Individual provider Active NPI

Arthur James Keenan, D.C.

  • Chiropractor
  • Sierra Madre, CA
National Provider Identifier
1558339523
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
ChiropractorTaxonomy code 111N00000X
License
DC21018 Issued in CA
Practice address
90 N Baldwin Ave
#2
Sierra Madre, CA 91024-1963
Phone
(626) 355-9884
NPI assigned
Mar 8, 2006
Last updated
Jul 13, 2026By the provider in NPPES
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 13, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Chiropractor 111N00000X DC21018 CA Primary

Addresses

Primary practice location

90 N Baldwin Ave
#2
Sierra Madre, CA 91024-1963

Mailing address

90 N Baldwin Ave
#2
Sierra Madre, CA 91024-1963
Phone (626) 355-9884

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)
Enrolled

State licenses

LicenseStateTypeSpecialty
DC21018CAMDChiropractor

NPI Registry JSON

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

{
    "created_epoch": "1141776000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1558339523",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "90 N BALDWIN AVE",
            "address_2": "#2",
            "city": "SIERRA MADRE",
            "state": "CA",
            "postal_code": "910241963",
            "telephone_number": "626-355-9884"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "90 N BALDWIN AVE",
            "address_2": "#2",
            "city": "SIERRA MADRE",
            "state": "CA",
            "postal_code": "910241963",
            "telephone_number": "626-355-9884"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KEENAN",
        "first_name": "ARTHUR",
        "middle_name": "JAMES",
        "name_prefix": "Dr.",
        "credential": "D.C.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-03-08",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "111N00000X",
            "taxonomy_group": "",
            "desc": "Chiropractor",
            "state": "CA",
            "license": "DC21018",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

Other providers in Sierra Madre, CA

Sources for this page

  • 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.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.