Newly Listed Provider — this NPI profile has been added to the NPI registry within the last 90 days.

DR. CONSTANCE Y WILLIAMS PHD
NPI 1417852161
Counselor - Mental Health in Chicago, IL

Q: What is Constance Williams's NPI number?

The NPI number for Constance Williams is 1417852161. It was assigned to this individual provider in the NPPES registry on October 13, 2026.

Q: What is Constance Williams's specialty?

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

Active since October 13, 2026

21 W CHESTNUT ST APT 1208, CHICAGO, IL 60610(312) 618-1980 Get Directions Write a Review

NPPES record added: October 13, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

On this page

About Dr. Constance Y Williams Phd NPPES

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

DR. CONSTANCE Y WILLIAMS PHD (NPI 1417852161) is an individual mental health provider in Chicago, Illinois, licensed in Illinois (180005276) and active in the NPI registry since October 2026.

NPPES Registry Identity

NPI1417852161

Entity TypeIndividualFemale

Primary Taxonomy101YM0800X

Provider Legal NameDR. CONSTANCE Y WILLIAMSCredential: PHD

Location Address21 W CHESTNUT ST APT 1208Chicago, IL 60610-3372

Mailing Address21 W Chestnut St Apt 1208Chicago, IL 60610-3372 · (312) 618-1980

Phone(312) 618-1980

Sole ProprietorYes

Enumeration DateOctober 13, 2026

NPPES CertifiedOctober 12, 2026

✔ NPI 1417852161 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 IL · 180005276

21 W CHESTNUT ST APT 1208, Chicago, IL 60610

Open in Google Maps ↗

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 Constance Williams's NPI number?

The NPI number for Constance Williams is 1417852161. It was assigned to this individual provider in the NPPES registry on October 13, 2026.

Where is Constance Williams located?

Constance Williams practices at 21 W Chestnut St Apt 1208, Chicago, IL 60610. The listed phone number is (312) 618-1980.

What is Constance Williams's specialty?

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

When was this NPI record last updated?

The NPPES record for Constance Williams was last updated on October 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 days 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.