Psychologist | School Psychology

Mr. Antonio Casillas Jr.

10200 Lehigh Ave, Montclair, California, 91763-3550

About Mr. Antonio Casillas Jr.

Mr. Antonio Casillas Jr. is a psychologist based in Montclair, California who is specialized in School Psychology. His current practice location is 10200 Lehigh Ave, Montclair. Patients can contact him at 909-624-5697 or can fax him at 909-445-1613. Mr. Antonio Casillas Jr. NPI number (Unique professional ID assigned by NPPES) is 1538024807.

Mr. Antonio Casillas Jr. applies his expertise in mental health, learning, and behavior, to help children and youth succeed academically, socially, behaviorally, and emotionally.
School psychologists are uniquely qualified members of school teams that support students' ability to learn and teachers' ability to teach. They partner with families, teachers, school administrators, and other professionals to create safe, healthy, and supportive learning environments that strengthen connections between home, school, and the community.

Practice Information

Mr. Antonio Casillas Jr.'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 Mr. Antonio Casillas Jr.
Specialization School Psychology
Gender Male
Practice Address: 10200 Lehigh Ave,
Montclair, CA - 91763-3550
Fax 909-445-1613

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 Number1538024807
NPI Enumeration Date: 18 Dec, 2025
NPI Last Update On: 18 Dec, 2025

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 Mr. Antonio Casillas Jr. are as mentioned below.

License NumberSpecializationStateStatus
School Psychology CaliforniaPrimary

Mailing Address

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

Mr. Antonio Casillas Jr.
950 W D St,
Ontario, CA - 91762-3026
Phone: 909-459-2500
Fax: 909-459-2542

Book an Appointment with Mr. Antonio Casillas Jr.

To schedule an appointment, contact Mr. Antonio Casillas Jr. at 10200 Lehigh Ave, Montclair, California or call the phone number listed below.

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Frequently Asked Questions

Below are some commonly asked questions about Mr. Antonio Casillas Jr.:

Mr. Antonio Casillas Jr. is a psychologist specializing in School Psychology. He applies his expertise in mental health, learning, and behavior, to help children and youth succeed academically, socially, behaviorally, and emotionally.
School psychologists are uniquely qualified members of school teams that support students' ability to learn and teachers' ability to teach. They partner with families, teachers, school administrators, and other professionals to create safe, healthy, and supportive learning environments that strengthen connections between home, school, and the community.

Yes, Mr. Antonio Casillas Jr. 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.

Mr. Antonio Casillas Jr. practices at 10200 Lehigh Ave, Montclair, California, 91763-3550.

To schedule an appointment with Mr. Antonio Casillas Jr., please contact the office at 909-624-5697.

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