Alex Nicholas Mueller, MD

Primary specialty

Emergency Medicine PhysicianTaxonomy code 207P00000X

License

036.180166 Issued in IL

Practice address

1 Saint Elizabeth Blvd
O Fallon, IL 62269-1099

Phone

(618) 234-2120

NPI assigned

Apr 22, 2021

Last updated

Aug 11, 2026By the provider in NPPES

Sex

Male

Sole proprietor

Yes

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

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Specialty

Emergency Medicine

Education

Other, 2023

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

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

{
    "created_epoch": "1619049600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1786406400000",
    "number": "1235711938",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1 SAINT ELIZABETH BLVD",
            "city": "O FALLON",
            "state": "IL",
            "postal_code": "622691099"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1 SAINT ELIZABETH BLVD",
            "city": "O FALLON",
            "state": "IL",
            "postal_code": "622691099",
            "telephone_number": "618-234-2120"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MUELLER",
        "first_name": "ALEX",
        "middle_name": "NICHOLAS",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2021-04-22",
        "last_updated": "2026-08-11",
        "certification_date": "2026-08-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207P00000X",
            "taxonomy_group": "",
            "desc": "Emergency Medicine",
            "state": "IL",
            "license": "036.180166",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Scott F Morrison, MD
• Grace Moss
• Natalie Mota, DPM
• Msa Alliance, LLC
• Msa Alliance, LLC
• Elizabeth A Mueller, SLP
• Jessica Christin Mueller, PHARMD
• Ryan Charles Mueller, MD
• Ashanti Muhammad-Pittman, LCPC
• Vinaya Mulkareddy, M.D.

• Emergency Medicine Physician in O'Fallon, IL
• Providers in O'Fallon, IL by specialty
• Emergency Medicine Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 11, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• 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.