Gregory Lee Guzik, MD

Primary specialty

Internal Medicine PhysicianTaxonomy code 207R00000X

License

01099872A Issued in IN

Practice address

535 Barnhill Dr
Indianapolis, IN 46202-5116

Phone

(317) 278-0070

NPI assigned

Mar 21, 2022

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 IN

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

Hematology/Oncology

Education

Wright State University Boonshoft School of Medicine, 2022

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine

State licenses

Interoperability endpoints

• Direct secure messaging: gguzik38449@ehrdirect.uhhospitals.org

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

{
    "created_epoch": "1647820800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776297600000",
    "number": "1447909213",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "535 BARNHILL DR",
            "city": "INDIANAPOLIS",
            "state": "IN",
            "postal_code": "462025116",
            "telephone_number": "317-948-6942"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "535 BARNHILL DR",
            "city": "INDIANAPOLIS",
            "state": "IN",
            "postal_code": "462025116",
            "telephone_number": "317-278-0070"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "GUZIK",
        "first_name": "GREGORY",
        "middle_name": "LEE",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2022-03-21",
        "last_updated": "2026-04-16",
        "certification_date": "2026-04-16",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "IN",
            "license": "01099872A",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Jacqueline Louise Guy, LCSW
• Leonard Dale Guyer, M.D.
• Grace Guyguyon
• Lauren M Guynn, LCSW
• Kate Lynn Guzek
• Amy Elizabeth Guzman
• Carina Guzman, MA
• Christian Guzman, DNP, AGPCNP-BC
• Lanna M Guzman, NP
• Michael F Guzman, M.D.

• Internal Medicine Physician in Indianapolis, IN
• Providers in Indianapolis, IN by specialty
• Internal Medicine Physician in Indiana

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 16, 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.