Individual provider Active NPI

Allen C. Foster, MD

  • Sleep Medicine (Internal Medicine) Physician
  • La Crosse, WI
National Provider Identifier
1043261399
Registry record updated Apr 18, 2024
On this page

Key facts

NPPES NPI Registry
Primary specialty
Sleep Medicine (Internal Medicine) PhysicianTaxonomy code 207RS0012X
License
38156-020 Issued in WI
Practice address
1836 South Ave
La Crosse, WI 54601-5429
Phone
(608) 782-7300
NPI assigned
May 12, 2006
Sex
Male
Sole proprietor
No

NPPES NPI Registry

Updated by the provider on Apr 18, 2024

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Sleep Medicine (Internal Medicine) Physician 207RS0012X 38156-020 WI Primary
Internal Medicine Physician 207R00000X 38156-020 WI

Addresses

Primary practice location

1836 South Ave
La Crosse, WI 54601-5429

Mailing address

1836 South Ave
La Crosse, WI 54601-5429
Phone (608) 782-7300

Other practice location 1

430 E Division St
Fond du Lac, WI 54935-4560
Phone (715) 235-5531

Other identifiers 1

IdentifierTypeStateIssuer
32286700MedicaidWI

Other names 1

  • Allen C. Anderson Former name

Electronic endpoints 3

TypeEndpointUseAffiliation
FHIR URL https://fhir.ssmhc.com/fhir/api/FHIR/DSTU2/ Other
Direct Messaging Address afoster330002@direct-ehr-ssmhc.com Direct
Direct Messaging Address afoster870812@direct.gundersenhealth.org Direct

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
I20080213000342 WI Practitioner - Sleep MedicinePractitioner - Internal Medicine 7517040637 Reassigns benefits to 16 organizations

Care Compare profile

Medicare Care Compare
Specialty
Sleep Medicine
Education
University of Illinois College of Med (CHI/Peor/Rock/CHM-Urb), 1993
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Gundersen Clinic LTDGroup PAC ID 9638082779, 422 clinicians

Practice addresses (Care Compare)

1836 S Ave
La Crosse, WI 54601-5429
Phone (608) 783-7300

505 Gopher Dr
Tomah, WI 54660-4513
Phone (608) 372-4111

Hospital & facility affiliations

National Provider Directory

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

State licenses

LicenseStateTypeSpecialty
38156-020WIMDInternal Medicine Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Moundview Memorial Hospital & Clinics, Inc. CurrentSince Sep 20, 2025 Accepting new patients
Black River Health Inc CurrentSince May 1, 2024 Accepting new patients
Reedsburg Area Medical Center Inc CurrentSince Aug 4, 2024 Accepting new patients
Tri-County Memorial Hospital, Inc. Current Accepting new patients
Tomah Memorial Hospital Inc CurrentSince Jun 1, 2024 Accepting new patients
Gundersen Lutheran Medical Center, Inc Internal Medicine CurrentSince Apr 30, 2024 Accepting new patients
Moundview Memorial Hospital & Clinics, Inc. CurrentSince Sep 20, 2025 Accepting new patients
Tomah Memorial Hospital Inc CurrentSince Jun 1, 2024 Accepting new patients
Gundersen Lutheran Express Care, Inc CurrentSince Apr 30, 2024 Accepting new patients
Moundview Memorial Hospital & Clinics, Inc Internal Medicine Current Accepting new patients
Saint Elizabeths Hospital of Wabasha Inc Current Accepting new patients
Reedsburg Area Medical Center, Inc. CurrentSince Aug 4, 2024 Accepting new patients
Memorial Hospital of Boscobel CurrentSince Sep 20, 2025 Accepting new patients
St. Joseph'S Health Services, Inc. CurrentSince Sep 20, 2025 Accepting new patients
Palmer Lutheran Health Center, Inc. CurrentSince Sep 20, 2025 Accepting new patients
Black River Health Inc Current Accepting new patients
St. Joseph'S Health Services, Inc. CurrentSince Sep 20, 2025 Accepting new patients
Tomah Memorial Hospital Inc CurrentSince Nov 1, 2025 Accepting new patients
Saint Elizabeths Hospital of Wabasha Inc CurrentSince Nov 30, 2024 Accepting new patients
Southwest Health Center, Inc CurrentSince Dec 1, 2025 Accepting new patients
Saint Elizabeths Hospital of Wabasha Inc CurrentSince Nov 30, 2024 Accepting new patients
Tri-County Memorial Hospital, Inc. CurrentSince Sep 20, 2025 Accepting new patients
Memorial Hospital of Boscobel CurrentSince Sep 20, 2025 Accepting new patients
Gundersen Lutheran Medical Center, Inc CurrentSince Apr 30, 2024 Accepting new patients
St. Joseph'S Health Services, Inc. Current Accepting new patients
Reedsburg Area Medical Center, Inc. CurrentSince Dec 1, 2025 Accepting new patients
Tri-County Memorial Hospital, Inc. CurrentSince Sep 20, 2025 Accepting new patients
Gundersen Clinic LTD CurrentSince Apr 30, 2024 Accepting new patients
Gundersen Lutheran Medical Center Inc Current Accepting new patients
Southwest Health Center, Inc. CurrentSince Dec 1, 2025 Accepting new patients
Black River Health Inc CurrentSince May 1, 2024 Accepting new patients
St Luke'S Methodist Hospital Current Accepting new patients
Gundersen Lutheran Medical Center Inc Past Accepting new patients

