William J Affeldt, MSSW LICSW

Primary specialty

Clinical Social WorkerTaxonomy code 1041C0700X

License

4248 Issued in MN

Practice address

310 Railroad Ave
Walker, MN 56484

Phone

(218) 675-9170

Fax

(320) 639-0014

NPI assigned

Jun 14, 2006

Last updated

Jan 27, 2026By the provider in NPPES

Sex

Male

Sole proprietor

No

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

Specialties & licenses 2

Addresses

Other identifiers 5

Electronic endpoints 1

Medicare fee-for-service enrollment

Enrolled in MN

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: No
• Power mobility devices: No
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Clinical Social Worker

Education

Other, 1986

Medicare assignment

May accept Medicare assignment

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: waffeldt89500@direct.northmemorial.com

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.

• Northern Pines Mental Health Center, Inc.

  • Mental Health Clinic/Center (Including Community Mental Health Center)
  • Little Falls, MN
  • NPI 1013904051
  NPD
• Northern Pines Mental Health Center, Inc.

  • Community/Behavioral Health Agency
  • Brainerd, MN
  • NPI 1225168602
  NPD (past)

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

{
    "created_epoch": "1150243200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1769472000000",
    "number": "1013950203",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "310 RAILROAD AVE",
            "city": "WALKER",
            "state": "MN",
            "postal_code": "56484",
            "telephone_number": "218-675-9170",
            "fax_number": "320-639-0014"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "310 RAILROAD AVE",
            "city": "WALKER",
            "state": "MN",
            "postal_code": "56484",
            "telephone_number": "218-675-9170",
            "fax_number": "320-639-0014"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "AFFELDT",
        "first_name": "WILLIAM",
        "middle_name": "J",
        "name_prefix": "Mr.",
        "credential": "MSSW  LICSW",
        "sole_proprietor": "NO",
        "sex": "M",
        "enumeration_date": "2006-06-14",
        "last_updated": "2026-01-27",
        "certification_date": "2026-01-27",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "104100000X",
            "taxonomy_group": "",
            "desc": "Social Worker",
            "state": "MN",
            "license": "4248",
            "primary": false
        },
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "MN",
            "license": "4248",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "970757300",
            "state": "MN"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "HEALTH PARTNERS",
            "identifier": "HP27808",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "MEDICA",
            "identifier": "6248959",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "PREFERRED ONE",
            "identifier": "922241007835",
            "state": null
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "UCARE",
            "identifier": "110573C851",
            "state": null
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "waffeldt89500@direct.northmemorial.com",
            "affiliation": "N",
            "address_1": "1001 Hart Blvd Ste 100",
            "city": "Monticello",
            "state": "MN",
            "country_code": "US",
            "postal_code": "553628929",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

• Ah Gwah Ching Center (State of Minnesota)
• Ah-Gwah-Ching Center
• Tricia Bastian
• Steven Edward Bilben, DDS
• Cass County MN (Cass County Public Health)

• Clinical Social Worker in Walker, MN
• Providers in Walker, MN by specialty
• Clinical Social Worker in Minnesota

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jan 27, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.