Fiona Gruzmark, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

125.087522 Issued in IL

Practice address

820 S Wood St
Chicago, IL 60612-4325

Phone

(312) 996-2933

NPI assigned

Mar 7, 2025

Last updated

May 30, 2026By the provider in NPPES

Sex

Female

Sole proprietor

Yes

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 IL

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

State licenses

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

{
    "created_epoch": "1741305600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1780099200000",
    "number": "1396544961",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "820 S WOOD ST STE 100",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606124325",
            "telephone_number": "312-996-2933"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "820 S WOOD ST",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606124325",
            "telephone_number": "312-996-2933"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GRUZMARK",
        "first_name": "FIONA",
        "credential": "MD",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2025-03-07",
        "last_updated": "2026-05-30",
        "certification_date": "2026-05-30",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IL",
            "license": "125.087522",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Warren Alexander Grunvald, MD
• Christina Ann Payton Grunwaldt, FNP-BC
• Gintare Gruodyte, FNP-BC
• Jaime Grutzendler, MD
• Kimberly Gruver, MS, LPC
• Garry Grygotis, DDS
• Steven Larry Gryll, PH.D.
• Lillian L Grymes
• Bogdana Gryniv
• Elizabeth Louise Grys, DDS, MS

• 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 May 30, 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.