Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. David Allan Slier, PHD

Individual provider Clinical Psychologist · NPI 1528034725

Dr. David Allan Slier, PHD is a Clinical Psychologist in LA Mesa, California. Qualified in 1985, 41 years ago. Licensed in California.

Years since qualifying
41
Licensed in
CA
In the registry since
2006
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

4700 Spring St Ste 306
LA Mesa, CA 91942-2294
Phone: (619) 532-6460
Fax: (619) 532-6299
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence PSY 9927 (CA)

Record details

NPI number1528034725
Entity typeIndividual (Type 1)
GenderMale
Credentials PHD
Sole proprietorNo
NPI enumeratedFebruary 27, 2006
Last updated in NPPESJuly 13, 2026
Mailing address34800 Bob Wilson Dr, Nmcsd, Attn: Medical Staff Services, San Diego, CA 92134-1098

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL PSYCHOLOGIST
Medical schoolOTHER
Graduated 1985 (41 years in practice)
Accepts Medicare assignment Not indicated

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