David Francis Timmer, M.S.W.

Primary specialty

Clinical Social WorkerTaxonomy code 1041C0700X

License

1722 123 Issued in WI

Practice address

5300 S 108TH St
12B
Hales Corners, WI 53130-1368

Phone

(414) 529-2591

Fax

(414) 529-2669

NPI assigned

Aug 24, 2006

Sex

Male

Sole proprietor

Yes

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

Specialties & licenses 2

Addresses

Other identifiers 1

Medicare fee-for-service enrollment

Enrolled in WI

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, 1989

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Group practices

Trillium Care Group LLCGroup PAC ID 7618935529, 4 clinicians

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

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.

• Trillium Care Group LLC

  • Psychologist
  • Elm Grove, WI
  • NPI 1477629640
  Medicare reassignment Care Compare group

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

{
    "created_epoch": "1156377600000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1757548800000",
    "number": "1639286552",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5300 S 108TH ST",
            "address_2": "12B",
            "city": "HALES CORNERS",
            "state": "WI",
            "postal_code": "531301368",
            "telephone_number": "414-529-2591",
            "fax_number": "414-529-2669"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5300 S 108TH ST",
            "address_2": "12B",
            "city": "HALES CORNERS",
            "state": "WI",
            "postal_code": "531301368",
            "telephone_number": "414-529-2591",
            "fax_number": "414-529-2669"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "TIMMER",
        "first_name": "DAVID",
        "middle_name": "FRANCIS",
        "name_prefix": "Mr.",
        "credential": "M.S.W.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2006-08-24",
        "last_updated": "2025-09-11",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "WI",
            "license": "1722 123",
            "primary": true
        },
        {
            "code": "106H00000X",
            "taxonomy_group": "",
            "desc": "Marriage & Family Therapist",
            "state": "WI",
            "license": "284 124",
            "primary": false
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "39653900",
            "state": "WI"
        }
    ],
    "endpoints": [],
    "other_names": []
}

• Symetria Health of Wisconsin, L.L.C.
• Andrew Telschow, DPT
• Jacob Tenlen, DPT
• The Color of Therapy LLC
• Thomas E. Raimann DDS
• Jennifer Marie Tralongo, OTR
• Susan Tubic
• Cassandra Ann Van Kleunen, D.D.S.
• Sandra M Vandomelen, SAC-IT
• Jordan Vandyck, DPT

• Clinical Social Worker in Hales Corners, WI
• Providers in Hales Corners, WI by specialty
• Clinical Social Worker in Wisconsin

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 11, 2025; 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.