714-545-5550 Monday/Friday 9am - 5pm

About Us

Pacific Neuropsychiatric Specialists was founded on a simple principle: To treat our patients like we would treat a family member, with care, compassion and understanding.

Dr. Alejandro Alva is the Chief Medical Officer and CEO of Pacific Neuropsychiatric Specialists. He founded PNS to provide the highest quality treatment in the field of psychiatry. PNS serves as a model of exemplary mental health care for children, adolescents, adults and seniors.

Dr. Alva's pioneering vision of PNS integrates the latest advances in psychoanalysis, psychology, scientific research, social and behavioral therapies, neurochemistry, psychopharmacology as well as non-pharmacological modalities (Transcranial Magnetic Stimulation) with the purpose of treating mental illness including chemical/alcohol dependence.

Dr. Gustavo Alva is the director of clinical research and he has served as a principal investigator for many years conducting investigation in a myriad of neuropsychiatric conditions; Alzheimer's and other dementias, depression, anxiety disorders, bipolar disorder and psychotic conditions as well as multiple others. As a clinician and investigator, Dr. Alva's focus is on the genetics, neuroimaging, and latest treatments available for each of these conditions, as well as aspects of ethnicity and their correlation within clinical situations.

We are proud to have participated in the development of a great majority of treatments available to patients today.

Our health care professionals include top-trained psychiatrists, psychologists, psychiatric nurse practitioners, and physician’s assistants with expertise in treating adults, children, adolescents and seniors. Our clinical team takes a collaborative and multidisciplinary approach to care. We provide excellent administrative support. We are dedicated to providing the highest quality care and continue to be at the forefront of the most current research & treatment programs available for you and your loved ones.

PNS is committed to making treatment accessible and is in-network with most insurance carriers.

PNS staff enhances the well-being of persons with mental, neuropsychiatric disorders and chemical dependence through optimal clinical care via residential care, partial hospitalization programs, intensive outpatient programs and outpatient services, if a more intense approach is needed, we have an ample net of inpatient referrals. PNS treats people who suffer from a wide array of cognitive, behavioral, emotional and chemical dependence/Alcohol disorders. PNS strives to deliver the highest standard of mental health care available to our patients anywhere.

Dr. Alva and associates continue to be at the forefront of the most current research and treatment programs available for you or your loved ones.
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Attention New Patients

The New Patient Packet will provide what you need to get started. To download the New Patient Packet click on the link below

download packet Descargar paquete en español
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Yvette is wonderful...

She is sharp, efficient and able to assess my needs. She will not waste your time. I never wait longer than 15 min ( max) to see her. I highly recommend her:) She also is flexible with adding and changing appointments

-Evelyn D. La Habra, CA

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Dr. Alex Alva Excellent Doctor...

Excellent doctor, very considerate to patients needs. Listens to patient and family members. From www.healthgrades.com

-Lakewood, Feb 1st 2017

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Dr. Alex Alva Great Psychiatrist...

He's a great psychiatrist and was able to get me on medications that changed my life. A God send. From www.healthgrades.com

-J.R.W Irvine, Oct 10th 2016

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Dr. Alex Alva Amazing Human...

Amazing human an angel from God! I have seen many doctors no one helped me like he did , the combination of medication and his attitude towards life is what helped me! From www.healthgrades.com

-Monterey, CA May 4th 2016

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Great administration staff - Very welcoming!

Dr. Sheena Patel was amazing at listening to what I had to say. She explained everything thoroughly and offered me an opportunity to ask any questions. I did not feel rushed whatsoever ... The office is very clean, peaceful and beautifully furnished. Plenty of cozy places to sit comfortably ...

PS it's definitely the place to go on a summer day because the air conditioning is outstanding! -KP www.google.com


-Kristina Perez

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I've been really pleased with my experience here!

Super professional, knowledgeable, and friendly doctors. Dr. Alva is my favorite--he is so caring, fun, and welcoming. I have also been with Dr. Sheena and she's nice too. I would not choose to go anywhere else! I like that they work with my medical insurance as well. So thankful. www.google.com

-Lexi Cunningham

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Never had a nicer or cleaner office...

Been going to their orange office for 2 years till they closed it. Still go here and people are extremely nice. Never had a nicer or cleaner office for this type if industry. www.google.com

Jeremy Zimmerman

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Recommended on Facebook

Because Dr. Alva is one of the best psychiatrist in OC good to his patients and people around him. He is down to earth!! www.facebook.com

Sandy Chapman

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Recommended on Facebook

Compassionate expert professionals! They care about their patients and it shows! www.facebook.com

Rigo Brueck

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Recommended on Facebook

The world needs more of their kind of professional care. People can really heal here. www.facebook.com

Luke Caleb Lamar

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They make my monthly visit something I look forward to

I've been to many psychiatrists office for my anxiety medicine and I can honestly say this is the best. Jennifer Sebastian is an amazing medical expert who truly takes the time to listen to me and understand my needs without over prescribing anything. I never feel rushed, I always feel heard and taken care of. I've been able to get off antidepressants entirely through a mixture of reducing my dose along with healthy daily habits which they have been very supportive of.

Marleny and V in the front desk are very sweet and inviting, and give the entire office and air of friendliness and warm. They make my monthly visit something I look forward to. I never have to wait very long and I truly feel well taken care of.www.yelp.com


Logan D.

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The staff show willingness to support the patients...

Good day to all. I have been a patient here for about 7 years. I am very satisfied. It is clean. There is parking. The staff show willingness to support the patients schedule and needs. The Doctors are understanding and considerate. I certainly recommend this Facility. www.yelp.com

Gary S.

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The only place we felt comfortable and cared for!

This place is amazing; to be more exact, Jennifer Sebastian is very knowledgeable. Someone very close to me has been suffering from anxiety and depression for a long period of time. We've been to different psychiatrist and medical professionals and this is the only place we felt comfortable and cared for! Jenn was very confident in her decisions made and really gave us knowledge of everything something the previous doctors didn't do. Front desk was very friendly and made us feel welcome! Looking forward to next visit, thank you PNS. www.yelp.com

Janette D.

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I am happy that the staff now represents the doctor I trust

I have been seeing Dr. Alex Alva for years and he saved my life. He is the most kind and caring Psychiatrist I have seen. When I first started seeing Dr. Alva his staff was rude and uncaring. He told me he was working on getting the right staff and I must say he has. The staff is caring and helpful. Rachel has helped me with my medication that my insurance company would not cover and they finally answer the phones. I am happy that the staff now represents the doctor I trust. www.yelp.com

Maria L.

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I am so happy i found this office

I must say that i was more than hesitant when scheduling an initial consultation. This was my first time being seen in this field, so i was very nervous. I must say, i am so happy i found this office. I didn't experience anything unusual when it comes to new patient check in. I was seen shortly after arriving and did not have to wait- which i was thankful for since i have a hectic schedule my lunch breaks are my only time to get away. I am so happy to have met dr Sebastian. She made me feel so comfortable from beginning to the very end! She was very knowledgeable and it felt so nice to be heard and get feedback to better understand what is going on and how i can be helped. Thank you! www.yelp.com

Marisa P.