Keystone Diagnostics LLC

Primary specialty

Clinic/CenterTaxonomy code 261Q00000X

Legal business name

KEYSTONE DIAGNOSTICS LLC

Practice address

458 Boynton Ave Apt A2
San Jose, CA 95117-1426

Phone

(307) 207-3695

Fax

(307) 207-3695

NPI assigned

Sep 18, 2026

Organization subpart

No

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

Authorized official

Name

Ajay Singh

Title

Owner

Phone

(307) 207-3695

Specialties & licenses 2

Addresses

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

{
    "created_epoch": "1789689600000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1789689600000",
    "number": "1184536831",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "458 BOYNTON AVE APT A2",
            "city": "SAN JOSE",
            "state": "CA",
            "postal_code": "951171426",
            "telephone_number": "307-207-3695",
            "fax_number": "307-207-3695"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "458 BOYNTON AVE APT A2",
            "city": "SAN JOSE",
            "state": "CA",
            "postal_code": "951171426",
            "telephone_number": "307-207-3695",
            "fax_number": "307-207-3695"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "KEYSTONE DIAGNOSTICS LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2026-09-18",
        "last_updated": "2026-09-18",
        "certification_date": "2026-09-18",
        "status": "A",
        "authorized_official_last_name": "SINGH",
        "authorized_official_first_name": "AJAY",
        "authorized_official_title_or_position": "OWNER",
        "authorized_official_telephone_number": "307-207-3695"
    },
    "taxonomies": [
        {
            "code": "261Q00000X",
            "taxonomy_group": "",
            "desc": "Clinic/Center",
            "state": null,
            "license": null,
            "primary": true
        },
        {
            "code": "261QH0100X",
            "taxonomy_group": "",
            "desc": "Clinic/Center, Health Service",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Clinic/Center in San Jose, CA
• Providers in San Jose, CA by specialty
• Clinic/Center in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 18, 2026; 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.