Guillermo Reyes Martinez, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

125087023 Issued in IL

Practice address

3134 N Clark St
Chicago, IL 60657-4414

Phone

(312) 766-4949

NPI assigned

Mar 28, 2025

Last updated

Jun 28, 2025By 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

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Not enrolled

Credentials

Doctor of Medicine

State licenses

Interoperability endpoints

• Direct secure messaging: greyesmartinez427830@direct.myadvocateaurora.org

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

{
    "created_epoch": "1743120000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1751068800000",
    "number": "1033912787",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3134 N CLARK ST",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606574414",
            "telephone_number": "312-766-4949"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "3134 N CLARK ST",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606574414",
            "telephone_number": "312-766-4949"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "REYES MARTINEZ",
        "first_name": "GUILLERMO",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2025-03-28",
        "last_updated": "2025-06-28",
        "certification_date": "2025-06-28",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "390200000X",
            "taxonomy_group": "",
            "desc": "Student in an Organized Health Care Education/Training Program",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IL",
            "license": "125087023",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Amanda Michelle Rey, PA-C
• Katherine Rey
• Mariana Reyes Daza
• Maribel Reyes de Lobos, DDS
• Maria Del Carmen Reyes Lopez
• Alexandra M Reyes, LCSW
• Alexandro Reyes
• Aliyah Reyes
• Alvaro Reyes, MD
• Ana V Reyes, LPC

• Internal Medicine Physician in Chicago, IL
• Providers in Chicago, 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 Jun 28, 2025; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.