William Johnston, MSW, ACSW, LCSW
NPI 1528145414 · Clinical Social Worker · Watseka, IL
William Johnston, MSW, ACSW, LCSW is a Clinical Social Worker provider in Watseka, IL (NPI 1528145414).
Provider details
- NPI number
- 1528145414
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- MSW, ACSW, LCSW
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
83% 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
Mailing address
Registry dates
- Enumerated
- 2006-10-31
- Last updated
- 2007-07-08
Frequently asked questions
- What is William Johnston's NPI number?
- William Johnston's National Provider Identifier (NPI) is 1528145414, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Johnston's specialty?
- William Johnston is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is William Johnston located?
- William Johnston's practice location on file with NPPES is 323 W Mulberry St, Watseka, IL 60970-1568.
- What is William Johnston's phone number?
- The practice phone number listed in the NPPES registry for William Johnston is (815) 432-5241.
- Is William Johnston's NPI active?
- Yes — William Johnston's NPI (1528145414) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.