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Mario H. Nguyen, Criminal Defense Attorney in Los Angeles, California

focused on Criminal Defense and White Collar

Trusted criminal defense attorney serving Los Angeles.

2
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Quick answer

Mario H. Nguyen is an attorney based in Los Angeles, CALIFORNIA. The practice focuses on Criminal Defense and White Collar. Currently practicing at Spertus, Josephs & Minnick LLP.

Based in
Los Angeles, CALIFORNIA
Experience
attorney
Known for
Criminal Defense · White Collar
  • Handles Criminal Defense and White Collar matters from Los Angeles, CALIFORNIA.
  • Recognized with Best Lawyers in America — Criminal Defense: White-Collar (2026).

About Mario H. Nguyen: Mario H. Nguyen is an attorney based in Los Angeles, CALIFORNIA. The practice focuses on Criminal Defense and White Collar. Currently practicing at Spertus, Josephs & Minnick LLP.

Areas of practice

Practice areas handled by Mario H. Nguyen

Mario concentrates on criminal defense and white collar. Each area below outlines the kind of case Mario handles, typical outcomes to expect, and how the intake process starts.

Criminal Defense cases in Los Angeles, California

Mario takes criminal defense matters in Los Angeles, California. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Mario agrees to represent you.

White Collar cases in Los Angeles, California

Mario takes white collar matters in Los Angeles, California. Typical engagements include intake calls to scope the issue, review of any records or filings you already have, and a written strategy memo before Mario agrees to represent you.

Biography

About Mario H. Nguyen — Attorney of California criminal defense experience

Mario H. Nguyen is an attorney based in Los Angeles, CALIFORNIA. The practice focuses on Criminal Defense and White Collar. Currently practicing at Spertus, Josephs & Minnick LLP.

Mario Nguyen is a skilled litigator, investigator, and legal scholar. He has over 200 hours of experience trying cases in federal court, has conducted investigations with millions of dollars at stake, and teaches at one of the top 30 law schools in the nation.

Mario served as a Trial Attorney in the Fraud Section of the U.S. Department of Justice’s Criminal Division, an inaugural judicial law clerk to a newly appointed federal trial court judge, and an associate to a former U.S. Attorney in the criminal defense and investigations department of a major global law firm.

Mario’s clients are individuals, public bodies, and companies. He helps them build compliance programs, navigate investigations, respond to subpoenas and search warrants, and litigate complex criminal and civil matters. He has handled matters before federal and state courts, grand juries, special litigation committees, and administrative agencies.

Mario’s experience spans a range of issues, including the Foreign Corrupt Practices Act (FCPA), the False Claims Act, the Travel Act, the Sherman Act, the Clayton Act, the Racketeer Influenced and Corrupt Organizations Act (RICO), the Anti-Kickback Statute, the Stark Law, healthcare fraud, conspiracy, false statement, obstruction, bribery, money laundering, forfeiture, embezzlement, bank fraud, securities fraud, mail fraud, wire fraud, tax fraud, and public corruption.

In addition to teaching as an adjunct law professor at Texas A&M University School of Law, Mario has been published by The Texas Lawbook, The Houston Chronicle, and Law360. He was named one of the Best Lawyers Under 40 and one of the Best Lawyers for White-Collar Criminal Defense by D Magazine, HuffPost’s 40 Latinos Under 40 in Foreign Policy, and the Best Informative Speaker in the U.S. by the American Forensic Association in 2012.

(Licensed in Texas and California. Posts here are not intended as legal advice or to create an attorney-client relationship.)

How Mario handles criminal defense matters

Mario Nguyen is a skilled litigator, investigator, and legal scholar. He has over 200 hours of experience trying cases in federal court, has conducted investigations with millions of dollars at stake, and teaches at one of the top 30 law schools in the nation. Mario served as a Trial Attorney in the Fraud Section of the U.S. Department of Justice’s Criminal Division, an inaugural judicial law…

Who Mario represents

Mario reviews new inquiries case-by-case for criminal defense and white collar matters in Los Angeles and the surrounding California area.

Credentials

Mario H. Nguyen's legal education and bar admissions

  • Harvard University

    J.D. · 2017

  • Western Kentucky University

    B.A. · 2012

Jurisdictions

Mario's state bar admissions

  • Texas, State Bar of

    ACTIVE

  • California, The Stat

    ACTIVE

Mario studied at J.D. in Harvard University and B.A. in Western Kentucky University.

