NPIMap

Individual provider Active NPI

William C Kwasny, MD

  • Anesthesiology Physician
  • Appleton, WI
National Provider Identifier
1962452532
Registry record updated Jul 13, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Anesthesiology PhysicianTaxonomy code 207L00000X
License
47809 Issued in WI
Practice address
1506 S Oneida St
Appleton, WI 54915-1305
Phone
(920) 738-2000
NPI assigned
May 12, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Jul 13, 2026

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

Specialties & licenses 1

Specialty (taxonomy)CodeLicenseStatePrimary
Anesthesiology Physician 207L00000X 47809 WI Primary

Addresses

Primary practice location

1506 S Oneida St
Appleton, WI 54915-1305

Mailing address

3420 Jackson St
Suite E
Oshkosh, WI 54901-8144

Other identifiers 1

IdentifierTypeStateIssuer
34643200MedicaidWI

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
I20050614000424 WI Practitioner - Anesthesiology 2163310020 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Anesthesiology
Education
Medical College of Wisconsin, 1999
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Association of Hospital Anesthesiologists SCGroup PAC ID 3476539875, 84 clinicians

Practice addresses (Care Compare)

1818 N Meade St
Appleton, WI 54911-3454
Phone (920) 731-4101

Hospital & facility affiliations

  • Thedacare Regional Med Ctr - Neenah Hospital, Neenah, WI, CCN 520045
  • Thedacare Regional Medical Center - Appleton Inc Hospital, Appleton, WI, CCN 520160

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
47809WIMDAnesthesiology Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Association of Hospital Anesthesiologists SC Anesthesiology CurrentSince Jan 3, 2017 Accepting new patients
Wisconsin Institute of Urology SC Past Accepting new patients
Ascension Medical Group-Fox Valley Wisconsin, Inc PastSince Mar 19, 2023 Accepting new patients
Anesthesia Services of the Fox Valley SC Anesthesiology Past Accepting new patients
New Anesthesiology SC Anesthesiology PastSince Jan 1, 2007 Accepting new patients
West Virginia University Medical Corporation Past Accepting new patients

Locations

1818 N Meade St
Appleton, WI 54911
Phone (920) 731-4101

2109 E Capitol Dr
#B
Appleton, WI 54911
Phone (844) 693-1483

130 2nd St
Neenah, WI 54956
Phone (920) 729-2063

Interoperability endpoints

  • Direct secure messaging: wkwasny176188@direct.thedacare.org

Organizations & group practices 6

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 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": "1147392000000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1783900800000",
    "number": "1962452532",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "3420 JACKSON ST",
            "address_2": "SUITE E",
            "city": "OSHKOSH",
            "state": "WI",
            "postal_code": "549018144"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1506 S ONEIDA ST",
            "city": "APPLETON",
            "state": "WI",
            "postal_code": "549151305",
            "telephone_number": "920-738-2000"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "KWASNY",
        "first_name": "WILLIAM",
        "middle_name": "C",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-12",
        "last_updated": "2026-07-13",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207L00000X",
            "taxonomy_group": "",
            "desc": "Anesthesiology",
            "state": "WI",
            "license": "47809",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "34643200",
            "state": "WI"
        }
    ],
    "endpoints": [],
    "other_names": []
}

Other providers in Appleton, WI

Sources for this page

Verify at the official NPI Registry.