Psychologist | Clinical Psychology | 41+ years experience

Dr. David Allan Slier, PH.D.

4700 Spring St, Ste 306, La Mesa, California, 91942-2294

About Dr. David Allan Slier

Dr. David Allan Slier is a psychologist based in La Mesa, California with 41 years of experience in Clinical Psychology. He completed his graduation in 1985. He may accept the Medicare-approved amount. Patients may be billed for more than the Medicare deductible and coinsurance. Active license number of Dr. David Allan Slier is PSY 9927 for Clinical Psychology in California. His current practice location is 4700 Spring St, Ste 306, La Mesa. Patients can contact him at 619-532-6460 or can fax him at 619-532-6299. Dr. David Allan Slier, PH.D., specializes in Clinical Psychology and his NPI number (Unique professional ID assigned by NPPES) is 1528034725.

Dr. David Allan Slier 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 Allan Slier'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 Allan Slier
Specialization Clinical Psychology
Credentials PH.D.
Accepts Medicare Assignment May Accept
Gender Male
Practice Address: 4700 Spring St, Ste 306
La Mesa, CA - 91942-2294
Fax 619-532-6299

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 1456332659
Enrollment ID I20040525000746
NPI Number1528034725
NPI Enumeration Date: 27 Feb, 2006
NPI Last Update On: 13 Jul, 2026

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 Allan Slier are as mentioned below.

License NumberSpecializationStateStatus
PSY 9927Clinical 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 Allan Slier
34800 Bob Wilson Dr, Nmcsd, Attn: Medical Staff Services
San Diego, CA - 92134-1098
Phone: 619-532-6460
Fax: 619-532-6299

Book an Appointment with Dr. David Allan Slier

To schedule an appointment, contact Dr. David Allan Slier at 4700 Spring St, Ste 306, La Mesa, California or call the phone number listed below.

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Frequently Asked Questions

Below are some commonly asked questions about Dr. David Allan Slier:

Dr. David Allan Slier 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.

Dr. David Allan Slier has approximately 41 years of experience in Clinical Psychology.

Dr. David Allan Slier may accept Medicare assignment. Please contact the provider's office directly to verify Medicare participation and coverage details.

Yes, Dr. David Allan Slier 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 Allan Slier practices at 4700 Spring St, Ste 306, La Mesa, California, 91942-2294.

To schedule an appointment with Dr. David Allan Slier, please contact the office at 619-532-6460.

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