Psychologist | Clinical Psychology | 42+ years experience

William J Sieber, PH.D.

200 W Arbor Dr, San Diego, California, 92103-9000

About William J Sieber

William J Sieber is a psychologist based in San Diego, California with 42 years of experience in Clinical Psychology. He completed his graduation in 1984. He accepts the Medicare-approved amount. Patients will not be billed for any more than the Medicare deductible and coinsurance. Active license number of William J Sieber is 19435 for Clinical Psychology in California. His current practice location is 200 W Arbor Dr, San Diego. Patients can contact him at 800-926-8273. William J Sieber, PH.D., specializes in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1851413165.

William J Sieber 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

William J Sieber'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 William J Sieber
Specialization Clinical Psychology
Credentials PH.D.
Accepts Medicare Assignment Yes
Experience 42+ years
Graduation Year 1984
Gender Male
Practice Address: 200 W Arbor Dr,
San Diego, CA - 92103-9000

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.

PAC ID 1759476302
Enrollment ID I20070927000739
NPI Number1851413165
NPI Enumeration Date: 06 Apr, 2007
NPI Last Update On: 05 Feb, 2019

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 William J Sieber are as mentioned below.

License NumberSpecializationStateStatus
19435Clinical Psychology CaliforniaPrimary

Group Practice

Group practices are practice of medicine by a group of healthcare professionals who share their premises and other resources. Following list states all the group name with which William J Sieber is associated with along with the number of members in that group.
Organization Name (Group PAC ID) Members
Regents Of The Univesity Of California - Ucsd Medical Group (3577476761)1524
Uc San Diego Health Community Group (3971849175)98

Mailing Address

Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned Practice address.

William J Sieber
Po Box 232410,
San Diego, CA - 92193-2410

Book an Appointment with William J Sieber

To schedule an appointment, contact William J Sieber at 200 W Arbor Dr, San Diego, California or call the phone number listed below.

Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about William J Sieber:

William J Sieber 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.

William J Sieber has approximately 42 years of experience in Clinical Psychology.

Yes, William J Sieber accepts Medicare assignment, meaning the provider participates in Medicare and accepts Medicare-approved amounts for eligible services.

Yes, William J Sieber 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.

William J Sieber practices at 200 W Arbor Dr, San Diego, California, 92103-9000.

To schedule an appointment with William J Sieber, please contact the office at 800-926-8273.

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