Mark Johnson
NPI 1740761881 · Addiction (Substance Use Disorder) Counselor · Westchester, IL
Mark Johnson is a Addiction (Substance Use Disorder) Counselor provider in Westchester, IL (NPI 1740761881).
Provider details
- NPI number
- 1740761881
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- 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
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
Mailing address
Registry dates
- Enumerated
- 2018-08-27
- Last updated
- 2018-08-27
Frequently asked questions
- What is Mark Johnson's NPI number?
- Mark Johnson's National Provider Identifier (NPI) is 1740761881, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Johnson's specialty?
- Mark Johnson is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Mark Johnson located?
- Mark Johnson's practice location on file with NPPES is 9845 W Roosevelt Rd, Westchester, IL 60154-2758.
- What is Mark Johnson's phone number?
- The practice phone number listed in the NPPES registry for Mark Johnson is (708) 681-2325.
- Is Mark Johnson's NPI active?
- Yes — Mark Johnson's NPI (1740761881) is active in the NPPES registry as of the last update on 2018-08-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.