Expert Witness & Defense Service Provider Directory

Extensive experience with PC 1368 competency evaluations. Strong track record with PC 1001.36 mental health diversion petitions. Reports typically delivered within 2-3 weeks. For PC 1001.36, the treating provider can often serve as expert witness.

Specializes in neuropsychological testing to identify TBI, cognitive deficits, and developmental delays. Comprehensive battery includes WAIS-IV, Trail Making, Wisconsin Card Sorting. Experienced in testifying about how neurocognitive impairments affect criminal culpability.

Specializes in trauma-informed evaluations for individuals with histories of abuse, DV, combat, and community violence. Experienced with battered person syndrome defense (Evidence Code 1107). Culturally responsive assessments available.

Evaluations addressing how substance use disorders affected behavior at the time of the offense. Expert testimony on pharmacological effects, withdrawal states, and involuntary intoxication. Useful for Prop 36 (PC 1210) eligibility and drug diversion cases.

Comprehensive evaluations for intellectual disability (Atkins v. Virginia compliance for capital cases), autism spectrum disorder, and fetal alcohol spectrum disorders. Strong expertise with Regional Center records review. Experienced in explaining how developmental disabilities mitigate culpability.

Defense-side risk assessments challenging prosecution experts in sex offense cases. Experienced with Static-99R, STABLE-2007, and other actuarial tools. SVP (Sexually Violent Predator) defense evaluations. Also handles SORNA compliance and Jessica's Law (PC 3003.5) residency restriction challenges.

Full-service mitigation team with former social workers and trained mitigation specialists. Comprehensive biopsychosocial assessments, genograms, ACE score documentation, and visual life timelines. Experienced with capital, LWOP, three strikes, and serious felony sentencing. Typically 40-80 hours for serious felony mitigation package.

Specializes in preparing sentencing memoranda and reentry plans. Strong relationships with community-based organizations for placement. Experienced presenting at sentencing hearings. Former paralegals with specialized mitigation training from National Mitigation Investigation Standards.

Expert records collection and analysis including CPS/child welfare, school, medical, mental health, substance abuse treatment, military, and incarceration records. Skilled at locating and interviewing family members, teachers, coaches, and other collateral witnesses. Multilingual staff.

Specialized in capital and LWOP mitigation with experience on over 50 serious felony cases. Also experienced with PC 1172.6 (formerly PC 1170.95) resentencing petitions where mitigation evidence is critical. ABA Guidelines-compliant mitigation investigations. Team includes former social workers with MSW degrees.

Develops restorative justice components for sentencing packages. Coordinates victim-offender dialogues when appropriate. Creates community accountability plans. Particularly effective in juvenile transfer cases and young adult sentencing (PC 3051 youth offender parole eligibility).

Full-service defense investigation firm. Licensed PI (BPC section 7512 verified). Experienced with witness location and interviews, crime scene documentation and measurements, video canvass and surveillance footage preservation. Rush availability for time-sensitive witness interviews. Bilingual investigators on staff.

Specializes in deep background investigations on prosecution witnesses. Thorough records research including social media, court records, property records, and prior statements. Experienced at developing impeachment material. Licensed and bonded. Former law enforcement with 15+ years criminal defense investigation.

Specializes in digital evidence investigation for criminal defense. Cell phone extraction and analysis, social media preservation and authentication, GPS and cell tower location data, computer forensics. Experienced with Cellebrite, Axiom, and EnCase tools. Can challenge prosecution digital evidence methodology.

Specializes in DUI and vehicular offense investigation. Breath/blood test procedure review, field sobriety test analysis, dash cam and body cam footage review. Accident scene reconstruction coordination. Strong network of expert referrals for specialized needs. Licensed PI with DUI defense specialization.

Bilingual investigators specializing in Spanish-speaking communities. Culturally competent witness interviews and community canvass. Experienced with cases involving undocumented witnesses who fear law enforcement contact. Can coordinate with immigration attorneys on crimmigration cases. Licensed and bonded.

Independent DNA expert for defense-side review of prosecution DNA evidence. Specializes in challenging mixture interpretation, low-copy-number analysis, and probabilistic genotyping (STRmix, TrueAllele). Can reanalyze raw data. Experienced with CODIS database issues and genetic genealogy (investigative genetic genealogy/IGG) challenges.

Forensic toxicology experts for DUI, drug-related offenses, and poisoning cases. Retrograde extrapolation analysis, blood draw procedure review, lab methodology challenges. Can testify on drug effects, tolerance, impairment thresholds, and pharmacokinetics. Review of prosecution toxicology lab procedures and chain of custody.

Defense firearms expert challenging prosecution ballistics evidence. Independent examination of firearms, bullet comparison, cartridge case analysis, and gunshot residue (GSR). Experienced challenging AFTE methodology and error rates per PCAST report. Distance determination and shooting reconstruction. Court-qualified expert in state and federal courts.

Comprehensive digital forensics for criminal defense. Computer and mobile device analysis, cloud storage recovery, deleted data reconstruction, metadata analysis, and internet history examination. Can challenge prosecution's digital evidence handling and chain of custody. Experienced with encryption, dark web, and cryptocurrency cases.

Accident reconstruction for vehicular manslaughter, hit-and-run, DUI with injury, and reckless driving cases. Speed determination from physical evidence, visibility and perception-reaction time analysis, vehicle dynamics, EDR (Event Data Recorder/black box) download and analysis. 3D scene mapping with drone and LiDAR technology.