Locations

112 Jefferson St
West Union, IA 52175
Phone (563) 422-3811

1200 Grant Blvd W
Wabasha, MN 55981
Phone (651) 565-4531

711 W Adams St
Blk River Fls, WI 54615
Phone (715) 284-1302

205 Parker St
Boscobel, WI 53805
Phone (608) 375-4112

402 W Lake St
Friendship, WI 53934
Phone (608) 339-3331

710 Denton St
La Crosse, WI 54601
Phone (608) 775-6680

1910 South Ave
La Crosse, WI 54601
Phone (608) 775-2287

1836 South Ave
La Crosse, WI 54601
Phone (608) 788-8102

1400 Eastside Rd
Platteville, WI 53818
Phone (608) 342-4712

1104 21st St
Reedsburg, WI 53959
Phone (608) 524-4303

2000 N Dewey Ave
Reedsburg, WI 53959
Phone (608) 524-6487

501 Gopher Dr
Tomah, WI 54660
Phone (608) 371-2181

505 Gopher Dr
Tomah, WI 54660
Phone (608) 372-2181

18601 Lincoln St
Whitehall, WI 54773
Phone (715) 538-1712

Interoperability endpoints

  • Direct secure messaging: afoster1115596@direct.unitypoint.org
  • Direct secure messaging: afoster330002@direct-ehr-ssmhc.com
  • Direct secure messaging: afoster870812@direct.emplifyhealth.org

Organizations & group practices 33

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.

View all 33

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": "1713398400000",
    "number": "1043261399",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "1836 SOUTH AVE",
            "city": "LA CROSSE",
            "state": "WI",
            "postal_code": "546015429",
            "telephone_number": "608-782-7300"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "1836 SOUTH AVE",
            "city": "LA CROSSE",
            "state": "WI",
            "postal_code": "546015429",
            "telephone_number": "608-782-7300"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "430 E Division St",
            "address_purpose": "LOCATION",
            "city": "Fond du Lac",
            "state": "WI",
            "postal_code": "549354560",
            "country_code": "US",
            "telephone_number": "715-235-5531",
            "fax_number": "715-233-7645",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "FOSTER",
        "first_name": "ALLEN",
        "middle_name": "C.",
        "credential": "MD",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-05-12",
        "last_updated": "2024-04-18",
        "certification_date": "2024-04-18",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "207RS0012X",
            "taxonomy_group": "",
            "desc": "Internal Medicine, Sleep Medicine",
            "state": "WI",
            "license": "38156-020",
            "primary": true
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "",
            "desc": "Internal Medicine",
            "state": "WI",
            "license": "38156-020",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "32286700",
            "state": "WI"
        }
    ],
    "endpoints": [
        {
            "endpointType": "FHIR",
            "endpointTypeDescription": "FHIR URL",
            "endpoint": "https://fhir.ssmhc.com/fhir/api/FHIR/DSTU2/",
            "affiliation": "N",
            "use": "OTHER",
            "useDescription": "Other",
            "useOtherDescription": "FHIR API",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "CCD",
            "address_1": "430 E Division St",
            "city": "Fond du Lac",
            "state": "WI",
            "country_code": "US",
            "postal_code": "549354560",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "afoster330002@direct-ehr-ssmhc.com",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "afoster330002@direct-ehr-ssmhc.com",
            "address_1": "430 E Division St",
            "city": "Fond du Lac",
            "state": "WI",
            "country_code": "US",
            "postal_code": "549354560",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "afoster870812@direct.gundersenhealth.org",
            "affiliation": "N",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "Direct",
            "address_1": "1836 South Ave",
            "city": "LA Crosse",
            "state": "WI",
            "country_code": "US",
            "postal_code": "546015429",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": [
        {
            "first_name": "ALLEN",
            "last_name": "ANDERSON",
            "middle_name": "C.",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

Other providers in La Crosse, WI

Sources for this page

Verify at the official NPI Registry.