Psychologist | General Psychology

Dr. Donald Niall Fallin, PSY.D.

225 W Winton Ave, Suite 202, Hayward, California, 94544-1216

About Dr. Donald Niall Fallin

Dr. Donald Niall Fallin is a psychologist based in Hayward, California who is specialized in General Psychology. Active license number of Dr. Donald Niall Fallin is PSY16419 for General Psychology in California. His current practice location is 225 W Winton Ave, Suite 202, Hayward. Patients can contact him at 510-783-6899. Dr. Donald Niall Fallin, PSY.D., specializes in General Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1396724290.

Dr. Donald Niall Fallin is specialized in psychological testing and evaluating or assessing patient's personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning. Accordingly, he performs counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy. He can diagnose and treat mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability by psycheducational evaluation, therapy, remediation, and consultation.

Practice Information

Dr. Donald Niall Fallin'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. Donald Niall Fallin
Specialization General Psychology
Credentials PSY.D.
Gender Male
Practice Address: 225 W Winton Ave, Suite 202
Hayward, CA - 94544-1216

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 Number1396724290
NPI Enumeration Date: 10 Jan, 2006
NPI Last Update On: 11 Sep, 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. Donald Niall Fallin are as mentioned below.

License NumberSpecializationStateStatus
PSY16419General 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. Donald Niall Fallin
225 W Winton Ave, Suite 202
Hayward, CA - 94544-1216
Phone: 510-783-6899

Book an Appointment with Dr. Donald Niall Fallin

To schedule an appointment, contact Dr. Donald Niall Fallin at 225 W Winton Ave, Suite 202, Hayward, California or call the phone number listed below.

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Frequently Asked Questions

Below are some commonly asked questions about Dr. Donald Niall Fallin:

Dr. Donald Niall Fallin is a psychologist specializing in General Psychology. He is specialized in psychological testing and evaluating or assessing patient's personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning. Accordingly, he performs counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy. He can diagnose and treat mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability by psycheducational evaluation, therapy, remediation, and consultation.

Yes, Dr. Donald Niall Fallin 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. Donald Niall Fallin practices at 225 W Winton Ave, Suite 202, Hayward, California, 94544-1216.

To schedule an appointment with Dr. Donald Niall Fallin, please contact the office at 510-783-6899.

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