John Alexander, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

Practice address

633 Emerson St
Evanston, IL 60208-0844

Phone

(847) 491-8100

Fax

(847) 491-8100

NPI assigned

Dec 22, 2005

Last updated

Jul 13, 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

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.

Opted out of Medicare

Yes, effective Apr 29, 2016 through Apr 29, 2028

Medicare enrollment (NPD)

Not 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.

• Northwestern University

  dba Northwestern University Health Service

  • Student Health Clinic/Center
  • Evanston, IL
  • NPI 1447557723
  Authorized official Same address or phone

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

{
    "created_epoch": "1135209600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1336126176",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "733 MACLEAN AVE",
            "city": "KENILWORTH",
            "state": "IL",
            "postal_code": "600431033",
            "telephone_number": "847-256-7787",
            "fax_number": "847-491-5919"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "633 EMERSON ST",
            "city": "EVANSTON",
            "state": "IL",
            "postal_code": "602080844",
            "telephone_number": "847-491-8100",
            "fax_number": "847-491-8100"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ALEXANDER",
        "first_name": "JOHN",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2005-12-22",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IL",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Alden Estates of Evanston, Inc.
• Alexander C Karkazis DDS PLLC
• Anita Joshua Alexander, PA
• Brad Alexander, MD
• Calvin Alexander
• Shelbi Alexander
• Jennifer Alferi, M.D.
• James Louis Alford III, M.D.
• Joseph Alger
• Akbar M. Ali, MD

• Internal Medicine Physician in Evanston, IL
• Providers in Evanston, IL by specialty
• Internal Medicine Physician in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 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; Opt Out Affidavits.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.