Southern California Criminal Defense Attorney
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Testimonials Read about the types of crimes we defend. Treatment rather than incarceration More than 50 years of combined courtroom experience.
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History of M’Naghten Rule
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Treatment vs. Jail
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Pre-filing Mental Health
Restoration of Sanity
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Sexually Violent Predators
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Firm Overview

Lessem & Newstat, LLP is Southern California's leading full service law firm, and we are dedicated to providing winning legal defense to those in need. With more than 50 years of combined courtroom experience, an d hundreds of jury trials to our name, there is virtually no case that is out of reach when it comes to defending and protecting the rights and freedoms of those accused in Southern California. Jeremy Lessem, one of our attorneys, is certified by the State Bar of California Board of Legal Specialization. This has been achieved by less than one percent of attorneys in California. As a criminal law specialist, his dedication to criminal defense is a reflection of his personal devotion to constantly becoming a more knowledgeable and experienced legal advocate.

Our team of mental health lawyers, Jeremy Lessem, Joshua Newstat, and Mark Lessem, has built a law firm predicated on the belief that accused individuals are innocent until proven guilty. As such, we are committed to doing e verything in our power to making sure that others in the legal field see it the same way. Being arrested and accused of any type of criminal offense can be a frightening experience; add to the mix that your mental health may have played a part in the allegations brought against you, and the situation can become even more overwhelming. For this reason, our team is ready to represent individuals in need of strong, aggressive criminal defense as it pertains to one's mental health.

About Us

With over 50 years of combined experience to our name and a slew of accolades that include a preeminent Martindale-Hubbell AV rating, a Better Business Bureau A+ rating, we are more than capable of taking on the most difficult cases. We have taken more than 200 cases to trial; therefore, we are always ready to put our trial skills to work . Whether your case involves a sanity hearing or it must be taken to a mental health court such as Department 95 or the Ventura Mental Health Court, we are prepared to provide legal support and guidance throughout the entire process.

A solid strategy will need to be built in your defense, and there is no better firm to turn to for effective defense skills than Lessem& Newstat, LLP. We know that this is an overwhelming time for our clients, so we go above and beyond in order to ensure that you are kept fully informed at every step of the way. Mental health cases involving criminal defense, defining insanity, NGI, sexually violent predators, and more can be complicated procedures of which you will need to be kept up-to-date at all times. We have carried this philosophy into all areas of our practice, including keeping you informed about Murphy Conservatorships, mental health disability rights, and the restoration of sanity.

Many lines of defense exist that we can employ on your behalf. For example, pulling from the history of the M'Naghten Rule or exploring treament vs. jail options could be used in your favor during a courtroom trial or out of court settlement. We are prepared to tackle cases of any nature, from the most complex to the most minor. You can confidently turn to us for help and information regarding the pre-filing of mental health cases, crisis consultations, and any other questions that may arise as you proceed through your legal journey.

Southern California Mental Health Lawyer

The seriousness with which California judges, prosecutors, and jury members apply to criminal cases involving mental health questioning can be tough. Therefore, you need to ensure that you secure equally tough legal representation to help protect the rights and freedoms that are at risk when you are criminally accused. Choosing to align yourself with a Southern California mental health lawyer from our firm could greatly benefit the outcome of your case, as we have successfully obtained hundreds of dismissals and reduced sentences.

Contact a Southern California mental health attorney today to schedule a free consultation regarding your case.

We understand that residents throughout Southern California are at risk of being criminally accused. Therefore, we have extended our mental health defense services to areas throughout Los Angeles, Santa Barbara, Ventura, Van Nuys, Orange County, and the San Fernando Valley.


Los Angeles Office
3450 Cahuenga Blvd, Unit 102
Los Angeles, CA 90068

Ventura Office
770 County Square Drive
Suite 103
Ventura, CA 93003

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