Best Immigration Law Services


Erika Portillo is a highly experienced attorney whose interest and passion in law makes her a skillful advocate on behalf of her clients.  Ms. Portillo’s knowledge and experience in immigration law and her passion for the subject has helped many foreign nationals secure immigration status and pursue their dreams in the United States.  Ms. Portillo also assists many clients, both domestic and foreign, in a mulititude of civil matters.

Ms. Portillo joined Guichard, Teng, Portillo & Garrett in 2005, and is admitted to practice in the State of California, the U.S. District Court Northern District, the U.S. Court of Appeals for the Ninth Circuit.  Ms. Portillo was admitted to practice law in Mexico in 1999. She currently focuses her practice on immigration law, civil law, and matters related to Mexican law.

The complex immigration process is often difficult to navigate. Ms. Portillo’s work as a compassionate immigration attorney is enhanced by her experience as a government attorney in Mexico. She has experience in business immigration, family immigration, and naturalization, and is able to comprehensively advise clients on the full range of immigration options and risks.

Ms. Portillo has successfully represented many clients in a wide range of civil matters such as breach of contract,personal injury, fraud and misrepresentation, business disputes and corporate and business transactions.

Born and raised in Cuernavaca, Morelos, Mexico, Ms. Portillo earned her Master of Laws in United States Legal Studies from Golden Gate University School of Law, and her J.D. from La Universidad Autonama del Estado the Morelos in Mexico.

While in Mexico, Ms. Portillo first practiced criminal law as a prosecutor in the State of Morelos, then moved on to civil law.

Ms. Portillo is a member of the American Immigration Lawyers Association, Hispanic Chamber of Commerce of Contra Costa County, Editorial Board of the Contra Costa Lawyer, Robert G. McGrath American Inn of Court, Contra Costa County Bar Association, Contra Costa County Bar Association Women’s Section, One Hundred Club, and Contra Costa County Sheriff’s Posse. Ms. Portillo is a member of the Rotary Club of Walnut Creek.  She sits on the Board of the Center for Human Development, an organization that provides mentoring programs and helps youths overcome substance abuse.  She is also the former president of the Hispanic Cancer Association, and volunteers her time promoting cancer awareness among Hispanics.

Ms. Portillo is fluent in English and Spanish.

Contra Costa Immigration Legal Services Overview


Guichard, Teng, Portillo & Garrett is a recognized leader in immigration law with a culturally and racially diverse team of professionals who have the backgrounds, experience, and talents to navigate the complexities of immigration law.

In addition to English, several Guichard, Teng, Portillo & Garrett attorneys and staff are fluent in Spanish, Mandarin, Cantonese, or Taiwanese

We represent individuals in applications for visas and permanent residency, and we represent corporations, as petitioners on behalf of their employees, with business immigration, temporary employment visas, labor certification processing, and other immigration matters.

Proactive counseling with clients is key – we communicate regularly, provide as much information as possible, and interpret the nuances of the law to empower people to make informed decisions about their immigration objectives.

We take great pride in our clients’ successes and are pleased to have assisted hundreds of individuals and families with their immigration goals and dreams for their futures.

Please contact us with questions and concerns about your immigration and naturalization objectives.

Immigration Resources


The United States Citizenship & Immigration Services provides excellent information about all matters relating to visas, permanent residency, and residency eligibility for immediate relatives. Visit

We’re happy to provide the following immigration information as downloadable PDFs:

  • Temporary visas permit you to enter the United States for a short time. Downloadable PDF »
  • A “green card” allows you official immigration status. Downloadable PDF »
  • You can become a permanent resident through a family member. Downloadable PDF »