Cornerstone Diagnostics LLC

Primary specialty

Clinical Medical LaboratoryTaxonomy code 291U00000X

Legal business name

CORNERSTONE DIAGNOSTICS LLC

Practice address

621A River Highlands Blvd
Covington, LA 70433-8987

Phone

(985) 222-0628

Fax

(888) 388-0522

NPI assigned

Apr 5, 2023

Last updated

Sep 21, 2026By the provider in NPPES

Organization subpart

No

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

Authorized official

Name

Mr. Jeffrey R Dennis

Title

Managing Partner

Phone

(985) 222-0628

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in LA

Enrollment records 1

These CMS records do not include an NPI. They are shown because their name and street address match this provider’s.

CLIA laboratory certificates

Locations

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

{
    "created_epoch": "1680652800000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1789948800000",
    "number": "1932894078",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "621A RIVER HIGHLANDS BLVD",
            "city": "COVINGTON",
            "state": "LA",
            "postal_code": "704338987",
            "telephone_number": "985-222-0628",
            "fax_number": "888-388-0522"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "621A RIVER HIGHLANDS BLVD",
            "city": "COVINGTON",
            "state": "LA",
            "postal_code": "704338987",
            "telephone_number": "985-222-0628",
            "fax_number": "888-388-0522"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "organization_name": "CORNERSTONE DIAGNOSTICS LLC",
        "organizational_subpart": "NO",
        "enumeration_date": "2023-04-05",
        "last_updated": "2026-09-21",
        "certification_date": "2026-09-21",
        "status": "A",
        "authorized_official_last_name": "DENNIS",
        "authorized_official_first_name": "JEFFREY",
        "authorized_official_middle_name": "R",
        "authorized_official_title_or_position": "MANAGING PARTNER",
        "authorized_official_telephone_number": "985-222-0628",
        "authorized_official_name_prefix": "Mr."
    },
    "taxonomies": [
        {
            "code": "291U00000X",
            "taxonomy_group": "",
            "desc": "Clinical Medical Laboratory",
            "state": "NU",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Clinical Medical Laboratory in Covington, LA
• Providers in Covington, LA by specialty
• Clinical Medical Laboratory in Louisiana

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 21, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
• 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.