Licensed Clinical Psychologist, PSY24675

Dr. Marissa Long headshot

Marissa Long, MAOB, Psy.D.

Organizational Consultant and Trainer

Dr. Long is a Licensed Clinical Health Psychologist as well as an educated and trained Organizational Consultant/Trainer in Southern California. She offers a great deal of experience and skill combined with warmth and a genuine interest in helping people feel and do better.

Education and Training

Dr. Long received her Doctorate in Clinical Psychology at the California School of Professional Psychology in Fresno where she obtained additional education and training in the field of Health Psychology. Dr. Long went above and beyond in her training, completing hundreds of hours more than what was required. Her training covered the full scope of mental health allowing her to work with individuals, couples, and families struggling with concerns such as anxiety, depression, trauma and life stressors as well as more severe issues that require the years of education and experience that Psychologists specifically complete.

Additionally, Dr. Long earned a Master’s Degree in Organizational Behavior at the Marshall Goldsmith School of Business at Alliant University, with a focus on team building, leadership development, and program implementation.


Dr. Long has worked in the Behavioral Medicine, OBGYN, Reproductive Endocrinology, and Education departments in Kaiser of Fresno where she developed and implemented new programs, ran groups and did therapy with individuals and couples. Additionally, she has worked for the UCSF Alzheimer and Memory Center performing diagnostic testing and assessments, an in-patient hospital evaluating risk and safety, and a therapeutic weight loss program in England providing therapy and support to young adults. In private practice, Dr. Long has focused on working with adults across the life span using cognitive-behavioral techniques as a foundation but integrating a variety of evidence-based methods as they fit best with individual clients.

Areas of Specialty

Dr. Long has specialized education and training in Health Psychology including: infertility, maternal mental health, pregnancy loss, cancer, chronic pain, cardiac events, sexual dysfunction and terminal diagnoses. She received additional training in psychological assessment/testing, brief-therapeutic models, and working with college students and couples (communication, intimacy, infidelity, pre-marital, divorce, co-parenting). Dr. Long also works a great deal with issues of diversity as well as different types of grief and loss.

In Session With Dr. Long

When you meet with Dr. Long you can expect to feel comfortable and safe right from the start. She works with each client from a holistic perspective being sure to adjust her therapeutic approach to each person’s needs, cultural identity, strengths, and goals. Dr. Long’s goal is always to work with clients in the way that works best for them and to do that work efficiently and effectively so that when they are ready to leave therapy they feel confident and capable with the tools they gained and the growth they have achieved.

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IN THE NEWS – ARC Counseling & Wellness

VoyageLA logoCheck out this article about Marissa Long of ARC Counseling and Wellness in Claremont and Irvine – in VoyageLA.