Psychologist | Clinical Psychology

Dr. William Marcus Tanner, PH.D.

3939 Atlantic Ave, Suite 208, Long Beach, California, 90807-3536

About Dr. William Marcus Tanner

Dr. William Marcus Tanner is a psychologist based in Long Beach, California who is specialized in Clinical Psychology. Active license number of Dr. William Marcus Tanner is 17184 for Clinical Psychology in California. His current practice location is 3939 Atlantic Ave, Suite 208, Long Beach. Patients can contact him at 562-997-0949 or can fax him at 562-997-0948. Dr. William Marcus Tanner, PH.D., specializes in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1801817606.

Dr. William Marcus Tanner 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. William Marcus Tanner'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. William Marcus Tanner
Specialization Clinical Psychology
Credentials PH.D.
Gender Male
Practice Address: 3939 Atlantic Ave, Suite 208
Long Beach, CA - 90807-3536
Fax 562-997-0948

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 Number1801817606
NPI Enumeration Date: 21 Jul, 2006
NPI Last Update On: 08 Jul, 2007

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. William Marcus Tanner are as mentioned below.

License NumberSpecializationStateStatus
17184Clinical 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. William Marcus Tanner
3939 Atlantic Ave, Suite 208
Long Beach, CA - 90807-3536
Phone: 562-997-0940
Fax: 562-997-0948

Book an Appointment with Dr. William Marcus Tanner

To schedule an appointment, contact Dr. William Marcus Tanner at 3939 Atlantic Ave, Suite 208, Long Beach, California or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. William Marcus Tanner:

Dr. William Marcus Tanner 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. William Marcus Tanner 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. William Marcus Tanner practices at 3939 Atlantic Ave, Suite 208, Long Beach, California, 90807-3536.

To schedule an appointment with Dr. William Marcus Tanner, please contact the office at 562-997-0949.

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