Alexandros Nantsios, MD

Primary specialty

Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianTaxonomy code 208G00000X

License

2025008245 Issued in MO

Practice address

660 S Euclid Ave
Saint Louis, MO 63110-1010

Phone

(314) 362-7260

NPI assigned

Mar 30, 2026

Last updated

Apr 7, 2026By the provider in NPPES

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

Enrolled in MO

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 1

Specialty

Thoracic Surgery

Education

University of Ottawa, Faculty of Medicine, 2019

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Washington UniversityGroup PAC ID 9830008770, 2,968 clinicians

Practice addresses (Care Compare)

Hospital & facility affiliations

• Barnes Jewish Hospital Hospital, Saint Louis, MO, CCN 260032

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

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

• Washington University

  • Multi-Specialty Clinic/Center
  • Saint Louis, MO
  • NPI 1174563662
  Medicare reassignment Care Compare group

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

• 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": "1774828800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1775520000000",
    "number": "1811837198",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "660 S EUCLID AVE",
            "address_2": "CAMPUS BOX 8234",
            "city": "SAINT LOUIS",
            "state": "MO",
            "postal_code": "631101010",
            "telephone_number": "314-362-7260"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "660 S EUCLID AVE",
            "city": "SAINT LOUIS",
            "state": "MO",
            "postal_code": "631101010",
            "telephone_number": "314-362-7260"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "NANTSIOS",
        "first_name": "ALEXANDROS",
        "name_prefix": "Dr.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2026-03-30",
        "last_updated": "2026-04-07",
        "certification_date": "2026-04-07",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "208G00000X",
            "taxonomy_group": "",
            "desc": "Thoracic Surgery (Cardiothoracic Vascular Surgery)",
            "state": "MO",
            "license": "2025008245",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Parker Nanney
• Nano Consultancy Services LLC (Gateway Transitionalists)
• James Nantell, RRT
• Stephanie Kay Nanto, SLP
• Tamera S. Nanton, OTR/L
• Gena L Napier, M.D.
• Kelby Brett Napier, MD
• Stephen Cole Napier, DO
• Jason G Napuli, D.C, MBA
• Sneha Narasimhan, MD, PHD

• Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Saint Louis, MO
• Providers in Saint Louis, MO by specialty
• Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Missouri

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 7, 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.