IndividualActive
William Mills, LCSW
NPI 1801296892 · Clinical Social Worker · Chicago, IL
William Mills, LCSW is a Clinical Social Worker provider in Chicago, IL (NPI 1801296892).
Provider details
- NPI number
- 1801296892
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- 149012993 (IL)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(75/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 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.
Practice location
5615 N Winthrop Ave
Apt 2f
Chicago, IL 60660-4425
Phone: (773) 613-9261
Street-level locationGet directions
Mailing address
5615 N Winthrop Ave
Chicago, IL 60660-4425
Registry dates
- Enumerated
- 2014-08-27
- Last updated
- 2014-08-27
Frequently asked questions
- What is William Mills's NPI number?
- William Mills's National Provider Identifier (NPI) is 1801296892, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Mills's specialty?
- William Mills is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is William Mills located?
- William Mills's practice location on file with NPPES is 5615 N Winthrop Ave, Chicago, IL 60660-4425.
- What is William Mills's phone number?
- The practice phone number listed in the NPPES registry for William Mills is (773) 613-9261.
- Is William Mills's NPI active?
- Yes — William Mills's NPI (1801296892) is active in the NPPES registry as of the last update on 2014-08-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.