Oakstone Psychiatric Practice

Welcome to Oakstone Psychiatric Practice

"Rooted in Compassion. Grounded in Expertise."

Delivering comprehensive, evidence-based psychiatric care across all stages of life—adults, adolescents, and children—as well as interventional treatments including our dedicated REMS-certified Spravato® (esketamine) clinic in Visalia.

Oakstone Psychiatric Practice Team
Our Dedicated Team

Providing compassionate, patient-centered care in a serene and welcoming environment.

Meet Clinical Team
Our Philosophy & Care Principles

Rooted in Compassion.
Grounded in Expertise.

Founded by a board-certified psychiatrist who has cared for patients and families throughout Visalia and California's Central Valley for more than a decade, Oakstone Psychiatric Practice combines academic expertise with personalized, compassionate care.

At Oakstone Psychiatric Practice, we believe exceptional psychiatric care begins with clinical excellence, thoughtful relationships, and an unwavering commitment to doing what is right for every patient.

Oakstone Psychiatric Practice Emblem
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Integrity • Compassion • Excellence

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EVIDENCE-BASED MEDICINE

Our treatment recommendations are grounded in the latest psychiatric research, established clinical guidelines, and years of physician expertise.

PERSONALIZED CARE

Every treatment plan is thoughtfully tailored to the individual, recognizing that exceptional outcomes begin with understanding each patient's unique circumstances.

COMPREHENSIVE CARE

From childhood through adulthood, we provide coordinated psychiatric services, partnering with families and primary care physicians for whole-person health.

CERTIFIED REMS

SPRAVATO® THERAPY

An FDA-approved esketamine nasal spray administered under medical supervision for treatment-resistant depression, offering renewed hope through rapid relief.

EXPLORE SPRAVATO
Expert Clinical Leadership

Our Co-founders

Our board-certified specialists and experienced clinical staff work collaboratively to provide empathetic, high-quality care across all ages.

Cory Daniel Jaques, M.D.
Medical Director & Co-founder

Cory Daniel Jaques, M.D.

Board-Certified Adult, Child & Adolescent Psychiatrist

Dr. Cory Daniel Jaques is the co-founder and Medical Director of Oakstone Psychiatric Practice, where he leads a team of dedicated psychiatric clinicians committed to delivering exceptional, evidence-based mental health care throughout Visalia and California's Central Valley.

After earning his medical degree from the University of Minnesota Medical School, Dr. Jaques completed both his General Psychiatry Residency and Child & Adolescent Psychiatry Fellowship at the UCLA Semel Institute for Neuroscience and Human Behavior, one of the nation's leading centers for psychiatric education and research.

For more than a decade, Dr. Jaques has provided psychiatric care to children, adolescents, and adults across the Central Valley. In addition to leading Oakstone Psychiatric Practice, he oversees our certified REMS Spravato® clinic, providing relief for patients experiencing treatment-resistant depression.

April Ortiz, PMHNP-BC
Co-founder

April Ortiz, PMHNP-BC

Board-Certified Psychiatric Mental Health Nurse Practitioner

April Ortiz is a co-founder and board-certified Psychiatric Mental Health Nurse Practitioner at Oakstone Psychiatric Practice with many years of experience providing compassionate, evidence-based psychiatric care across Visalia and the Central Valley.

At Oakstone, April provides comprehensive psychiatric evaluations, medication management, and individualized treatment across the lifespan for adults, adolescents, and children experiencing a wide range of mental health conditions.

Working closely with Dr. Cory Daniel Jaques, April practices within the clinical philosophy that defines Oakstone: delivering personalized, ethical, and evidence-based psychiatric care with professionalism, compassion, and respect.

Clinical & Administrative Team

Our supportive care team is dedicated to providing warm, professional, and seamless support at every stage of your care.

STAFF
Clinical Staff

Board-Certified Psychiatric-Mental Health Practitioners

Our specialized clinical practitioners provide patient-first psychiatric assessments, personalized follow-ups, and collaborative mental wellness support in close partnership with our co-founders.

Flor Santoyo
Flor Santoyo

Certified Medical Assistant, Office Manager & Patient Care Specialist

Flor Santoyo serves as Office Manager, Certified Medical Assistant, and Patient Care Specialist at Oakstone Psychiatric Practice. With her extensive clinical support background and exceptional organizational leadership, Flor ensures that every patient and family receives a seamless, warm, and supportive experience from their very first interaction.

Visit Our Office

Location

3435 South Demaree Ave, Ste C
Visalia, CA 93277

Get Directions →

Phone & Fax

Phone: (559) 258-1644
Fax: (559) 258-1624

Office Hours

Monday – Friday: 8:00 AM – 5:00 PM
Saturday – Sunday: Closed

Oakstone Psychiatry Logo Oakstone Practice Front Window Graphic and Brick Facade
Direct Clinical Scheduling

Request Information & Appointments

Ready to take the next step? To request an initial psychiatric evaluation, schedule an appointment, or ask questions regarding insurance coverage and care plans, please call our Visalia office directly.

Our care coordination team is available Monday through Friday to personally assist you, explain what to expect, and schedule your appointment.

Visalia Office

Direct Care Team

Accepting Patients

Phone Inquiries & Scheduling

(559) 258-1644

Physician Referrals & Fax

(559) 258-1624

Office Hours

Monday – Friday: 8:00 AM – 5:00 PM

Saturday & Sunday: Closed

Location

3435 South Demaree Ave, Ste C, Visalia, CA 93277

Confidential & Physician-Directed

Covered by most major commercial health insurance plans and Medicare. Please have your insurance card ready when calling to expedite benefits verification.