Irene Walker Marquez-Biggs, M.D.

Primary specialty

Hospitalist PhysicianTaxonomy code 208M00000X

License

32570 Issued in AZ

Practice address

350 W Thomas Rd
Phoenix, AZ 85013-4409

Phone

(602) 406-3000

NPI assigned

May 25, 2006

Sex

Female

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)

Enrolled

Credentials

Doctor of Medicine

State licenses

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

{
    "created_epoch": "1148515200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1801842869",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 27340",
            "city": "PHOENIX",
            "state": "AZ",
            "postal_code": "850617340",
            "telephone_number": "602-943-9200",
            "fax_number": "602-216-3000"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "350 W THOMAS RD",
            "city": "PHOENIX",
            "state": "AZ",
            "postal_code": "850134409",
            "telephone_number": "602-406-3000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MARQUEZ-BIGGS",
        "first_name": "IRENE",
        "middle_name": "WALKER",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2006-05-25",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "AZ",
            "license": "32570",
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "AZ",
            "license": "32570",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "846694",
            "state": "AZ"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Kate E Maroney, MD
• Tincy Maroor
• Matthew M Maropis, D.M.D.
• Robert Ian Marouk, DO
• James Marquart
• Debra Pauline Marquez-Butts
• Angela Marquez, O.D.
• Ashtyn Marquez
• Audrey Marquez, AT, LAT
• Fabiola I Marquez

• Hospitalist Physician in Phoenix, AZ
• Providers in Phoenix, AZ by specialty
• Hospitalist Physician in Arizona

• 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.