Dr. Jacob Moussai, M.D.
Dr. Moussai is an expert in the field of adult psychiatry, with an emphasis in mood disorders, depression, anxiety and adult ADHD. is board certified by the American Board of Psychiatry and Neurology. He completed his residency at Yale School of Medicine’s psychiatry program with additional training in neurobehavior and is a former Associate Professor of psychiatry at UCLA School of Medicine, Department of Psychiatry and a former Assistant Clinical Professor at USC Keck School of Medicine, Department of Psychiatry.
He was also the Medical Director of the Post Deployment Clinic at the VA Medical Center and has been featured on Fox News Channel in 2012 for his work with our returning combat veterans. He has been recognized by his peers and his patients for his outstanding work and has been voted “Top Psychiatrist” and featured in Super Doctors directory.
In addition to his clinical work, he is also actively involved with teaching medical students and psychiatry residents. Dr. Moussai is also an Independent Medical Evaluator and providers expert testimony on various psychiatric topics and is a Qualified Medical Evaluator for the state of California.
He has been recognized for seven years in a row as "Southern California Super Doctors
LLEYLA MALLAK, PMHNP
Leyla Mallak is a dedicated Psychiatric Nurse Practitioner, board-certified by the American Nurses Credentialing Center. She completed her education at Charles R. Drew University of Medicine and Science in California. Leyla holds a steadfast belief that everyone, regardless of age, gender, or background, may require support for their mental well-being at some point in their lives. She emphasizes that seeking help is a sign of strength amidst life's complexities, not a display of weakness.
Beyond her professional endeavors, Leyla enjoys spending time on the beach, going on hikes, and expressing her creativity through painting.
Melanie Jimenez, PMHNP
Melanie is a board-certified Psychiatric Mental Health Nurse Practitioner with eight years of nursing experience. She earned her Bachelor of Science in Nursing from California State University, San Marcos, and has worked as a Registered Nurse at Huntington Hospital and UCLA. Her dedication to psychiatric care emerged from personal experiences and a keen recognition of the gaps in mental health services.
Melanie obtained a Master’s degree in Nursing from Maryville University. She specializes in medication management and has extensive experience treating patients with conditions such as depression, anxiety, ADHD, PTSD, and mood disorders. She finds great fulfillment in working closely with her patients, assisting them in managing their conditions and navigating their treatment journey with confidence.
ARSHDEEP KAUR, PA-C, MSPAS
Arshdeep Kaur is a board-certified Physician Assistant with a passion for mental and physical wellness. She completed her Bacholor of Science degree in Clinical Nutrition at University of California, Davis and her Masters of Physician Assistant studies at Dominican University of California.
She believes mental health is whole-body health. Our thoughts, emotions, environment, relationships, and even what we eat all play a powerful role in how we feel and function. She takes a compassionate and holistic approach—because healing isn’t just about symptoms; it’s about understanding the full picture.
Outside of medicine, she find joy in traveling the world and immersing herself in different cultures. She enjoys hiking and being out in nature- it continuously pushes her past her limits and reminds her that growth often comes through discomfort. These experiences shape how she shows up in work—curious, open-minded, and committed to helping others navigate their own journeys with compassion and resilience.