Meet Our Clinical Team
Dedicated professionals committed to providing compassionate, evidence-based mental health care in a supportive environment.
Dr. Warren Russell Taff, MD
Medical Director
Board-certified physician with decades of experience in behavioral healthcare. Dr. Taff oversees medical operations, medication management, and patient safety at Lumen Mental Harmony, bringing evidence-based clinical oversight to every aspect of our mental health treatment programs.
License: California Physician and Surgeon License
License #: A29577
Originally Issued: 09/18/1975
Expiration: 04/30/2027
Denis Gabriel Tamas, PMHNP
Psychiatric Mental Health Nurse Practitioner
Specializing in psychiatric assessments, medication management, and mental health stabilization, Denis works within our integrated behavioral healthcare team to support individuals across all levels of care — from PHP through outpatient services.
License: Psychiatric / Mental Health Nurse Practitioner
License #: 95016586
Originally Issued: 02/02/2021
Expiration: 06/30/2027
Houman Nikgohar, LMFT
Clinical Director
Licensed Marriage and Family Therapist leading our clinical programming and therapeutic services. Houman's expertise spans trauma-informed care, dual diagnosis treatment, family systems therapy, and individualized treatment planning designed to support lasting mental health and emotional wellness.
License: Licensed Marriage and Family Therapist
License #: LMFT95068
Expiration: 08/31/2026
Experience Our Facility
Our Glendale office provides a warm, professional, and welcoming clinical environment designed to support healing and growth.
