IMMIGRATION ATTORNEY PROFILE
Mariella Del Pilar Diaz
Immigration Attorney in Cerritos, California
Wilner & O'Reilly, APLCCerritos, CA
Accepting New Clients
Mariella serves as an associate attorney at Wilner & O’Reilly in the Boise office, holding admission to practice law in Idaho and before the U.S. Court of Appeals for the Ninth Circuit. Her academic journey includes a bachelor’s in international business with a finance minor from Boise State University and a Juris Doctor degree…
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About the Attorney
Mariella serves as an associate attorney at Wilner & O’Reilly in the Boise office, holding admission to practice law in Idaho and before the U.S. Court of Appeals for the Ninth Circuit. Her academic journey includes a bachelor’s in international business with a finance minor from Boise State University and a Juris Doctor degree from the University of Idaho College of Law, where she consistently earned a place on the Dean’s List of Honors.
With an extensive background in various facets of immigration law, Mariella adeptly navigates deportation defense, immigration bonds, adjustment of status, naturalization, consular processing,…
Read the full biography
U-visas, VAWA, DACA, and waivers of inadmissibility. Emphasizing the importance of preparation and a comprehensive understanding of clients' challenges, she is dedicated to delivering optimal legal representation.
Mariella's commitment extends beyond the legal realm; driven by a passion for community service, she volunteers for the Idaho Volunteer Lawyers Program during her free time. As a native of Peru, she possesses a unique perspective on the additional challenges foreign individuals face within our intricate legal system.
In her leisure hours, Mariella enjoys exploring Idaho's scenic trails with her family through activities such as mountain biking, paddling, snowboarding, hiking, and camping. Fluent in Spanish, she brings a multilingual dimension to her practice.
Languages
Practice Areas
Immigration Matters Handled
- Broad immigration law practice covering a range of family, employment, humanitarian and citizenship matters.
Education / Credentials / Memberships
Education
- —, University of Idaho College of Law J.D.
- —, Boise State University B.A. International Business
Credentials
- Admitted to practice in Idaho (2020)
Memberships
- Idaho State Bar Idaho Supreme Court American Immigration Lawyers Association (AILA) U
- S
- Court of Appeals for the Ninth Circuit
Office & Service Areas
Wilner & O'Reilly, APLC
17777 Center Court Drive, Suite 200, Cerritos, CA 90703
Serving clients in Cerritos and throughout California.
Consultation & Fees Overview
Consultations are available to discuss your immigration goals, review your situation, and outline potential options. Fees and representation details are discussed during the consultation and may vary based on the type and complexity of your case.
- Consultation options are shared on request.
- Fees discussed during the consultation
- Engagement terms and scope of representation provided in writing
Helpful Immigration Guides & Related Resources
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Profile updated Nov 2, 2026. Source: imported listing.