Reported / Citable
Background
Joel Praneet Siam was charged following a 2022 Newport Beach incident. He had a history that included a 2020 San Diego offense in which, in the midst of what appeared to be a psychotic episode, he struck a taxi driver with a skateboard, jumped out of the moving cab, and was later found naked in a hotel elevator. A 2021 evaluation by Dr. Robert Kelin diagnosed Siam with paranoid schizophrenia.
Siam moved for pretrial mental-health diversion under Penal Code section 1001.36, which allows a court to divert eligible defendants whose charged offense was related to a qualifying mental disorder, provided various suitability criteria are met. The qualifying mental disorder requirement was uncontested. The trial court denied diversion, finding (1) Siam’s symptoms would not respond to treatment and (2) Siam would pose an unreasonable risk of danger to public safety if treated in the community.
Siam petitioned for writ relief.
The Court’s Holding
The Court of Appeal granted the writ in part. On the responsiveness-to-treatment criterion, the trial court applied the wrong legal standard by effectively overriding the unrebutted opinion of the only qualified mental-health expert who weighed in on the issue. Section 1001.36 does not authorize trial courts to substitute their lay judgments for the considered opinion of a qualified mental-health professional. The court should have credited the expert’s opinion absent substantial reasons to discredit it.
On the risk-of-danger criterion, the court held the trial court relied on factual findings unsupported by substantial evidence and that the remaining evidence was legally insufficient to establish that Siam would pose an unreasonable risk if treated in the community. Generic concerns about the defendant’s behavior or the seriousness of the underlying conduct, without specific indicators tied to community-treatment failure, do not satisfy the statutory standard.
Because the trial court did not address the two remaining suitability criteria and expressly declined to exercise its residual discretion to deny diversion even if Siam were eligible and suitable, the panel directed the trial court to vacate its denial and reconsider the motion under the correct standards.
Key Takeaways
- Trial courts evaluating mental-health diversion under section 1001.36 must give appropriate weight to qualified mental-health experts’ opinions and may not substitute lay judgment without substantial countervailing evidence.
- Findings of unreasonable risk of danger to public safety must be supported by specific facts in the record, not by generalized concerns or the seriousness of the charged conduct.
- Where a trial court denies diversion based on incomplete or erroneous findings on certain criteria, writ relief and remand for reconsideration are appropriate.
- Defense counsel should ensure the diversion motion has expert support across all suitability criteria and should anticipate residual-discretion arguments.
- Prosecutors opposing diversion should marshal specific evidence relevant to community-treatment risk rather than relying on the offense’s seriousness.
Why It Matters
This decision is important guidance on the operation of California’s pretrial mental-health diversion statute, which has expanded significantly since its enactment. The Fourth District’s published opinion makes clear that trial courts must follow a structured analytical framework, give due weight to expert opinions, and ground their dangerousness findings in concrete record evidence. Trial-court denials that rely on subjective impressions or that override unrebutted expert opinions are vulnerable to writ review.
For criminal defense counsel representing clients with serious mental illness, the case is a useful tool to challenge denials of diversion. For prosecutors and trial courts, it is a procedural roadmap for evaluating diversion motions in a way that will withstand appellate scrutiny. The decision also reinforces California’s policy preference for treating mentally ill defendants in the community when statutory criteria are met.