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MRS. MELISSA LYNN WILLIAMS LMSW
NPI 1649886607
Social Worker - Clinical in Mattawan, MI

Active since September 16, 2020PECOS Enrolled
41221 CHICKADEE ST, MATTAWAN, MI 49071(269) 341-8888 Get Directions Write a Review

NPPES record last updated: July 10, 2025. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 10, 2025, Oct 21, 2020, Sep 30, 2020 and 1 more (4 updates tracked since 2020).

About Mrs. Melissa Lynn Williams Lmsw NPPES

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

MRS. MELISSA LYNN WILLIAMS LMSW (NPI 1649886607) is an individual clinical provider in Mattawan, Michigan, licensed in Michigan (6801092703) and active in the NPI registry since September 2020. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1649886607
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMRS. MELISSA LYNN WILLIAMSCredential: LMSW
Location Address41221 CHICKADEE STMattawan, MI 49071-9789
Mailing Address41221 Chickadee StMattawan, MI 49071-9789 · (616) 706-0961
Phone(269) 341-8888
Sole ProprietorNo
Enumeration DateSeptember 16, 2020
Last NPPES UpdateJuly 10, 20254 updates tracked since enumeration
NPPES CertifiedJuly 10, 2025
✔ NPI 1649886607 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in MI · 6801092703
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.
41221 CHICKADEE ST, Mattawan, MI 49071
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Insurance Company, UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mrs. Melissa Lynn Williams Lmsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 49071 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 $54.34 – $166.68
Typical copayment $0.00 (range $13.58 – $41.67)
Most-billed visit code NA
Established Patient
$68.07 typical visit price
range $17.09 – $135.40
Typical copayment $17.01 (range $4.27 – $33.85)
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.

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 Melissa Williams's NPI number?

The NPI number for Melissa Williams is 1649886607. It was assigned to this individual provider in the NPPES registry on September 16, 2020.

Where is Melissa Williams located?

Melissa Williams practices at 41221 Chickadee St, Mattawan, MI 49071. The listed phone number is (269) 341-8888.

What is Melissa Williams's specialty?

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

Is Melissa Williams enrolled in Medicare?

Yes. Melissa Williams is registered in the Medicare PECOS enrollment system.

What insurance does Melissa Williams accept?

Health plans from Oscar Insurance Company and UnitedHealthcare list Melissa Williams 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 Melissa Williams was last updated on July 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.