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MARK WILLIAMS
NPI 1215522602
Counselor - Addiction (Substance Use Disorder) in Chicago, IL

Active since March 08, 2021
200 W MONROE ST STE 1150, CHICAGO, IL 60606(314) 369-8849 Get Directions Write a Review

NPPES record last updated: March 8, 2021. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Mark Williams NPPES

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

MARK WILLIAMS (NPI 1215522602) is an individual addiction (substance use disorder) provider in Chicago, Illinois, licensed in Illinois (26701) and active in the NPI registry since March 2021.

NPPES Registry Identity

NPI1215522602
Entity TypeIndividualMale
Primary Taxonomy101YA0400X
Provider Legal NameMARK WILLIAMS
Location Address200 W MONROE ST STE 1150Chicago, IL 60606-5036
Mailing Address200 W Monroe St Ste 1150Chicago, IL 60606-5036 · (314) 369-8849
Phone(314) 369-8849
Sole ProprietorNo
Enumeration DateMarch 8, 2021
NPPES CertifiedFebruary 16, 2021
✔ NPI 1215522602 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
License✔ Licensed in IL · 26701
200 W MONROE ST STE 1150, Chicago, IL 60606
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Other Providers at the Same Location NPPES 8

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

CAROLYN BLOOM
Counselor (Addiction (Substance Use Disorder))
200 W MONROE ST STE 1150
CHICAGO, IL 60606
Cook County (314) 369-8849
CENTER FOR HOUSING AND HEALTH
Clinic/Center (Adult Mental Health)
200 W MONROE ST STE 1150
CHICAGO, IL 60606
Cook County (312) 334-0949
FAYZA ABUJADO
Counselor (Mental Health)
200 W MONROE ST STE 1150
CHICAGO, IL 60606
Cook County (312) 242-2312
NICK STARKEY
Counselor
200 W MONROE ST STE 1150
CHICAGO, IL 60606
Cook County (314) 369-8849
AIDS FOUNDATION OF CHICAGO
Clinic/Center (Adult Mental Health)
200 W MONROE ST STE 1150
CHICAGO, IL 60606
Cook County (312) 922-2322
JAMIE HOCK LCSW
Social Worker (Clinical)
200 W MONROE ST STE 1150
CHICAGO, IL 60606
Cook County (312) 922-2322
JESSIE BEEBE LCSW
Social Worker (Clinical)
200 W MONROE ST STE 1150
CHICAGO, IL 60606
Cook County (312) 922-2322
CHIAYU MCGILL
Case Manager/Care Coordinator
200 W MONROE ST STE 1150
CHICAGO, IL 60606
Cook County (314) 369-8849

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 Mark Williams's NPI number?

The NPI number for Mark Williams is 1215522602. It was assigned to this individual provider in the NPPES registry on March 8, 2021.

Where is Mark Williams located?

Mark Williams practices at 200 W Monroe St Ste 1150, Chicago, IL 60606. The listed phone number is (314) 369-8849.

What is Mark Williams'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 Mark Williams was last updated on March 8, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 years 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.