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MS. GWENDOLYN JAYNE MARTELL-DANIELS LCSW, SAC
NPI 1891906889
Social Worker - Clinical in Merrill, WI

Active since May 24, 2007PECOS EnrolledAccepts Medicare Assignment
N2355 SMITH RD, MERRILL, WI 54452(715) 551-1970(715) 539-3580 Get Directions Write a Review

NPPES record last updated: February 3, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Ms. Gwendolyn Jayne Martell-daniels Lcsw, Sac NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MS. GWENDOLYN JAYNE MARTELL-DANIELS LCSW, SAC (NPI 1891906889) is an individual clinical provider in Merrill, Wisconsin, licensed in Wisconsin (125215) and active in the NPI registry since May 2007. She is enrolled in Medicare PECOS and is a graduate of Other (1998).

NPPES Registry Identity

NPI1891906889
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMS. GWENDOLYN JAYNE MARTELL-DANIELSCredential: LCSW, SAC
Location AddressN2355 SMITH RDMerrill, WI 54452-9453
Mailing AddressN2355 Smith RdMerrill, WI 54452-9453 · (715) 551-1970 · Fax (715) 539-3580
Phone(715) 551-1970
Fax(715) 539-3580
Sole ProprietorYes
Medical School CMSOtherGraduated 1998
Enumeration DateMay 24, 2007
Last NPPES UpdateFebruary 3, 2026
NPPES CertifiedFebruary 3, 2026
✔ NPI 1891906889 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in WI · 125215
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
Also ListedCounselor · Addiction (Substance Use Disorder)Taxonomy 101YA0400X · License 11275 (WI)
N2355 SMITH RD, Merrill, WI 54452
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Other Names 1

Former Name (1)Wendie Martell-williams Msw, Cadc

Other Identifiers 3

Medicaid40927200WI
Other39-1991697WI · Fed Tax Id
Other602114WI · State Tax Id

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Aspirus Health Plan, Medica and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Ms. Gwendolyn Jayne Martell-daniels Lcsw, Sac is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9638229677
PECOS Enrollment IDI20090611000743
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 54452 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$0.00 typical visit price
range $53.90 – $163.24
Typical copayment $0.00 (range $13.47 – $40.81)
Most-billed visit code NA
Established Patient
$67.37 typical visit price
range $17.40 – $133.76
Typical copayment $16.84 (range $4.35 – $33.44)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

VISIONS COUNSELING II, LLC
Community/Behavioral Health
N2355 SMITH RD
MERRILL, WI 54452
Lincoln County (715) 551-1970

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Gwendolyn Martell-daniels's NPI number?

The NPI number for Gwendolyn Martell-daniels is 1891906889. It was assigned to this individual provider in the NPPES registry on May 24, 2007. The provider is also known as Wendie Martell-Williams Msw, Cadc.

Where is Gwendolyn Martell-daniels located?

Gwendolyn Martell-daniels practices at N2355 Smith Rd, Merrill, WI 54452. The listed phone number is (715) 551-1970.

What is Gwendolyn Martell-daniels's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

Is Gwendolyn Martell-daniels enrolled in Medicare?

Yes. Gwendolyn Martell-daniels is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Gwendolyn Martell-daniels accept?

Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, Medica and UnitedHealthcare list Gwendolyn Martell-daniels as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Gwendolyn Martell-daniels was last updated on February 3, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.