Gwendolyn Jayne Martell-Daniels, LCSW, SAC

Primary specialty

Clinical Social WorkerTaxonomy code 1041C0700X

License

125215 Issued in WI

Practice address

N2355 Smith Rd
Merrill, WI 54452-9453

Phone

(715) 551-1970

Fax

(715) 539-3580

NPI assigned

May 24, 2007

Last updated

Sep 29, 2026By the provider in NPPES

Sex

Female

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 3

Other names 1

• Wendie Martell-Williams Former name

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, 1998

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

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.

• Visions Counseling Inc

  • Clinical Social Worker
  • Merrill, WI
  • NPI 1336324433
  Medicare reassignment NPD
• Visions Counseling II, LLC

  • Community/Behavioral Health Agency
  • Merrill, WI
  • NPI 1184047227
  NPD (past)

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

{
    "created_epoch": "1179964800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1790640000000",
    "number": "1891906889",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "N2355 SMITH RD",
            "city": "MERRILL",
            "state": "WI",
            "postal_code": "544529453",
            "telephone_number": "715-551-1970",
            "fax_number": "715-539-3580"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "N2355 SMITH RD",
            "city": "MERRILL",
            "state": "WI",
            "postal_code": "544529453",
            "telephone_number": "715-551-1970",
            "fax_number": "715-539-3580"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "MARTELL-DANIELS",
        "first_name": "GWENDOLYN",
        "middle_name": "JAYNE",
        "name_prefix": "Ms.",
        "credential": "LCSW, SAC",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2007-05-24",
        "last_updated": "2026-09-29",
        "certification_date": "2026-02-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "101YA0400X",
            "taxonomy_group": "",
            "desc": "Counselor, Addiction (Substance Use Disorder)",
            "state": "WI",
            "license": "11275",
            "primary": false
        },
        {
            "code": "1041C0700X",
            "taxonomy_group": "",
            "desc": "Social Worker, Clinical",
            "state": "WI",
            "license": "125215",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "05",
            "desc": "MEDICAID",
            "issuer": null,
            "identifier": "40927200",
            "state": "WI"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "STATE TAX ID",
            "identifier": "602114",
            "state": "WI"
        },
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "FED TAX ID",
            "identifier": "39-1991697",
            "state": "WI"
        }
    ],
    "endpoints": [],
    "other_names": [
        {
            "first_name": "WENDIE",
            "last_name": "MARTELL-WILLIAMS",
            "credential": "MSW, CADC",
            "code": "1",
            "type": "Former Name"
        }
    ]
}

• Cassie Littlejohn, DPT
• Edward Long
• Adam Manteuffel, D.D.S.
• Matthew K Marine, D.C.
• Arthur Marquis, MD
• Kelly Martello
• Michael David Mathson, PHYSICAL THERAPIST
• MCHS Hospitals Inc (INACTIVE Marshfield Clinic Merrill Eye Center (DME))
• MCHS Hospitals Inc (Marshfield Clinic Dispensing)
• MCHS Hospitals Inc (Marshfield Clinic Merrill Center)

• Clinical Social Worker in Merrill, WI
• Providers in Merrill, 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 29, 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.