Individual provider Active NPI

Alan Clark, O.D.

  • Optometrist
  • Mountain View, CA
National Provider Identifier
1275689689
Registry record updated Jul 8, 2007
On this page

Key facts

NPPES NPI Registry
Primary specialty
OptometristTaxonomy code 152W00000X
License
9523T Issued in CA
Practice address
644 San Antonio Rd
Mountain View, CA 94040-1304
Phone
(650) 948-3260
NPI assigned
Jan 26, 2007
Last updated
Jul 8, 2007By the provider in NPPES
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jul 8, 2007

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Optometrist 152W00000X 9523T CA Primary

Addresses

Primary practice location

644 San Antonio Rd
Mountain View, CA 94040-1304

Mailing address

644 San Antonio Rd
Mountain View, CA 94040-1304
Phone (650) 948-3260

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Not listed in the public Medicare enrollment file

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Not enrolled

State licenses

LicenseStateTypeSpecialty
9523TCAMDOptometrist

Practice roles

OrganizationSpecialtyStatusNew patients
Yk Optometry, Inc. PastSince Sep 7, 2025 Accepting new patients

Organizations & group practices 1

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

NPI Registry JSON

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

{
    "created_epoch": "1169769600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1183852800000",
    "number": "1275689689",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "644 SAN ANTONIO RD",
            "city": "MOUNTAIN VIEW",
            "state": "CA",
            "postal_code": "940401304",
            "telephone_number": "650-948-3260"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "644 SAN ANTONIO RD",
            "city": "MOUNTAIN VIEW",
            "state": "CA",
            "postal_code": "940401304",
            "telephone_number": "650-948-3260"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "CLARK",
        "first_name": "ALAN",
        "name_prefix": "Dr.",
        "credential": "O.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2007-01-26",
        "last_updated": "2007-07-08",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "152W00000X",
            "taxonomy_group": "",
            "desc": "Optometrist",
            "state": "CA",
            "license": "9523T",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Mountain View, CA

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 8, 2007; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.