Independent forensic pathology review for homicide and death cases. Reviews autopsy reports, toxicology findings, wound patterns, and cause/manner of death determinations. Can challenge coroner conclusions. Experienced with shaken baby syndrome/abusive head trauma defense, asphyxiation cases, and in-custody death investigations.

Court-certified Spanish interpreters for attorney-client privileged communications, witness interviews, and document translation. Available for jail visits, office consultations, and in-court support beyond what the court provides. Experienced with legal terminology in criminal defense contexts. Half-day and full-day rates available.

Certified interpreters for Mandarin, Cantonese, and Vietnamese. Essential for confidential defense communications with Asian-language-speaking clients. Cultural competency training ensures accurate interpretation of culturally specific concepts. Available for jail visits, depositions, and trial support.

Tagalog and Ilocano interpreters serving the large Filipino community in the Bay Area. Court-certified for legal proceedings. Cultural mediation services to help attorneys understand cultural context relevant to the case. Experienced with immigration-related criminal cases in the Filipino community.

Certified ASL interpreters specializing in legal settings. ADA compliance advocacy for deaf and hard-of-hearing defendants. Experienced with Certified Deaf Interpreter (CDI) teams for complex communication needs. Can advise on appropriate accommodations for jail visits, court appearances, and attorney consultations.

Certified interpreters for Arabic (multiple dialects), Farsi, and Dari. Cultural consulting services to help attorneys understand cultural norms and context. Experienced with asylum-related criminal cases, honor-based defenses, and cases involving Middle Eastern and North African communities. Document translation for foreign records.

County hospital with comprehensive behavioral health services. John George Psychiatric Hospital for acute stabilization. Outpatient mental health clinics throughout Alameda County. Substance abuse treatment programs including MAT (medication-assisted treatment). Useful for PC 1001.36 diversion treatment plans. Treatment records can support mitigation.

San Francisco's primary psychiatric emergency facility. PES (Psychiatric Emergency Services) for 5150 holds and crisis intervention. Outpatient behavioral health referrals through SF Department of Public Health. Dual diagnosis treatment programs. Key resource for establishing treatment history for diversion and mitigation purposes.

Nationally recognized residential program for substance abuse, ex-offenders, and homeless individuals. Self-supporting community model with vocational training in restaurant, moving, bookkeeping, and other trades. Minimum 2-year commitment. Excellent reputation with judges. Can be powerful component of sentencing alternative proposals.

6-month residential rehabilitation program with work therapy component. No cost to participants. Accepts referrals from defense attorneys and courts. Structured environment with substance abuse counseling, life skills training, and work therapy. Can accommodate court-ordered treatment. Multiple Bay Area locations.

Santa Clara County's primary public hospital behavioral health program. Outpatient mental health services, crisis stabilization, and substance abuse treatment. Strong forensic mental health program including IST (incompetent to stand trial) restoration services. Treatment enrollment demonstrates engagement for PC 1001.36 diversion petitions.

Specializes in advising defense counsel on immigration consequences of criminal dispositions per Padilla v. Kentucky and PC 1016.3. Analysis of deportability, inadmissibility, and relief eligibility for proposed plea agreements. Post-conviction relief including PC 1473.7 motions (vacating convictions based on immigration prejudice). Consultation available for conflict panel attorneys.

Immigration defense specialists focusing on removal defense for non-citizen defendants. Expertise with DACA and TPS holders facing criminal charges. Asylum-based defenses for refugees. Coordination with criminal defense counsel on immigration-safe dispositions. Free initial consultations for conflict panel attorneys on 987.9 funded cases.

Specializes in ICE detainer challenges and sanctuary city policies. U-Visa applications for crime victims who are also defendants. T-Visa for trafficking victims. Special Immigrant Juvenile Status (SIJS) for juvenile defendants. Experienced with Santa Clara County immigration policies and coordination with county counsel.

Serves the agricultural worker community in Marin and Sonoma counties. Experienced with indigenous language speakers from Mexico and Central America. Crimmigration consultation for defense attorneys handling cases with agricultural worker defendants. Family unity arguments for sentencing mitigation. Interpretation services for Mixteco, Zapoteco, and other indigenous languages available through partner organizations.

National evidence-based reentry program providing immediate transitional employment, job readiness training, and permanent job placement. Participants start work within days of enrollment. Strong track record of reducing recidivism. Letters of enrollment and participation can strengthen sentencing mitigation packages and reentry plans.

Comprehensive reentry services including housing assistance, financial coaching, career development, and community building. Serves East Contra Costa and Alameda counties. Strong track record with formerly incarcerated individuals. Enrollment letters and program completion certificates valuable for mitigation and reentry plans.

Accredited charter school providing education inside jails and in community settings. GED/HiSET preparation, college courses, vocational training, and restorative justice programming. Active in SF County Jail, Santa Rita Jail (Alameda), and community locations. Educational enrollment demonstrates rehabilitation commitment for sentencing. Strong partnerships with community colleges.

Innovative reentry organization using restorative justice circles and arts-based programming. ROOTS (Restoring Our Original True Selves) program serves young adults in custody. Community Conferencing program for restorative justice alternatives. Active in Alameda and San Francisco counties. Programming inside juvenile hall and county jails. Powerful letters of support for sentencing.

Community health center specializing in serving formerly incarcerated individuals and communities impacted by the criminal justice system. Primary care, behavioral health, substance abuse treatment, and peer navigation services. Reentry health coordinators assist with Medi-Cal enrollment, medication continuity, and health-related social needs. Enrollment demonstrates rehabilitation commitment.