IndividualActive
Mari Horowitz, LCSW
NPI 1578423364 · Clinical Social Worker · Chicago, IL
Mari Horowitz, LCSW is a Clinical Social Worker provider in Chicago, IL (NPI 1578423364).
Provider details
- NPI number
- 1578423364
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- No
- License
- 149.029764 (IL)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(53/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in 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
150 E Huron St Fl 13
Chicago, IL 60611-2999
Phone: (866) 760-8876
Street-level locationGet directions
Mailing address
150 E Huron St Fl 13
Chicago, IL 60611-2999
Registry dates
- Enumerated
- 2025-11-13
- Last updated
- 2025-11-13
- Certified
- 2025-11-13
Frequently asked questions
- What is Mari Horowitz's NPI number?
- Mari Horowitz's National Provider Identifier (NPI) is 1578423364, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mari Horowitz's specialty?
- Mari Horowitz is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Mari Horowitz located?
- Mari Horowitz's practice location on file with NPPES is 150 E Huron St Fl 13, Chicago, IL 60611-2999.
- What is Mari Horowitz's phone number?
- The practice phone number listed in the NPPES registry for Mari Horowitz is (866) 760-8876.
- Is Mari Horowitz's NPI active?
- Yes — Mari Horowitz's NPI (1578423364) is active in the NPPES registry as of the last update on 2025-11-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.