David Allan Slier, PH.D.

Primary specialty

Clinical PsychologistTaxonomy code 103TC0700X

License

PSY 9927 Issued in CA

Practice address

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

Phone

(619) 532-6460

Fax

(619) 532-6299

NPI assigned

Feb 27, 2006

Sex

Male

Sole proprietor

No

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in CA

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: No
• Power mobility devices: No
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Clinical Psychologist

Education

Other, 1985

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Philosophy

State licenses

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1140998400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1528034725",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "34800 BOB WILSON DR",
            "address_2": "NMCSD, ATTN: MEDICAL STAFF SERVICES",
            "city": "SAN DIEGO",
            "state": "CA",
            "postal_code": "921341098",
            "telephone_number": "619-532-6460",
            "fax_number": "619-532-6299"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4700 SPRING ST",
            "address_2": "STE 306",
            "city": "LA MESA",
            "state": "CA",
            "postal_code": "919422294",
            "telephone_number": "619-532-6460",
            "fax_number": "619-532-6299"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SLIER",
        "first_name": "DAVID",
        "middle_name": "ALLAN",
        "name_prefix": "Dr.",
        "credential": "PH.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-02-27",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103TC0700X",
            "taxonomy_group": "",
            "desc": "Psychologist, Clinical",
            "state": "CA",
            "license": "PSY 9927",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Clinical Psychologist in La Mesa, CA
• Providers in La Mesa, CA by specialty
• Clinical Psychologist in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.