Score: +5 (5/0/0)
Mono County Grand Jury • 2025-2026

Mammoth Lakes Police Department Detainment and Arrest Processes

Published: July 08, 2025 22 pages
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Findings and Recommendations 2 findings

F3
The limited communication and coordination between Mono County Behavioral Health and MLPD may result in the improper handling of arrestees leading to increased risks to the officers and public. Response to F3: The Sheriff’s Office disagrees with the finding. The intent of the finding is unclear, but the gist appears to be that Mono County Behavioral Health (“Behavioral Health”) should be notifying MLPD of the health status of persons under their care. While this could be useful information for law enforcement to know, they are not entitled to this information. To notify MLPD of health status information would be an illegal release of Protected Health Information (“PHI”) prohibited by the Health Insurance Portability and Accountability Act (“HIPAA”), exposing both the County of Mono and Behavioral Health employees to civil and criminal liability. If the intent of this finding is that Behavioral Health should inform MLPD of the mental health conditions of persons residing or working in the community that MLPD may interact with, that would also be violation of HIPAA. If the intent of this finding is that arrestees with a 5150 Hold are being released from medical care without notification, that is incorrect. Someone who has been arrested for a crime, even if they meet the criteria for a 5150 Hold, would be booked into the Mono County Jail. The arrestee’s mental health condition would be assessed by Behavioral Health in the confines of the Jail prior to release. If the intent of the finding is to address that persons placed solely on a 5150 Hold are released without notification to law enforcement, those are considered temporary detentions, not criminal arrests. Because the process of a 5150 Hold is considered a health condition, any information, including discharge and/or transfer, is PHI that cannot be released under HIPAA. Implementation of F3: None. Implementation Timeline for F3: Not applicable. Mono County Sheriff’s Office Comments on Grand Jury Report 2024-2025 – Attachment A
Related Recommendations (1)
R3
The grand jury recommends that the Mono County Board of Supervisors encourage the Department of Health to provide MLPD officers training on de-escalation and assessment, similar to what they would provide their own employees, starting by January, 2026. Response to R3: If MLPD, as an independent agency from the County, requests that MCBH provide de-escalation and assessment training, MCBH may work with MLPD to deliver a training that would meet the department’s needs. Ultimately, the Commission of Peace Officer Standards and Training (“POST”) offers free trainings on crisis intervention, mental health, and de-escalation that are free to officers and catered to law enforcement. As non-law enforcement personnel, MCBH can provide insights and a training perspective that may be useful to MLPD, if they so determine that it would be valuable to the officers. Implementation of R3: MCBH can provide requested training that covers MCBH’s role and its techniques for crisis intervention and assessment, distinct from those taught by POST. Implementation Timeline for R3: As requested or directed.
F4
Due to the requirements of HIPAA Compliance, there is no mechanism for the Department of Behavioral Health to “close the loop” with MLPD after a potential 5150 hold incident is vacated. The police are not notified of the cause which hinders their ability to understand the outcomes and be better able to serve the public. Response to F4: The Sheriff’s Office agrees with the finding, but there is no remedy. Behavioral Health and Mammoth Hospital are bound by the HIPAA and cannot release PHI. This includes discharge and transfer information. Behavioral Health and Mammoth Hospital legally cannot “close the loop.” While it could be helpful to know the outcomes of 5150 Holds, law enforcement is not entitled to this information. Implementation of F4: None. Implementation Timeline for F4: Not applicable.
No recommendations for this finding

Additional Recommendations 1

These recommendations are not explicitly linked to specific findings.

Agency Responses 2

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No Responses Found 4

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County of Mono Agency
Mono County Board of Supervisors Elected County Office
Mono County Sheriff Elected County Office
Town of Mammoth Lakes Town