Board-certified psychiatric care for ADHD, anxiety, depression, and hormonal mood changes — looking at sleep, hormones, and metabolic health alongside medication and therapy.
Most new patients are seen within a few days.
In person in Mission Viejo, CA and by secure telehealth across California, Oregon, Washington, and Colorado.
Mental health symptoms don’t always exist in isolation. Sleep problems, hormonal changes, thyroid and iron levels, medications, medical conditions, metabolic health, trauma and stress can all influence how you feel.
We look at the full clinical picture before building your treatment plan — which may include medication, therapy, laboratory evaluation when clinically appropriate, and practical lifestyle strategies.
Mental and physical health aren’t separate. Your care shouldn’t be either.
I had an excellent experience with Merrick Sy Tsai. He was incredibly thorough during my visit, taking the time to address every concern I had without making me feel rushed. What stood out most was how patient he was; he explained everything clearly and made sure I felt comfortable with the plan we discussed. It’s rare to find a clinician who balances efficiency with such a high level of attentive care. I would highly recommend him to anyone looking for a provider who truly listens.
The psychiatric team I work with has been excellent—kind, thorough, and genuinely attentive. They take the time to ensure my medications are the right fit and make me feel heard and supported at every visit. I highly recommend their care.
In-person psychiatric visits are available at our office at 27201 Puerta Real, Suite 300, Mission Viejo, CA 92691 — a short drive from Laguna Niguel, Laguna Hills, Aliso Viejo, Lake Forest, Rancho Santa Margarita, Ladera Ranch, San Juan Capistrano and the rest of south Orange County.
Prefer to meet face to face? The office offers the same care you would get by telehealth, in person, when you want it. Based further out? Secure telehealth visits continue across California, Oregon, Washington and Colorado. Open Monday to Friday 9am–5pm and Saturday 10am–2pm — call (949) 259-5123. More about our Orange County office.
Comprehensive psychiatric evaluation, diagnosis, and medication management for ADHD, anxiety, depression, bipolar disorder, OCD, PTSD and related concerns.
Individual, couples, trauma-focused and EMDR therapy with licensed therapists, coordinated with psychiatric care when that is useful.
Care for PMDD, fertility-related mental health, pregnancy and postpartum concerns, perimenopause, menopause and hormonal mood changes.
For the sleep, weight, thyroid, iron and metabolic factors that influence mood, energy and concentration — with labs ordered and interpreted here.
At Integrative Psychiatry and Wellness, we offer both therapy and psychiatric care to support your mental health needs. Each service plays a unique role in helping you achieve emotional balance, clarity, and overall well-being.

Our therapy services focus on talk-based support to help you better understand your thoughts, emotions, and behaviors. Sessions are led by qualified therapists who help you explore patterns, improve relationships, and develop healthier coping strategies in your daily life.

Our psychiatric care is medically focused and provided by licensed psychiatric clinicians. This approach includes diagnosis, medication management, and addressing biological and clinical factors that may be affecting your mental health.
Together, these services provide a comprehensive approach to mental wellness—combining emotional support with medical expertise when needed.
Quickly check your coverage online.
Choose a time that works for you.
Choose secure telehealth or an in-person visit at our Mission Viejo office.

Licensed psychiatric care in four states. Because visits are virtual, we can see you anywhere in them — not just the major metros.
Not sure whether we’re licensed where you live? Check our FAQ or call (949) 259‑5123.
We accept select insurance plans in each state we serve, and we also offer private-pay care for clients who want faster access, more time per visit, and their choice of provider without network restrictions. Every private-pay client receives a Good Faith Estimate before their first visit — full pricing transparency, no surprises.
Most patients are able to schedule an appointment within just a few days. Our goal is to provide timely access to psychiatric care, so you don't have to wait weeks to receive the support you need.
Yes. Our providers specialize in comprehensive psychiatric evaluations and medication management when clinically appropriate. If medication is recommended, we'll work with you to create a personalized treatment plan and provide ongoing follow-up to monitor your progress.
We offer both. Our psychiatric providers handle evaluations and medication management, and our licensed therapists provide individual therapy. In many cases, care is coordinated together under one roof for a more complete and personalized treatment experience.
If you choose private-pay care, you'll receive a Good Faith Estimate before your first visit outlining expected costs — full transparency, no surprises, as required under the No Surprises Act.
Integrative Psychiatry & Wellness (IPW Health) — telehealth psychiatry for patients across California, Oregon, Washington, and Colorado, with in-person visits at our Mission Viejo, CA office.
Copyright © 2026 Integrative Psychiatry, All Rights Reserved.