Dr. Tribble possesses more than 25 years of specialized experience in the field of mental health. Since 2006, he has provided evaluation and treatment within the workers’ compensation system, becoming a qualified medical evaluator in 2011. His extensive practice encompasses thousands of medical-legal assessments and the authorship of hundreds of Panel Qualified Medical Evaluation (PQME) reports. He has served as a court-appointed independent medical evaluator, agreed medical evaluator, and as an expert witness in civil litigation matters. Additionally, Dr. Tribble has collaborated with psychiatrists to co-author psychiatric PQMEs and has delivered medical-legal rebuttals to PQME findings.

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Dr. Tribble’s breadth of assessments also includes work for the Forensic Services Division, Board of Parole Hearings Mentally Disordered Offender Program, malingering evaluations for the Department of Corrections and Rehabilitation, and IQ and memory testing for the Employment Development Department to assess occupational impairment for state disability considerations.

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His clinical approach adheres to the American College of Occupational and Environmental Medicine's guidelines for work-focused cognitive behavioral therapy, as well as the latest evidence-based practices from the Work-Focused Unified Protocol. Dr. Tribble predominantly treats firefighters, law enforcement officers, and correctional staff, while also serving professionals from diverse sectors within workers’ compensation. His service area spans Los Angeles, Orange County, San Diego, San Francisco, Riverside, Bakersfield, and Fresno. He has provided care for the Department of Corrections, which involved mental health triage and crisis bed services, along with private sector work treating military personnel and their families. Presently, Dr. Tribble contracts with Ascellus in workers’ compensation and has previously contracted with Genesis Psychology Group, Eval Docs, and Southland Spine and Rehabilitation.

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Dr. Tribble is recognized for his thoughtful and introspective demeanor, as evidenced by cognitive behavioral assessments highlighting his analytical strengths. He approaches his responsibilities with patience, consistency, and perseverance, maintaining composure and professionalism under demanding circumstances. Clients frequently commend his approachable manner and direct communication style, valuing his sincerity and factual approach.