Matthew Leonard Ellefson

Primary specialty

Certified Registered Nurse AnesthetistTaxonomy code 367500000X

License

339965 Issued in AZ

Practice address

1400 S Dobson Rd
Mesa, AZ 85202-4707

Phone

(480) 412-3000

NPI assigned

Jan 21, 2026

Sex

Male

Sole proprietor

No

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

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Specialty

Certified Registered Nurse Anesthetist (Crna)

Education

Other, 2026

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

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

{
    "created_epoch": "1768953600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1782864000000",
    "number": "1629937818",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "4320 BEECHER CT NW",
            "city": "CEDAR RAPIDS",
            "state": "IA",
            "postal_code": "524054903",
            "telephone_number": "712-541-2157",
            "fax_number": "712-541-2157"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1400 S DOBSON RD",
            "city": "MESA",
            "state": "AZ",
            "postal_code": "852024707",
            "telephone_number": "480-412-3000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ELLEFSON",
        "first_name": "MATTHEW",
        "middle_name": "LEONARD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2026-01-21",
        "last_updated": "2026-07-01",
        "certification_date": "2026-07-01",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "367500000X",
            "taxonomy_group": "",
            "desc": "Nurse Anesthetist, Certified Registered",
            "state": "AZ",
            "license": "339965",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Maged Elkhouly, M.D.
• Tiffany Ellegard, MS, RDN
• Andrea Jean Ellensohn, OT
• Jonathan Elley, PT, DPT
• David John Ellingson, DDS
• Elliot Smiles Dentistry, LLP

• Certified Registered Nurse Anesthetist in Mesa, AZ
• Providers in Mesa, AZ by specialty
• Certified Registered Nurse Anesthetist in Arizona

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 1, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• 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.