Psychologist | Clinical Psychology

Dr. William Mack Shannon, PH.D.

625 16th St Unit 401, Oakland, California, 94612-2180

About Dr. William Mack Shannon

Dr. William Mack Shannon is a psychologist based in Oakland, California who is specialized in Clinical Psychology. Active license number of Dr. William Mack Shannon is PSY22103 for Clinical Psychology in California. His current practice location is 625 16th St Unit 401, Oakland. Patients can contact him at 510-290-6203. Dr. William Mack Shannon, PH.D., specializes in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1063668275.

Dr. William Mack Shannon 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 Mack Shannon'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 Mack Shannon
Specialization Clinical Psychology
Credentials PH.D.
Gender Male
Practice Address: 625 16th St Unit 401,
Oakland, CA - 94612-2180

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 Number1063668275
NPI Enumeration Date: 07 Aug, 2008
NPI Last Update On: 27 Sep, 2024

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 Mack Shannon are as mentioned below.

License NumberSpecializationStateStatus
PSY22103Clinical 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 Mack Shannon
625 16th St Unit 401,
Oakland, CA - 94612-2180
Phone: 619-817-9309

Book an Appointment with Dr. William Mack Shannon

To schedule an appointment, contact Dr. William Mack Shannon at 625 16th St Unit 401, Oakland, California or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. William Mack Shannon:

Dr. William Mack Shannon 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 Mack Shannon 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 Mack Shannon practices at 625 16th St Unit 401, Oakland, California, 94612-2180.

To schedule an appointment with Dr. William Mack Shannon, please contact the office at 510-290-6203.

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