NPIMap

Individual provider Active NPI

Steven L Kagen, M.D.

  • Allergy Physician
  • Appleton, WI
National Provider Identifier
1235175589
Registry record updated Apr 24, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Allergy PhysicianTaxonomy code 207KA0200X
License
22210-020 Issued in WI
Practice address
100 W Lawrence St Ste 410
Appleton, WI 54911-5754
Phone
(920) 739-9100
Fax
(920) 739-8779
NPI assigned
Jun 22, 2006
Last updated
Apr 24, 2026By the provider in NPPES
Sex
Male
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Apr 24, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Allergy Physician 207KA0200X 22210-020 WI Primary

Addresses

Primary practice location

100 W Lawrence St Ste 410
Appleton, WI 54911-5754

Mailing address

100 W Lawrence St Ste 410
Appleton, WI 54911-5754
Phone (920) 739-9100

Other identifiers 1

IdentifierTypeStateIssuer
30392500MedicaidWI

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in WI
Eligible to order & refer
  • Part B services
  • Medical equipment
  • Home health
  • Power mobility devices
  • Hospice
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20070215000028 WI Practitioner - Allergy/Immunology 2163424474 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Allergy/Immunology
Education
University of Wisconsin School of Medicine, 1976
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services

Practice addresses (Care Compare)

100 W Lawrence St
Suite 410
Appleton, WI 54911-5754
Phone (920) 739-9100

2333 Riverside Dr
Green Bay, WI 54301-1945
Phone (920) 432-8800

515 S Washburn St
Oshkosh, WI 54904-7975
Phone (920) 231-5900

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
22210-020WIMDAllergy Physician

Practice roles

OrganizationSpecialtyStatusNew patients
The Kagen Allergy Clinic SC CurrentSince Mar 1, 2012 Accepting new patients

Locations

100 W Lawrence St
Appleton, WI 54911
Phone (920) 739-9100

100 W Lawrence St
Ste 410
Appleton, WI 54911
Phone (414) 739-9100

2333 Riverside Dr
Green Bay, WI 54301
Phone (920) 432-8800

515 S Washburn St
Oshkosh, WI 54904
Phone (920) 231-5900

Organizations & group practices 1

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

Hospital & facility affiliations 12

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": "1150934400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776988800000",
    "number": "1235175589",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "100 W LAWRENCE ST STE 410",
            "city": "APPLETON",
            "state": "WI",
            "postal_code": "549115754",
            "telephone_number": "920-739-9100",
            "fax_number": "920-739-8779"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "100 W LAWRENCE ST STE 410",
            "city": "APPLETON",
            "state": "WI",
            "postal_code": "549115754",
            "telephone_number": "920-739-9100",
            "fax_number": "920-739-8779"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KAGEN",
        "first_name": "STEVEN",
        "middle_name": "L",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-06-22",
        "last_updated": "2026-04-24",
        "certification_date": "2026-04-24",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207KA0200X",
            "taxonomy_group": "",
            "desc": "Allergy & Immunology, Allergy",
            "state": "WI",
            "license": "22210-020",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "30392500",
            "state": "WI"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Appleton, WI

Sources for this page

Verify at the official NPI Registry.