Loren R Ayres, M.D.

Primary specialty

Anatomic Pathology & Clinical Pathology PhysicianTaxonomy code 207ZP0102X

License

A23918 Issued in CA

Practice address

300 W Huntington Dr
Arcadia, CA 91007-3402

Phone

(626) 445-4441

NPI assigned

Mar 17, 2006

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

Credentials

Doctor of Medicine

State licenses

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

{
    "created_epoch": "1142553600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1184693301",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 10076",
            "city": "VAN NUYS",
            "state": "CA",
            "postal_code": "914100076",
            "telephone_number": "805-578-8300",
            "fax_number": "805-578-8950"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "300 W HUNTINGTON DR",
            "city": "ARCADIA",
            "state": "CA",
            "postal_code": "910073402",
            "telephone_number": "626-445-4441"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "AYRES",
        "first_name": "LOREN",
        "middle_name": "R",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-03-17",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207ZC0500X",
            "taxonomy_group": "",
            "desc": "Pathology, Cytopathology",
            "state": "CA",
            "license": "A23918",
            "primary": false
        },
        {
            "code": "207ZP0102X",
            "taxonomy_group": "",
            "desc": "Pathology, Anatomic Pathology & Clinical Pathology",
            "state": "CA",
            "license": "A23918",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "DHS PPIN",
            "identifier": "00A239180",
            "state": "CA"
        }
    ],
    "endpoints": [],
    "other_names": []
}

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• Anatomic Pathology & Clinical Pathology Physician in Arcadia, CA
• Providers in Arcadia, CA by specialty
• Anatomic Pathology & Clinical Pathology Physician in California

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; 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.