John Chris Alexopoulos, M.D.

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

4301099567 Issued in MI

Practice address

79 Middleville Rd
Northport, NY 11768-2296

Phone

(631) 261-4400

Fax

(631) 863-4878

NPI assigned

May 8, 2008

Last updated

May 6, 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 2

Addresses

Medicare fee-for-service enrollment

Enrolled in NY

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

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

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

{
    "created_epoch": "1210204800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1778025600000",
    "number": "1306013446",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "79 MIDDLEVILLE RD",
            "city": "NORTHPORT",
            "state": "NY",
            "postal_code": "117682296",
            "telephone_number": "631-261-4400",
            "fax_number": "631-863-4878"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "79 MIDDLEVILLE RD",
            "city": "NORTHPORT",
            "state": "NY",
            "postal_code": "117682296",
            "telephone_number": "631-261-4400",
            "fax_number": "631-863-4878"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ALEXOPOULOS",
        "first_name": "JOHN",
        "middle_name": "CHRIS",
        "credential": "M.D.",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2008-05-08",
        "last_updated": "2026-05-06",
        "certification_date": "2026-05-06",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "MI",
            "license": "4301099567",
            "primary": true
        },
        {
            "code": "208M00000X",
            "taxonomy_group": "",
            "desc": "Hospitalist",
            "state": "MI",
            "license": "4301099567",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Bisma Fatima Ali, OD
• Tazkira Ali
• Asma Saeed Alizai, O.D.
• Germaine Cyla Allison, PH.D.
• Laurie Alonso

• Internal Medicine Physician in Northport, NY
• Providers in Northport, NY by specialty
• Internal Medicine Physician in New York

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on May 6, 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.