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MATTHEW M WILLIAMS
NPI 1538622147
Counselor - Mental Health in Oxford, MS

Active since April 10, 2019PECOS Enrolled
304 ENTERPRISE DR STE A, OXFORD, MS 38655(662) 638-3026 Get Directions Write a Review

NPPES record last updated: August 18, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Matthew M Williams NPPES

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

MATTHEW M WILLIAMS (NPI 1538622147) is an individual mental health provider in Oxford, Mississippi, licensed in Mississippi (P-0296) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS and maintains a secondary practice location in Tupelo.

NPPES Registry Identity

NPI1538622147
Entity TypeIndividualMale
Primary Taxonomy101YM0800X
Provider Legal NameMATTHEW M WILLIAMS
Location Address304 ENTERPRISE DR STE AOxford, MS 38655-2762
Mailing Address146 S Thomas St Ste CTupelo, MS 38801-5328 · (662) 840-0974 · Fax (662) 840-0388
Phone(662) 638-3026
Sole ProprietorNo
Enumeration DateApril 10, 2019
Last NPPES UpdateAugust 18, 2025
NPPES CertifiedAugust 18, 2025
✔ NPI 1538622147 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers
Taxonomy Code101YM0800X
License✔ Licensed in MS · P-0296
304 ENTERPRISE DR STE A, Oxford, MS 38655
Open in Google Maps ↗

Secondary Practice Location 1

Location 1146 S Thomas St Ste CTupelo, MS 38801-5328 · Phone (662) 840-0974 · Fax (662) 840-0388

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Matthew M Williams 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.

Medicare Billing Reassignment

Medicare enrollment records show Matthew Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Rh Arise Venture Of Tupelo LLC
42 mi
Psychiatry
777 HOLLY HILL DR
Tupelo, MS 38801
  • Reassigned Medicare billing, Mississippi enrollment
  • 12 clinicians in this Medicare group
NPI 1124776067 (662) 432-1221

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Other Providers at the Same Location NPPES 6

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

DAVIS ABRAHAM LPC
Counselor
304 ENTERPRISE DR STE A
OXFORD, MS 38655
Lafayette County (662) 638-3026
MR. NATHAN CAMPBELL BEST SR. LPC
Counselor (Mental Health)
304 ENTERPRISE DR STE A
OXFORD, MS 38655
Lafayette County (662) 638-3026
KIMBERLY MICHELLE JACOBS LPC
Counselor (Professional)
304 ENTERPRISE DR STE A
OXFORD, MS 38655
Lafayette County (662) 638-3026
OXFORD MENTAL HEALTH SERVICES, LLC
Clinic/Center (Mental Health (Including Community Mental Health Center))
304 ENTERPRISE DR STE A
OXFORD, MS 38655
Lafayette County (662) 638-3026
DR. KEON D STEWART PHD, LPC, NCC,BC-TMH
Counselor (Mental Health)
304 ENTERPRISE DR STE A
OXFORD, MS 38655
Lafayette County (662) 638-3026
CARISSA CHANDLER LPC
Counselor (Professional)
304 ENTERPRISE DR STE A
OXFORD, MS 38655
Lafayette County (662) 638-3026

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 Matthew Williams's NPI number?

The NPI number for Matthew Williams is 1538622147. It was assigned to this individual provider in the NPPES registry on April 10, 2019.

Where is Matthew Williams located?

Matthew Williams practices at 304 Enterprise Dr Ste A, Oxford, MS 38655. The listed phone number is (662) 638-3026.

What is Matthew Williams's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

Is Matthew Williams enrolled in Medicare?

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

Which organization bills Medicare for Matthew Williams's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Matthew Williams reassigns Medicare benefits to Rh Arise Venture Of Tupelo LLC (Tupelo, MS). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Matthew Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Matthew Williams accept?

Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter of Alabama and Ambetter of Tennessee and 3 other insurers list Matthew 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 Matthew Williams was last updated on August 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.