Individual provider Active NPI

Nathan M Lebak, MD

  • Allergy & Immunology (Internal Medicine) Physician
  • Burlington, WI
National Provider Identifier
1285841155
Registry record updated Jul 17, 2025
On this page

Key facts

NPPES NPI Registry
Primary specialty
Allergy & Immunology (Internal Medicine) PhysicianTaxonomy code 207RA0201X
License
51921 Issued in WI
Practice address
248 McHenry St
Burlington, WI 53105-1828
Phone
(262) 767-8000
NPI assigned
May 17, 2007
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 17, 2025

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Allergy & Immunology (Internal Medicine) Physician 207RA0201X 51921 WI Primary

Addresses

Primary practice location

248 McHenry St
Burlington, WI 53105-1828

Mailing address

PO Box 735044
Chicago, IL 60673-5044
Phone (800) 326-2250

Other identifiers 1

IdentifierTypeStateIssuer
35323300MedicaidWI

Electronic endpoints 2

TypeEndpointUseAffiliation
Direct Messaging Address nlebak47631@direct.myadvocateaurora.org Direct
FHIR URL https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WI
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

Enrollment IDStateProvider typePAC IDDetails
I20080926000498 WI Practitioner - Allergy/Immunology 9931276326 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Allergy/Immunology
Education
University of Wisconsin School of Medicine, 2003
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Aurora Medical Group, Inc.Group PAC ID 6709794258, 3,764 clinicians

Practice addresses (Care Compare)

252 McHenry St
Burlington, WI 53105-1828
Phone (262) 767-7000

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
51921WIMDAllergy & Immunology (Internal Medicine) Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Aurora Medical Group, Inc. CurrentSince Sep 1, 2008 Accepting new patients
Aurora Medical Group, Inc. CurrentSince Sep 1, 2008 Accepting new patients
Aurora Medical Group, Inc. Past Accepting new patients
Aurora Medical Group, Inc. Past Accepting new patients

Locations

252 McHenry St
Ste 8
Burlington, WI 53105

252 McHenry St
Burlington, WI 53105
Phone (262) 763-2411

248 McHenry St
Burlington, WI 53105
Phone (262) 767-8000

1550 Hobbs Dr
Delavan, WI 53115
Phone (262) 740-4200

W3985 Highway NN
Elkhorn, WI 53121
Phone (262) 741-2000

146 E Geneva Sq
Lake Geneva, WI 53147
Phone (262) 249-4678

3301 W Forest Home Ave
Milwaukee, WI 53215
Phone (414) 389-2233

1020 N 12th St
Milwaukee, WI 53233
Phone (414) 219-3056

8400 Washington Ave
Mount Pleasant, WI 53406
Phone (262) 231-3000

620 15th Ave
Union Grove, WI 53182
Phone (262) 878-1211

Interoperability endpoints

  • Direct secure messaging: nlebak47631@direct.myadvocateaurora.org

Organizations & group practices 4

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

Hospital & facility affiliations 1

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

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

{
    "created_epoch": "1179360000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1752710400000",
    "number": "1285841155",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "PO BOX 735044",
            "city": "CHICAGO",
            "state": "IL",
            "postal_code": "606735044",
            "telephone_number": "800-326-2250"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "248 MCHENRY ST",
            "city": "BURLINGTON",
            "state": "WI",
            "postal_code": "531051828",
            "telephone_number": "262-767-8000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LEBAK",
        "first_name": "NATHAN",
        "middle_name": "M",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2007-05-17",
        "last_updated": "2025-07-17",
        "certification_date": "2025-07-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RA0201X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Allergy & Immunology",
            "state": "WI",
            "license": "51921",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "35323300",
            "state": "WI"
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "nlebak47631@direct.myadvocateaurora.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "252 McHenry St Ste 8",
            "city": "Burlington",
            "state": "WI",
            "country_code": "US",
            "postal_code": "531051828",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://EpicFHIR.aurora.org/FHIR/MYAURORA/api/FHIR/DSTU2/",
            "affiliation": "N",
            "address_1": "252 McHenry St Ste 8",
            "city": "Burlington",
            "state": "WI",
            "country_code": "US",
            "postal_code": "531051828",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Burlington, WI

Sources for this page

Verify at the official NPI Registry.