Our Legal Team

Meet Our 
Experienced Team

Yakima Law knows that a team is not made up of one individual. Our success is due to the tireless effort of our brilliant staff. When you are surrounded by the best, it’s hard not to achieve the best.

Brooke Barnes

Managing Partner

Having had personal experience growing up as a child in a divided home, Brooke brings an essential element of understanding and compassion to Family Law. Her passion is helping people not only walk through the landmines inherent with legal actions, but to actually thrive in the process. No battle is too massive and she is not intimidated by any adversary and will handle legal cases with the utmost honesty and integrity, using her gifts of research, investigation and persuasive speech to dismantle any inequities against her clients. Brooke has the gift of making even her enemies live at peace with her as she has incorporated the adage of drawing more flies with honey than vinegar a part of her life.

Brooke makes you feel like the only person in the room, even if you are in a crowd of hundreds. Her calm, confident demeanor will embolden and soothe clients immersed in anxiety causing situations. If you have concerns about your case, she will always take the time to talk to you and give you an honest assessment of where things stand. She is here to listen, provide advice, and fight for you. She has never…

met an opponent she hasn’t felt comfortable standing up to. Prior to coming to Ashby Law, Brooke defended over a thousand criminal cases. She has argued motions and gone to trial several times, garnering positive outcomes in the proceedings. Brooke transitioned to helping families because she finds it fulfilling to empower those facing family crises.

Brooke was born and raised in Central Washington. In her free time, she enjoys spending time with her husband and daughter as well as their two dogs. One of her favorite activities is going to breweries where she can sit outside and listen to music while laughing with her husband and friends.

David Therrien-Power


My name is David Therrien-Power and I am happy to provide civil and criminal litigation services and representation to the Yakima Valley and surrounding communities.  As a member of Yakima Law, PLLC, I strive to work with our growing team to engage with our community and assist our clients with a variety of legal needs.  As a former prosecutor and defense attorney, I have appeared on hundreds of felony and misdemeanor criminal cases.  I know that you and your family face a litany of tough decisions as you face prosecution and I am here to provide advice, support, and zealous representation to ensure that your rights are protected as you navigate the dauting prosect of being accused of criminal conduct.  I have also expanded my practice to include assistance with civil litigation and have represented clients in anti-harassment and protection orders, real estate disputes, contract disputes, business disputes, probate, personal injury, adult guardianship and employment disputes. 

I believe that a direct, fair, and firm approach to disputes and lawsuits can bring good results to clients.  I also am happy to provide assistance with contract review, estate planning, and business formation  for those clients that need help but are not currently invloved in litigation.  Careful planning can help protect you, your property, and your business should you face a lawsuit in the future.  Please contact me if I can help you in anyway.  I look forward to assisting you.

8.0David Michael Therrien-Power

Jodi Mumford


Jodi (Felton) Mumford was born and raised in Yakima. She is a graduated of Eisenhower High School, Washington State University, and the University of Idaho College of Law. Jodi has practiced law in Yakima since 2009, focusing mainly on immigration law. In her immigration law practice, Jodi has experience handling a variety of immigration cases including: Adjustment of Status to Legal Resident, Citizenship & Naturalization, Immigrant Visas Abroad, U Visas, V Visas, K-1 Fiancé Visas, DACA, and Deportation/Removal defense.

Jodi likes the personal aspect of immigration law very much. Meeting new people every day with different backgrounds and experiences and being able to help them navigate the confusing and ever-changing immigration laws whether it be in immigration court when facing deportation or helping her clients to obtain citizenship, legal residence, or permission to work in the United States. Seeing a client obtain their first legal resident card, take the oath to become a United States citizen, or simply witnessing a hug between spouses or a parent and child who no longer have to worry about losing a family member to deportation are the best parts of her job.

Outside the office Jodi enjoys spending time with her husband and two young daughters. Jodi loves to spend time outdoors especially in the summer and can often be found boating on Lake Roosevelt. Some of her other interests include reading, working out, attending sporting events, and enjoying many of the local wineries and breweries the Yakima Valley has to offer.

8.2Jodi Kay Mumford

Nieves Negrete


Nieves Negrete has advocated for clients in various areas of law: immigration, worker, immigrant and women’s rights, discrimination and now, family law. She is always looking to expand her knowledge in the area of law but, more importantly, on how to assist our clients deal with the emotional and difficult issues they are experiencing. She fervently believes that family is what really matters and she strives to help the parties remain amicable at the end of a trying event in their lives.

She is a past board member of the Access to Justice Board and several non-profit organizations. She is the very proud mother of two sons, Charles and Timothy. She enjoys spending time with her sons, friends, reading and enjoying life.

Claudia Zepeda


Claudia was born and raised in Yakima, WA where she attended and graduated from Davis High School. She then went on to attend Perry Technical College and graduated from the Legal Assistant/ Paralegal program in 2013. Claudia has been involved in Immigration law for 6 years and continues to grow in her craft. Claudia previously worked with Jodi Mumford, our Immigration Attorney, for 6 years before her and her husband moved to the Tri-Cities. While in the Tri-Cities, Claudia continued her work in the legal community where she flourished and sharpened her skills.  In 2021 her family decided to relocate back to the Yakima area to continue raising and growing their family. Claudia joined Yakima Law, PLLC in the immigration department under her previous mentor, Jodi Mumford.

Martina Cortes


Martina was born and raised in the heart of wine country. Martina has been in the legal field since 2006.  She began working with dependency and immigration cases before taking a small break to work in education. She returned back into the legal field doing what she enjoys most.  Her focus is criminal, civil and probate cases all over the Yakima County. She is also one of the most conscientious, hardworking paralegals and is always pleasant, professional, responsible, dedicated and greets everyone with a smile. Martina enjoys being actively involved in her community and with her family and friends.

Stephanie Santana


Stephanie Santana is a paralegal for both Family Law and Criminal and works under Brooke Barnes. She was born and raised in the Yakima Valley and graduated high school from Ritzville, Washington in the top 10 of her class. She went on to pursue a nursing degree from Wenatchee Valley College on a Softball scholarship and then transferred back to the Yakima Valley to help her Grandparents on their fruit farm. She attended Yakima Valley Community College and entered the Surgical Tech program when she met her husband and then shortly after, had their first daughter. She was given an opportunity to work in the legal field in criminal law under Kip Kendrick where she learned all about DUI’s in Washington State. She got her first taste of Family Law when she was offered employment with Tonilynn Savage and that is how her family law journey began.


Stephanie has 3 beautiful children, and a Husky and has been with her husband since 2007. She is a recently retired All Star Cheerleading coach from littles age 4 up to Seniors aged 18. Her oldest daughter is a 13 time National Cheer Champion, her son is a soccer star and her youngest is a brand rep model for a company out of Texas so as you can tell, she is quite busy. Stephanie loves to travel, craft, the Seahawks and tacos!