Psychologist | Clinical Psychology

Dr. Oscar A Donoso, PHD, LP

701 S Parker St Ste 2800, Orange, California, 92868-4720

About Dr. Oscar A Donoso

Dr. Oscar A Donoso is a psychologist based in Orange, California who is specialized in Clinical Psychology. Active license number of Dr. Oscar A Donoso is 24553 for Clinical Psychology in California. His current practice location is 701 S Parker St Ste 2800, Orange. Patients can contact him at 925-282-1778. Dr. Oscar A Donoso, PHD, LP, specializes in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1801025879.

Dr. Oscar A Donoso is a mental health professional with highly specialized training in the diagnosis and psychological treatment of mental, behavioral and emotional illnesses, including obsessive-compulsive disorder (OCD). His main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that he can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Practice Information

Dr. Oscar A Donoso'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 Dr. Oscar A Donoso
Specialization Clinical Psychology
Credentials PHD, LP
Gender Male
Practice Address: 701 S Parker St Ste 2800,
Orange, CA - 92868-4720

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 Number1801025879
NPI Enumeration Date: 10 Jul, 2009
NPI Last Update On: 14 Jul, 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 Dr. Oscar A Donoso are as mentioned below.

License NumberSpecializationStateStatus
24553Clinical 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.

Dr. Oscar A Donoso
701 S Parker St Ste 2800,
Orange, CA - 92868-4720

Book an Appointment with Dr. Oscar A Donoso

To schedule an appointment, contact Dr. Oscar A Donoso at 701 S Parker St Ste 2800, Orange, California or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Oscar A Donoso:

Dr. Oscar A Donoso is a psychologist specializing in Clinical Psychology. He is a mental health professional with highly specialized training in the diagnosis and psychological treatment of mental, behavioral and emotional illnesses, including obsessive-compulsive disorder (OCD). His main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that he can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Yes, Dr. Oscar A Donoso 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.

Dr. Oscar A Donoso practices at 701 S Parker St Ste 2800, Orange, California, 92868-4720.

To schedule an appointment with Dr. Oscar A Donoso, please contact the office at 925-282-1778.

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