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Your Trusted Mental Health Therapy Partner in Temecula
Temecula Psychological Services is an independently operated psychotherapy practice serving Temecula and surrounding areas. Our practice specializes in providing evidence-based mental health care for adults, adolescents, and children through individual, couple, and family therapy. With over 30 years of clinical experience, Dr. Mark Diamond employs psychodynamic approaches combined with cognitive restructuring and behavioral techniques to address complex emotional challenges. Laura Lee, a licensed marriage and family therapist since 1995, utilizes brief, problem-focused cognitive behavioral therapy to help clients achieve measurable progress.

We specialize in treating depression, anxiety, post-traumatic stress, parenting difficulties, and communication issues while emphasizing crisis debriefing expertise developed through extensive field experience. Our therapeutic philosophy centers on viewing life challenges as opportunities for growth rather than obstacles. We maintain strict confidentiality and prioritize client-centered care, offering personalized treatment plans tailored to each individual's unique needs. Our commitment to professional excellence is demonstrated through continuous clinical practice improvements and community mental health education initiatives.
Services
Individual Therapy Couple Therapy Family Therapy Anxiety Treatment Depression Treatment
Highlights and features
  • We offer over 30 years of combined clinical experience in mental health therapy
  • Our therapists utilize evidence-based approaches including CBT and psychodynamic therapy
  • Specialized crisis debriefing expertise developed through field experience
  • Personalized treatment plans tailored to individual client needs
  • Proven track record helping clients with anxiety, depression, and relationship issues
Services
Individual Therapy
Our individual therapy sessions provide personalized mental health treatment for adults facing emotional challenges. Using evidence-based techniques like cognitive behavioral therapy, we help clients develop coping strategies for anxiety, depression, and life transitions. Each session focuses on creating measurable progress toward specific therapeutic goals while maintaining a supportive environment.
Couple Therapy
Couple therapy addresses relationship challenges through structured sessions focusing on communication improvement and conflict resolution. We help partners develop healthier interaction patterns while addressing specific issues like trust concerns or life transitions. Our approach emphasizes mutual understanding and collaborative problem-solving to strengthen relationships.
Family Therapy
Family therapy sessions address interpersonal dynamics and communication issues within family units. We work with families to resolve conflicts, improve understanding, and establish healthier behavioral patterns. This approach helps address challenges related to parenting, adolescent issues, and major life transitions affecting family relationships.
Anxiety Treatment
Our anxiety treatment programs combine cognitive restructuring techniques with behavioral interventions to address various anxiety disorders. We help clients identify thought patterns contributing to anxiety while developing practical coping mechanisms. Treatment focuses on reducing symptoms and improving daily functioning through structured therapeutic approaches.
Depression Treatment
Depression treatment utilizes evidence-based approaches to address persistent mood disturbances. We help clients develop strategies to manage symptoms while exploring underlying factors contributing to depression. Our approach combines behavioral activation techniques with cognitive interventions to promote emotional regulation and improved quality of life.
People
Mark D. Diamond, Ph.D
Clinical Psychologist
Dr. Diamond holds a Ph.D. in Psychology from the California School of Professional Psychology. With over 30 years of clinical experience, he specializes in psychodynamic therapy combined with cognitive-behavioral techniques. He has provided crisis intervention services nationally and maintains a direct, solution-focused approach to mental health treatment.
Laura Lee, LMFT
Licensed Marriage and Family Therapist
Laura Lee earned her Master's degree in Marriage, Family, and Child Counseling from Cal State Fullerton. With over 25 years of clinical experience, including 15 years working with families in crisis, she specializes in cognitive behavioral therapy for individuals, couples, and families facing relationship and mental health challenges.
Questions
What types of therapy do you offer?
We provide individual, couple, and family therapy using evidence-based approaches like cognitive behavioral therapy and psychodynamic techniques to address anxiety, depression, relationship issues, and life transitions.
How are your services different from other therapists?
Our therapists combine extensive clinical experience with practical, solution-focused approaches. We emphasize measurable progress and view challenges as opportunities for growth while maintaining a direct, client-centered treatment philosophy.
Do you accept insurance?
We provide services that may be covered by health insurance plans. Clients should verify mental health benefits with their provider. We do not directly bill insurance companies and do not accept Medi-Cal or Medicare.
How can I schedule an appointment?
You can schedule appointments by phone at 951-693-2486 or through our online appointment request system. We require 24-hour notice for cancellations to avoid session charges.
What are your payment options?
We accept cash and checks for payment. Credit and debit cards are not accepted. Payment is expected at the time of service, and we maintain transparent billing practices with no hidden fees.
Reviews (2)
Anjuli Kamins
Aug 31, 2020 Report
TriCare should not be paying this guy. He hurts soldiers! After 1 appointment there was concern about the taunting/ridiculing tone that the "Dr" used. It is now apparent after less than a full second session that this person values asserting their dominate alpha personality and agenda over the patient despite a lack of theraputic benefit to the individual. Specifically he was mean, unprofessional and insulted the client for their service in the armed forces and the lingering effects (PTSD). I strongly recommend seeking mental help from someone who has a more professional attitude and is interested
Derrick Montenegro
Jul 21, 2018 Report
Hes amazing and powerful. If you want help to become the best you and work with him hes great. Be ready to put in work, hear things that hurt, but come out knowing the power is in you. Very to the point and will work with you.