IndividualActive
William Mackenzie
NPI 1588121255 · Social Worker · Mchenry, IL
William Mackenzie is a Social Worker provider in Mchenry, IL (NPI 1588121255).
Provider details
- NPI number
- 1588121255
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(60/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 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
4031 W Dayton St
Mchenry, IL 60050-8377
Phone: (815) 344-1230
Street-level locationGet directions
Mailing address
4031 W Dayton St
Mchenry, IL 60050-8377
Registry dates
- Enumerated
- 2019-02-28
- Last updated
- 2019-02-28
Frequently asked questions
- What is William Mackenzie's NPI number?
- William Mackenzie's National Provider Identifier (NPI) is 1588121255, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Mackenzie's specialty?
- William Mackenzie is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is William Mackenzie located?
- William Mackenzie's practice location on file with NPPES is 4031 W Dayton St, Mchenry, IL 60050-8377.
- What is William Mackenzie's phone number?
- The practice phone number listed in the NPPES registry for William Mackenzie is (815) 344-1230.
- Is William Mackenzie's NPI active?
- Yes — William Mackenzie's NPI (1588121255) is active in the NPPES registry as of the last update on 2019-02-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.