Alexandra Gybbon Fallon, MD

Primary specialty

Hospitalist PhysicianTaxonomy code 208M00000X

License

2022039175 Issued in MO

Practice address

1 Childrens PL
Div Ped Hospitalist Med
Saint Louis, MO 63110-1002

Phone

(314) 454-2076

Fax

(314) 747-8953

NPI assigned

Feb 26, 2015

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

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in IL, MO2 enrollments

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.

Enrollment records 2

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Washington University

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1194765685
  Medicare reassignment NPD
• Washington University Physicians in Illinois, Inc

  • Multi-Specialty Clinic/Center
  • O Fallon, IL
  • NPI 1477076263
  Medicare reassignment NPD
• Washington University

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1962442475
  NPD
• Washington University Physicians in Illinois, Inc

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1457203135
  NPD
• Washington University Physicians in Illinois, Inc.

  • Multi-Specialty Clinic/Center
  • O Fallon, IL
  • NPI 1528569845
  NPD

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

{
    "created_epoch": "1424908800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1744848000000",
    "number": "1427440577",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 7412011",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606742011",
            "telephone_number": "314-454-2076",
            "fax_number": "314-747-8953"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1 CHILDRENS PL",
            "address_2": "DIV PED HOSPITALIST MED",
            "city": "SAINT LOUIS",
            "state": "MO",
            "postal_code": "631101002",
            "telephone_number": "314-454-2076",
            "fax_number": "314-747-8953"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "FALLON",
        "first_name": "ALEXANDRA",
        "middle_name": "GYBBON",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2015-02-26",
        "last_updated": "2025-04-17",
        "certification_date": "2023-03-31",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208000000X",
            "taxonomy_group": "",
            "desc": "Pediatrics",
            "state": "MO",
            "license": "2022039175",
            "primary": false
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "MO",
            "license": "2022039175",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "200120034",
            "state": "MO"
        }
    ],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy.et0965.epichosted.com/FHIRProxy/api/FHIR/DSTU2/",
            "affiliation": "Y",
            "affiliationName": "Washington University",
            "address_1": "1 Childrens Pl",
            "address_2": "Div Ped Hospitalist Med",
            "city": "Saint Louis",
            "state": "MO",
            "country_code": "US",
            "postal_code": "631101002",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Bryan A Faller, MD
• Mary S Faller, MD
• Megan Faller
• Kristen Marie Fallert
• Vincent Andrew Fallert, DDS
• Nathaniel Scott Falls
• Michael A Fallwell, OT
• Pamela Falter
• Melissa Falvey, CRNA
• Suzanne Falvey, LCSW

• Hospitalist Physician in Saint Louis, MO
• Providers in Saint Louis, MO by specialty
• Hospitalist Physician in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 17, 2025; 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.