Psychiatrist

Dereck Curtis Wei, MD

2940 Inland Empire Blvd, Ontario, California, 91764-4898

About Dereck Curtis Wei

Dereck Curtis Wei is a psychiatrist based in Ontario, California who is specialized in Psychiatry. Active license number of Dereck Curtis Wei is A190956 for Psychiatry in California. His current practice location is 2940 Inland Empire Blvd, Ontario. Patients can contact him at 909-458-1350. Dereck Curtis Wei, MD, specializes in Psychiatry and his NPI number (Unique professional ID assigned by NPPES) is 1720720105.

Dereck Curtis Wei specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

Practice Information

Dereck Curtis Wei's specialty, credentials, practice address, contact phone number and fax are as below. Patients can call on the below given phone number for appointment.

Provider Name Dereck Curtis Wei
Specialization Psychiatry
Credentials MD
Gender Male
Practice Address: 2940 Inland Empire Blvd,
Ontario, CA - 91764-4898

Professional Identification Codes

NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to healthcare providers in the United States by the Centers for Medicare and Medicaid Services (CMS). NPI details are as mentioned below.

NPI Number1720720105
NPI Enumeration Date: 07 Apr, 2022
NPI Last Update On: 13 Aug, 2026

Medical Licenses:

Healthcare professionals can hold one or more medical licenses for different specialties in the same state or different states. Related medical licenses for Dereck Curtis Wei are as mentioned below.

License NumberSpecializationStateStatus
A190956Psychiatry CaliforniaPrimary

Mailing Address

Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned Practice address.

Dereck Curtis Wei
400 N Pepper Ave,
Colton, CA - 92324-1801
Phone: 909-580-1000

Book an Appointment with Dereck Curtis Wei

To schedule an appointment, contact Dereck Curtis Wei at 2940 Inland Empire Blvd, Ontario, California or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dereck Curtis Wei:

Dereck Curtis Wei is a psychiatrist specializing in Psychiatry. He specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

Yes, Dereck Curtis Wei is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.
*Availability may change. Please contact the office directly to ask about appointments.

Dereck Curtis Wei practices at 2940 Inland Empire Blvd, Ontario, California, 91764-4898.

To schedule an appointment with Dereck Curtis Wei, please contact the office at 909-458-1350.

Reviews & Feedback

Have you visited Dereck Curtis Wei? Share your experience to help others looking for a psychiatrist in Ontario, CA.

Read Reviews / Give Feedback
**Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 14 September, 2026.