About Us
Nathan H. Petersen
Nathan Petersen’s practice focuses primarily on family law, including dissolutions, custody issues, child support, modifications of parenting plans, and adoptions. He also works on dependency matters representing children who have been placed into state care by CPS, CAPTA proceedings representing individuals accused of negligent or maltreatment of a child, and guardianship proceedings. Nathan is licensed in Washington State and Texas (inactive), and previously worked defending doctors, hospitals, and other healthcare providers in medical malpractice cases. Nathan believes an attorney's role is to provide diligent representation while imparting practical counsel to his clients.
Admitted to Practice
State of Washington
State of Texas (inactive)
Education
University of Houston Law Center
Juris Doctorate
BYU
Bachelor's Degree
BYU - Idaho
Associates Degree
Affiliations, Memberships, & Leadership
Clark College Paralegal Program
Adjunct Professor - Real Estate and Property Law, Estate Planning and Probate, and Legal Research and Writing
Washington State Bar Association
Family Law Section
Clark County Bar Association - Family Law
Vice President - 2013 to 2014
Clark County Bar Association
Young Lawyer's Section
General Member
Hearsay Committee Member
Family Law Section Member
American Inns of Court
Membership Chair - 2013 to 2014
George & Donald Simpson American Inn of Court
Member
2024 Family Attorney of the Year
Ryan Rothermel
Ryan Rothermel’s role with Petersen Rothermel Law Firm is representing clients in family law matters including dissolutions, custody issues, child support, modifications of parenting plans, and adoptions. Ryan believes his role as an attorney is to provide his clients with all the information necessary to understand their legal rights in family law. Ryan focuses on providing both fair representation and open communication with his clients to keep them informed about their case at all times. Ryan’s goal is to keep the often emotional and complicated family law matters as stress free as possible while still providing zealous advocacy when necessary.
Admitted to Practice
State of Washington 
Education
Valparaiso University School of Law
Juris Doctorate
Defiance College
Bachelor's Degree
Affiliations, Memberships, & Leadership
Washington State Bar Association
Family Law Section
Clark County Bar Association
Family Law Section
Leaa Petersen
Leaa Petersen has been working in family law for nearly 15 years. Her practice includes representing clients in family law, including divorce, parenting plan modification, and child support modifications. Mrs. Petersen also works in criminal defense, including representing defendants against assault charges, driving under the influence, and theft.
She first worked for the firm in an administrative support role before becoming an attorney herself. Leaa participated in the Washington State Admission and Practice Rule 6 Law Clerk Program. Leaa practiced criminal defense in the Clark County District Court as a Rule 9 Intern with a limited license before taking the bar. This work involved multiple jury trials, resulting in numerous not guilty verdicts, and negotiating reduced sentences and charges for clients.
Leaa is a native of Washington State and grew up in the Seattle area. She attended and received her associate’s degree from Highline Community College in Des Moines, Washington. She then graduated from BYU in Provo, Utah, with an emphasis in public relations and communication. Before working with Petersen Rothermel Law Firm, Leaa worked at Breathing Systems International in Houston, Texas, as the Quality Assurance and Accounting manager. 
Admitted to Practice
State of Washington 
Education
Washington State Admission and Practice Rule 6 Law Clerk Program
Law Clerk
BYU
Bachelor’s Degree, 2005
Highline Community College
Associate’s Degree, 1999
Affiliations & Memberships
Washington State Bar Association
Washington State Notary
Samantha King
Samantha joined Petersen Rothermel as a Paralegal in 2021, and is a diligent and supportive member of the team. She initially found an interest in family law while helping someone close to her navigate the system, prompting her to pursue and achieve an Associate’s Degree in Paralegal Studies. Prior to discovering her passion in family law, she worked in customer service for ten years, and brings her experience and professionalism to the job every day.
Education
Portland Community College
AAS, Paralegal (ABA approved paralegal program)
Affiliations, Memberships, & Leadership
Washington State Notary