Address 275 Battery Street
Suite 1600
San Francisco, CA 94111

Phone 415.288.9800
Fax 415.288.9801
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Practice Areas

Medical Malpractice Defense

Medical and Nursing Board Matters

General Civil Litigation


University of San Francisco School of Law, J.D.

University of California, Berkeley, B.A. Double Major, Political Science and Mass Communications

The Branson School

Bar Admissions


Mr. Willoughby is an experienced trial attorney who, since joining Hassard Bonnington in 1997, has dedicated his legal career to the representation of health care providers in a variety of contexts, primarily the defense of medical negligence lawsuits involving complex medical issues.

Mr. Willoughby is also very experienced in handling matters before the California Medical Board and California Nursing Board, premises liability claims and hospital staff issues.

Mr. Willoughby is a native San Franciscan who moved to Marin County with his family at the age of 7. While in the 8th grade at Ross School, he won several awards and commendations for rescuing two elderly residents from a burning home next to the school.

After graduating high school from The Branson School, Mr. Willoughby attended the University of California Berkeley, where he double majored in political science and mass communications.

The son of a respected journalist and press secretary, Mr. Willoughby initially worked in local and national politics for four years before deciding to attend law school at the University of San Francisco School of Law. While at USF Law, he won a Best Oral Argument award and served as a judicial extern to Justice Timothy A. Reardon at the California Court of Appeal.

Upon passing the bar in 1997, Mr. Willoughby joined Hassard Bonnington, where he has always considered it a great honor and privilege to represent the Bay Area’s finest medical providers. He has been a partner of the firm since 2006.

Notable Trial Experience

Kim: Defense trial verdict on behalf of university hospital in a lawsuit alleging failure to timely diagnose and treat compartment syndrome, resulting in permanent neurologic injuries; 2018.

Ghezavat: Defense trial verdict on behalf of neurologist and university hospital in four-week trial involving $41.18 million in wrongful death claims based on an alleged violation of Health & Safety Code §103900; 2018.

In the Matter of Dr. A: Represented physician through administrative trial and appeal following Medical Board’s denial of licensure, resulting in issuance of a full license with no conditions; 2015.

Simons: Dismissal of all claims during trial. Plaintiffs alleged a physician had negligently delayed completion of their family member’s death certificate, resulting in an inability to meet religious obligations; 2013.

Robbins: Defense trial verdict on behalf of pulmonologist in a claim alleging failure to monitor a patient (also a physician) taking the prescription medication Isoniazid; 2011.

Landry: Defense trial verdict on behalf of a university hospital and cardiologist in a claim alleging medical negligence and wrongful death due to a ruptured aorta sustained during a cardiac stenting procedure; 2006.