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Black Onyx

Integrated Psychiatry located in Orange, South San Francisco, Los Angeles and San Diego, CA

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About Black Onyx

Adults seeking comprehensive and compassionate mental health care need look no further than Black Onyx in Orange and South San Francisco, California. Their psychiatric-mental health nurse practitioners, Peter Pham, PMHNP-BC, and Diana Bush, PMHNP-BC, focus on giving each person the individualized attention and care they deserve as they work through life challenges and overcome mental health disorders.

The Black Onyx team makes mental health care easy to obtain, offering in-office care and telemedicine. They’re also personally accessible, providing hands-on care that includes texting with patients needing intervention.

With a dedication to holistic care, the team practices integrative psychology. They treat all the facets of a patient’s life — physical, mental, emotional, behavioral, social, and environmental — contributing to their struggles. As part of their integrative psychiatry practice, the team offers services not typically found at a mental health practice, such as weight management.

The all-inclusive services at Black Onyx include psychological assessments, medication management, and psychotherapy tailored to meet each person’s needs. The team treats the full scope of mental health disorders, ranging from anxiety and depression to bipolar disorder and post-traumatic disorder (PTSD).

Peter and Diana specialize in attention-deficit/hyperactivity disorder in adults, providing medication, therapy, and support that improves each person’s ability to succeed on the job, at home, and in their relationships.

Adults needing person-centered mental health care from a team of experienced and skilled providers should connect with the team at Black Onyx. Call or use the online booking feature to learn more about the services they provide.

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Our mission

At Black Onyx, we strive to provide a safe and supportive environment where individuals can take charge of their healing journey. We will help our clients find and maintain balance in their lives by combining holistic self-care while trying to integrate a client's mental health needs. We aim to foster meaningful connections between mind, body, and spirit so our clients can find the strength and resilience to reach their fullest potential.

"Dr. Peter is awesome. He asked thorough questions and made me feel comfortable during my appointment."

Kate A.
"Peter is great! He is attentive and listens to your needs and concerns well. I’ve been very pleasantly surprised with my experience with him."

Stacey K.
"Peter is a very nice NP and he’s willing to listen to your concerns to provide his help to you. He takes the times to go through each step."

Duy T.
"Diana was down-to-earth and listened to me. She was knowledgeable and collaborative."

Jessica D.
"Diana was very friendly and knowledgeable and listened to all of my issues and answered every question. I highly recommend her!"

Laura E.
"Diana was incredible - I felt so comfortable talking to her about the issues I was having."

Michelle O.


We accept most insurance providers. If you have specific questions regarding your coverage, please contact us for additional information.

United Health Care
Self Pay

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