Bertram P. Irslinger, OD.

Primary specialty

Sports Vision OptometristTaxonomy code 152WS0006X

Practice address

409 Front St
McHenry, IL 60050-5527

Phone

(815) 385-1590

Fax

(815) 385-1605

NPI assigned

Aug 5, 2006

Last updated

Sep 11, 2025By the provider in NPPES

Sex

Male

Sole proprietor

Yes

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 4

Addresses

Medicare fee-for-service enrollment

Not listed in the public Medicare enrollment file

Medicare enrollment (NPD)

Enrolled

State licenses

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

{
    "created_epoch": "1154736000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1386653806",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "409 FRONT ST",
            "city": "MCHENRY",
            "state": "IL",
            "postal_code": "600505527",
            "telephone_number": "815-385-1590",
            "fax_number": "815-385-1605"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "409 FRONT ST",
            "city": "MCHENRY",
            "state": "IL",
            "postal_code": "600505527",
            "telephone_number": "815-385-1590",
            "fax_number": "815-385-1605"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "IRSLINGER",
        "first_name": "BERTRAM",
        "middle_name": "P.",
        "name_prefix": "Dr.",
        "credential": "OD.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-08-05",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "152W00000X",
            "taxonomy_group": "",
            "desc": "Optometrist",
            "state": "IL",
            "license": null,
            "primary": false
        },
        {
            "code": "152WC0802X",
            "taxonomy_group": "",
            "desc": "Optometrist, Corneal and Contact Management",
            "state": "IL",
            "license": null,
            "primary": false
        },
        {
            "code": "152WS0006X",
            "taxonomy_group": "",
            "desc": "Optometrist, Sports Vision",
            "state": "IL",
            "license": null,
            "primary": true
        },
        {
            "code": "152WX0102X",
            "taxonomy_group": "",
            "desc": "Optometrist, Occupational Vision",
            "state": "IL",
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

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• Optometrist in McHenry, IL
• Providers in McHenry, IL by specialty
• Optometrist in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 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.