Gisoo Zarrabi, MD
Psychiatrist | Adult Specialist

Dr. Zarrabi takes a unique and progressive approach to mental health. Treatment is personalized and research-based and draws on many treatment modalities. She considers the influence of one’s genetics, their past and on factors of one’s present to help guide her patients to a healthy future. Being trained and current with the best evidence-based medication treatment strategy she places a strong emphasis on psychotherapy as the foundation of treatment. As many psychiatric conditions have an underlying biological basis, medications can be an important component of treatment and can be very effective when used appropriately.

Dr. Zarrabi completed her undergraduate education at the University of California Irvine and graduated with Magna Cum Laude Honors.  Read more

Hadi Estakhri, MD
Psychiatrist | Addiction Specialist

Dr. Estakhri is a Harvard Trained Board Certified Adult and Addiction Psychiatrist. His practicing philosophy focuses on treating each patient as an individual with unique needs and circumstances and then following evidenced-based guidelines to create an individualized treatment plan. Dr. Estakhri believes in only a limited and careful use of medication in the treatment of psychiatric conditions, and will judiciously use the medication in certain cases where the combination is likely to be especially effective. He believes that stigma is a major barrier in addressing psychiatric disorders despite their huge impact on people’s sense of well-being. Along with a strong research background in the neurobiology of psychiatric conditions he holds a holistic view of human health and practices with a patient-centered approach to care. Read more

Shilpa Diwan MD, MPH
Psychiatrist | Geriatric Specialist

Dr. Shilpa Diwan is a Board-Certified Adult Psychiatrist and fellowship-trained in Geriatric psychiatry. She brings forth many years of clinical and research experience. In 2009 Dr. Diwan completed a Fellowship in Geriatric Psychiatry at Northwestern University in Chicago. In 2008 she completed an Adult Psychiatry Residency at State University of New York, Downstate Medical Center where she was the chief resident for research, academics, and portfolio development. 

Dr. Diwan sub-specializes in treating older adults with psychiatric conditions such as depression, anxiety, insomnia, behavioral and mood disturbances related to Alzheimer’s Disease. 

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About Harbor Psychiatry & Mental Health

We believe outstanding healthcare is delivered when we merge the science of medicine with the compassion of our hearts. We refer to this as “head and heart together,” inspiring constant improvement and lasting success.
Psychiatrists Orange County CA
Psychologists Orange County CA

Contact us

Address: 4631 Teller, Suite 100
Newport Beach CA 92660

Phone: (949) 887-7187

Email: info@harbormentalhealth.com