Michael Leonard Siwek, D.D.S

Primary specialty

DentistTaxonomy code 122300000X

Practice address

8368 Grand Ave
River Grove, IL 60171-1435

Phone

(708) 453-0500

Fax

(708) 453-0580

NPI assigned

Jun 15, 2006

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 IL

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: No
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Medicare enrollment (NPD)

Enrolled

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

{
    "created_epoch": "1150329600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1073557732",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "8 S 153 MADISON ST.",
            "city": "BURR RIDGE",
            "state": "IL",
            "postal_code": "605275553",
            "telephone_number": "630-321-1055",
            "fax_number": "708-453-0580"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "8368 GRAND AVE",
            "city": "RIVER GROVE",
            "state": "IL",
            "postal_code": "601711435",
            "telephone_number": "708-453-0500",
            "fax_number": "708-453-0580"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "SIWEK",
        "first_name": "MICHAEL",
        "middle_name": "LEONARD",
        "name_prefix": "Dr.",
        "credential": "D.D.S",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-06-15",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "122300000X",
            "taxonomy_group": "",
            "desc": "Dentist",
            "state": "IL",
            "license": null,
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Robert Rutkowski, D.C.
• S. David Demorest
• David Shifman, D.C.
• Frank Siracusa, DDS
• Jared Sivinski, DPT
• Angela Maria Snyder, MSN, FNP-BC
• Charles R Soderquist, DDS
• James J Stawowy, PHARMACIST
• Danuta B Superson, LMT
• Susan C Balberde, MD,SC

• All providers in River Grove, IL
• Dentist 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.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.