Claire M Vargo, FNP

Primary specialty

Nurse PractitionerTaxonomy code 363L00000X

License

209019577 Issued in IL

Practice address

3 Saint Elizabeth Blvd Ste 1800
O Fallon, IL 62269-1281

Phone

(618) 233-6044

Fax

(618) 233-5195

NPI assigned

May 26, 2020

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 3

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: No

Green means eligible to order or refer.

Enrollment records 2

Specialty

Nurse Practitioner

Education

Other, 2016

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Prairie Cardiovascular Consultants LTDGroup PAC ID 3173435880, 94 clinicians

Washington University Physicians in Illinois IncGroup PAC ID 4789945163, 168 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Memorial Hospital Hospital, Belleville, IL, CCN 140185
• HSHS St Elizabeth'S Hospital Hospital, O Fallon, IL, CCN 140187
• Barnes Jewish Hospital Hospital, Saint Louis, MO, CCN 260032

Merit-based Incentive Payment System (MIPS)

Final score

88.01 of 100Reported as group

Quality

76.14

Promoting interoperability

99

Improvement activities

40

Cost

76.43

Medicare enrollment (NPD)

Enrolled

Credentials

Nurse Practitioner

State licenses

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.

• Prairie Cardiovascular Consultants LTD

  • Multi-Specialty Clinic/Center
  • Springfield, IL
  • NPI 1982714218
  Medicare reassignment Care Compare group NPD
• Washington University Physicians in Illinois, Inc

  • Multi-Specialty Clinic/Center
  • O Fallon, IL
  • NPI 1477076263
  Medicare reassignment Care Compare group NPD
• Fairview Heights Medical Group SC

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1679503668

  IL

  Medicare reassignment NPD
• Washington University

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1992746903
  Medicare reassignment
• Washington University Physicians in Illinois, Inc.

  • Multi-Specialty Clinic/Center
  • O Fallon, IL
  • NPI 1528569845
  NPD
• Fairview Heights Medical Group SC

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1073022000
  NPD
• Washington University Physicians in Illinois, Inc

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1457203135
  NPD

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

• Protestant Memorial Medical Center, Inc.

  • General Acute Care Hospital
  • Belleville, IL
  • NPI 1982796181
  Care Compare affiliation
• St Elizabeths Hospital of the Hospital Sisters of the Third Order

  • General Acute Care Hospital
  • O Fallon, IL
  • NPI 1629057302
  Care Compare affiliation
• Barnes Jewish Hospital

  • General Acute Care Hospital
  • Saint Louis, MO
  • NPI 1649299827
  Care Compare affiliation

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

{
    "created_epoch": "1590451200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1770163200000",
    "number": "1831712835",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3 SAINT ELIZABETH BLVD STE 1800",
            "city": "O FALLON",
            "state": "IL",
            "postal_code": "622691281",
            "telephone_number": "618-233-6044",
            "fax_number": "618-233-5195"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3 SAINT ELIZABETH BLVD STE 1800",
            "city": "O FALLON",
            "state": "IL",
            "postal_code": "622691281",
            "telephone_number": "618-233-6044",
            "fax_number": "618-233-5195"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "4500 Memorial Dr",
            "address_2": "Div Medical Oncology",
            "address_purpose": "LOCATION",
            "city": "Belleville",
            "state": "IL",
            "postal_code": "622265360",
            "country_code": "US",
            "telephone_number": "800-647-2098",
            "fax_number": "314-362-3192",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "VARGO",
        "first_name": "CLAIRE",
        "middle_name": "M",
        "name_prefix": "Ms.",
        "credential": "FNP",
        "sole_proprietor": "NO",
        "sex": "F",
        "enumeration_date": "2020-05-26",
        "last_updated": "2026-02-04",
        "certification_date": "2026-02-04",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "IL",
            "license": "209019577",
            "primary": true
        },
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "IL",
            "license": "209019577",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "420105608",
            "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": "4500 Memorial Dr",
            "address_2": "Div Medical Oncology",
            "city": "Belleville",
            "state": "IL",
            "country_code": "US",
            "postal_code": "622265360",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "cmcauliffe262152@ewd.direct.hshs.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CDA/CCD/TXT",
            "address_1": "3 Saint Elizabeth Blvd Ste 1800",
            "city": "O Fallon",
            "state": "IL",
            "country_code": "US",
            "postal_code": "622691281",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://epicproxy.et0965.epichosted.com/FHIRProxy/api/FHIR/DSTU2",
            "affiliation": "N",
            "endpointDescription": "BJC",
            "use": "HIE",
            "useDescription": "Health Information Exchange (HIE)",
            "contentType": "CSV",
            "contentTypeDescription": "CSV",
            "address_1": "4500 Memorial Dr",
            "city": "Belleville",
            "state": "IL",
            "country_code": "US",
            "postal_code": "622265360",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

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• Nurse Practitioner in O Fallon, IL
• Providers in O Fallon, IL by specialty
• Nurse Practitioner in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Feb 4, 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.