What is Katherine Williams's NPI number?

Katherine Williams's National Provider Identifier (NPI) is 1003351222, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Katherine Williams's specialty?

Katherine Williams is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).

Where is Katherine Williams located?

Katherine Williams's practice location on file with NPPES is 122 S Michigan Ave, Chicago, IL 60603-6191.

What is Katherine Williams's phone number?

The practice phone number listed in the NPPES registry for Katherine Williams is (630) 299-9537.

Is Katherine Williams's NPI active?

Yes — Katherine Williams's NPI (1003351222) is active in the NPPES registry as of the last update on 2016-12-23.

IndividualActive

Katherine Williams, LCSW

NPI 1003351222 · Clinical Social Worker · Chicago, IL

Katherine Williams, LCSW is a Clinical Social Worker provider in Chicago, IL (NPI 1003351222).

Provider details

NPI number: 1003351222
Entity type: Individual
Primary specialty: Clinical Social WorkerBehavioral Health & Social Service Providers
Credential: LCSW
Sex: Female
Sole proprietor: Yes
License: 149019046 (IL)

Practice location

122 S Michigan Ave

Suite 1307d

Chicago, IL 60603-6191

Phone: (630) 299-9537

Street-level locationGet directions

More IL providers

Mailing address

612 Maves Dr

Batavia, IL 60510-4304

Specialties & taxonomies

Clinical Social WorkerPrimary1041C0700XLicense 149019046 (IL)
Behavioral Health & Social Service Providers

Profile Score

Established profile(71/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
9 yrs in NPPES registry
Profile completeness38% of score
100% of core fields populated
Practice footprint23% of score
1 documented practice location

Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

Enumerated: 2016-12-23
Last updated: 2016-12-23

Frequently asked questions

What is Katherine Williams's NPI number?: Katherine Williams's National Provider Identifier (NPI) is 1003351222, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Katherine Williams's specialty?: Katherine Williams is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
Where is Katherine Williams located?: Katherine Williams's practice location on file with NPPES is 122 S Michigan Ave, Chicago, IL 60603-6191.
What is Katherine Williams's phone number?: The practice phone number listed in the NPPES registry for Katherine Williams is (630) 299-9537.
Is Katherine Williams's NPI active?: Yes — Katherine Williams's NPI (1003351222) is active in the NPPES registry as of the last update on 2016-12-23.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions