What areas of law does Cassidy O'Sullivan practice?

Cassidy O'Sullivan focuses on Business and Litigation.

Where is Cassidy O'Sullivan located?

Cassidy O'Sullivan primarily serves clients in Los Angeles, California, with an office at 523 West Sixth Street, Suite 400.

Is Cassidy O'Sullivan a verified attorney?

Cassidy O'Sullivan's profile is listed but has not yet been claimed by the attorney. Verification status is pending.

How can I schedule a consultation with Cassidy O'Sullivan?

You can book a consultation through LawyersListed directly from this page. Initial outreach can also be made by phone at 213-788-4340.

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Cassidy O'Sullivan

Hueston Hennigan Llp

Los Angeles, CA

Trusted business attorney serving Los Angeles.

Practices in

Business Litigation

Are you Cassidy O'Sullivan?

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Quick answer

Cassidy O'Sullivan is an attorney based in Los Angeles, CALIFORNIA. The practice focuses on Business and Litigation. Currently practicing at Hueston Hennigan Llp.

Based in: Los Angeles, CALIFORNIA
Experience: attorney
Known for: Business · Litigation

Handles Business and Litigation matters from Los Angeles, CALIFORNIA.
Recognized with Best Lawyers in America — Commercial Litigation (2026).

Areas of practice

Practice focus

Cassidy O'Sullivan represents clients in Los Angeles, California across the following areas of law. Each area links to other verified attorneys with the same focus.

Biography

About Cassidy O'Sullivan

Cassidy O'Sullivan is a top attorney recognized by Best Lawyers in the practice area(s) of Commercial Litigation.

Cassidy, who practices law in Los Angeles, California, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Cassidy is held by other top lawyers in the same geographic and legal practice area.

Credentials

Education

New York University
J.D. · 2021

Recognition

Awards & honors

Best Lawyers in America — Commercial Litigation
2026

Locations

Office locations

Main office

Hueston Hennigan Llp

523 West Sixth Street, Suite 400

Los Angeles, California 90014

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Client feedback

Client reviews

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Frequently asked

Common questions

What areas of law does Cassidy O'Sullivan practice?
Cassidy O'Sullivan focuses on Business and Litigation.
Where is Cassidy O'Sullivan located?
Cassidy O'Sullivan primarily serves clients in Los Angeles, California, with an office at 523 West Sixth Street, Suite 400.
Is Cassidy O'Sullivan a verified attorney?
Cassidy O'Sullivan's profile is listed but has not yet been claimed by the attorney. Verification status is pending.
How can I schedule a consultation with Cassidy O'Sullivan?
You can book a consultation through LawyersListed directly from this page. Initial outreach can also be made by phone at 213-788-4340.