Psychologist | Clinical Psychology

Dr. David N Day, PH.D.

225 Spring St, Pleasanton, California, 94566-6625

About Dr. David N Day

Dr. David N Day is a psychologist based in Pleasanton, California who is specialized in Clinical Psychology. Active license number of Dr. David N Day is PSY7972 for Clinical Psychology in California. His current practice location is 225 Spring St, Pleasanton. Patients can contact him at 925-846-7768 or can fax him at 925-846-2113. Dr. David N Day, PH.D., specializes in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1245463850.

Dr. David N Day 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. David N Day'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. David N Day
Specialization Clinical Psychology
Credentials PH.D.
Gender Male
Practice Address: 225 Spring St,
Pleasanton, CA - 94566-6625
Fax 925-846-2113

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 Number1245463850
NPI Enumeration Date: 30 Aug, 2009
NPI Last Update On: 30 Aug, 2009

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. David N Day are as mentioned below.

License NumberSpecializationStateStatus
PSY7972Clinical 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. David N Day
225 Spring St,
Pleasanton, CA - 94566-6625
Phone: 925-846-7768
Fax: 925-846-2113

Book an Appointment with Dr. David N Day

To schedule an appointment, contact Dr. David N Day at 225 Spring St, Pleasanton, California or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. David N Day:

Dr. David N Day 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. David N Day 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. David N Day practices at 225 Spring St, Pleasanton, California, 94566-6625.

To schedule an appointment with Dr. David N Day, please contact the office at 925-846-7768.

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