Law school and academic background

Mario completed J.D. in Harvard University and B.A. in Western Kentucky University. Formal legal training is one signal of substantive knowledge — the day-to-day practice Mario runs in California is where that training gets applied to real client questions.

Recognition

Awards, publications, and recognition of Mario H. Nguyen

Mario has received 1 formal recognition from bar associations, industry bodies, and peer-review services.

  • Best Lawyers in America — Criminal Defense: White-Collar

    2026

Legal awards and honors

Best Lawyers in America — Criminal Defense: White-Collar (2026).

Locations

Mario H. Nguyen's office in Los Angeles

Mario's primary office is at 1990 South Bundy Drive, Suite 705, Los Angeles, California, 90025. In-person meetings are by appointment; a phone intake usually comes first.

Main office

Spertus, Josephs & Minnick LLP

1990 South Bundy Drive, Suite 705

Los Angeles, California 90025

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Client feedback

Client reviews of Mario H. Nguyen

Mario has not yet collected verified client reviews on LawyersListed. Reviews here are all from confirmed clients; anonymous ratings are moderated out.

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Hiring guide

How to hire Mario H. Nguyen — what to expect in your first consultation

Working with a new criminal defense attorney should feel structured. Here's how the first two conversations with Mario usually go, from the moment you request a consult to the day representation begins.

Consultation formats and pricing

Mario charges for the initial consult. That fee is credited toward representation if you retain Mario's office.

What to bring to your first meeting

Bring any documents you already have — police reports, medical records, filed pleadings, correspondence from an insurer, a copy of the contract at issue. If you're not sure, err on the side of bringing everything; Mario will tell you what matters and what doesn't.

Questions to ask a criminal defense attorney in Los Angeles, California

A short list to run through before you commit: How many criminal defense matters have you handled in the last year? What's your fee structure? Who else in the office will work on this? What's your realistic estimate of timeline and range of outcomes? How do I reach you between meetings?

Fees & payment

Fees, payment methods, and consultation options for Mario

Mario discusses fees during intake so the arrangement fits the matter. Contingency, hourly, and flat-fee options are all common in criminal defense practice — ask which fits.

Hourly rates, contingency fees, and flat-fee options

Every criminal defense matter is priced differently. Simple document review might be a flat fee. Injury litigation is often contingency. Complex commercial disputes usually run hourly with a retainer. Mario confirms the model in the engagement letter before any work starts.

Payment methods and payment plans

Mario's office accepts standard payment methods. Ask about payment plans if the retainer is a stretch — many criminal defense practices work with clients on structured schedules.

Frequently asked

Frequently asked questions about Mario H. Nguyen

  • How much does it cost to hire Mario for a criminal defense case?

    Cost depends on the type of matter, the fee model (contingency, flat, hourly), and how contested the case becomes. Mario walks through the likely range during the consult so there are no surprises.

  • Does Mario offer a free consultation?

    Mario charges for the initial consult; that fee is credited toward representation if you retain Mario's office. Some criminal defense attorneys offer free consults — check Mario's current terms during booking.

  • How long do criminal defense cases in California typically take?

    Simple criminal defense matters can wrap in a few weeks; disputed cases can run 6–18 months from intake to resolution, longer if the matter goes to trial. Mario gives a realistic estimate for your facts at the consult — vague answers here are a red flag.

  • Can Mario take my case if I'm outside Los Angeles?

    Mario is licensed in California. Matters governed by California law are the natural fit. Out-of-state matters are handled case-by-case, sometimes with local co-counsel. Ask during intake — Mario will tell you if the case is a fit or refer you to someone closer to your court.

  • What should I bring to my first meeting with Mario?

    Bring every document that touches the dispute: contracts, correspondence, police or medical reports, filed pleadings, invoices, photographs, insurance letters. Also bring a written timeline of what happened, in your own words. Mario will filter what matters — over-preparing at intake is always cheaper than needing a second meeting.

  • Is Mario accepting new criminal defense clients right now?

    Mario's intake status shifts week to week. Submit the form; the office will confirm availability or refer the matter out.

Areas served

Criminal Defense attorneys serving Los Angeles, San Francisco and San Diego in California

Mario handles criminal defense matters throughout California. Each city below is a direct link into the search page for verified criminal defense attorneys in that community.

More counsel

If Mario's intake is full or the fit isn't right, these criminal defense attorneys in Los Angeles handle similar matters. Every profile below is verified and open to consultations.