STEVEN L WILLIAMSON
NPI 1205787959
Counselor - Addiction (Substance Use Disorder) in Southfield, MI

Q: What is Steven Williamson's NPI number?

The NPI number for Steven Williamson is 1205787959. It was assigned to this individual provider in the NPPES registry on February 9, 2026.

Q: What is Steven Williamson's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Addiction (Substance Use Disorder), with taxonomy code 101YA0400X.

Q: When was this NPI record last updated?

The NPPES record for Steven Williamson was last updated on February 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.

Active since February 09, 2026

24445 NORTHWESTERN HWY STE 222, SOUTHFIELD, MI 48075(313) 768-8440 Get Directions Write a Review

NPPES record last updated: February 9, 2026. Verified against the NPPES registry weekly; last sync: September 27, 2026.

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About Steven L Williamson NPPES

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

STEVEN L WILLIAMSON (NPI 1205787959) is an individual addiction (substance use disorder) provider in Southfield, Michigan and active in the NPI registry since February 2026.

NPPES Registry Identity

NPI1205787959

Entity TypeIndividualMale

Primary Taxonomy101YA0400X

Provider Legal NameSTEVEN L WILLIAMSON

Location Address24445 NORTHWESTERN HWY STE 222Southfield, MI 48075-6501

Mailing Address19135 Addison DrSouthfield, MI 48075-2404

Phone(313) 768-8440

Sole ProprietorYes

Enumeration DateFebruary 9, 2026

NPPES CertifiedFebruary 8, 2026

✔ NPI 1205787959 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Addiction (Substance Use Disorder)Behavioral Health & Social Service Providers

Taxonomy Code101YA0400X

24445 NORTHWESTERN HWY STE 222, Southfield, MI 48075

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Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

Other Providers at the Same Location NPPES 2

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

RELUMA SERVICES LLC

Community/Behavioral Health

24445 NORTHWESTERN HWY STE 222
SOUTHFIELD, MI 48075

Oakland County (248) 805-1029

DHARELE LEWIS

Social Worker (Clinical)

24445 NORTHWESTERN HWY STE 222
SOUTHFIELD, MI 48075

Oakland County (248) 745-4900

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 Steven Williamson's NPI number?

The NPI number for Steven Williamson is 1205787959. It was assigned to this individual provider in the NPPES registry on February 9, 2026.

Where is Steven Williamson located?

Steven Williamson practices at 24445 Northwestern Hwy Ste 222, Southfield, MI 48075. The listed phone number is (313) 768-8440.

What is Steven Williamson's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Addiction (Substance Use Disorder), with taxonomy code 101YA0400X.

When was this NPI record last updated?

The NPPES record for Steven Williamson was last updated on February 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.