Psychologist | Clinical Psychology

Dr. John Donald Sawyer Iii, PHD

680 Langsdorf Dr, # 219, Fullerton, California, 92831-3702

About Dr. John Donald Sawyer Iii

Dr. John Donald Sawyer Iii is a psychologist based in Fullerton, California who is specialized in Clinical Psychology. Active license number of Dr. John Donald Sawyer Iii is PSY11021 for Clinical Psychology in California. His current practice location is 680 Langsdorf Dr, # 219, Fullerton. Patients can contact him at 714-871-9732 or can fax him at 714-871-4561. Dr. John Donald Sawyer Iii, PHD, specializes in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1194822742.

Dr. John Donald Sawyer Iii 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. John Donald Sawyer Iii'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. John Donald Sawyer Iii
Specialization Clinical Psychology
Credentials PHD
Gender Male
Practice Address: 680 Langsdorf Dr, # 219
Fullerton, CA - 92831-3702
Fax 714-871-4561

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 Number1194822742
NPI Enumeration Date: 17 Sep, 2006
NPI Last Update On: 21 Oct, 2011

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. John Donald Sawyer Iii are as mentioned below.

License NumberSpecializationStateStatus
PSY11021Clinical 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. John Donald Sawyer Iii
680 Langsdorf Dr, # 219
Fullerton, CA - 92831-3702
Phone: 714-871-9732
Fax: 714-871-4561

Book an Appointment with Dr. John Donald Sawyer Iii

To schedule an appointment, contact Dr. John Donald Sawyer Iii at 680 Langsdorf Dr, # 219, Fullerton, California or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. John Donald Sawyer Iii:

Dr. John Donald Sawyer Iii 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. John Donald Sawyer Iii 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. John Donald Sawyer Iii practices at 680 Langsdorf Dr, # 219, Fullerton, California, 92831-3702.

To schedule an appointment with Dr. John Donald Sawyer Iii, please contact the office at 714-871-9732.

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