defense, criminal defense or family law matter in complete confidence. Initial consultations are free.