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Rex Fields, LCSW
NPI 1427901818 · Clinical Social Worker · Chicago, IL
Rex Fields, LCSW is a Clinical Social Worker provider in Chicago, IL (NPI 1427901818).
Provider details
- NPI number
- 1427901818
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- 149-027664 (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
1138 S Mason Ave
Chicago, IL 60644-5395
Phone: (773) 351-8033
Street-level locationGet directions
Mailing address
Po Box 1675
Oak Park, IL 60304-0602
Registry dates
- Enumerated
- 2026-02-17
- Last updated
- 2026-02-17
- Certified
- 2026-02-17
Frequently asked questions
- What is Rex Fields's NPI number?
- Rex Fields's National Provider Identifier (NPI) is 1427901818, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Rex Fields's specialty?
- Rex Fields is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Rex Fields located?
- Rex Fields's practice location on file with NPPES is 1138 S Mason Ave, Chicago, IL 60644-5395.
- What is Rex Fields's phone number?
- The practice phone number listed in the NPPES registry for Rex Fields is (773) 351-8033.
- Is Rex Fields's NPI active?
- Yes — Rex Fields's NPI (1427901818) is active in the NPPES registry as of the last update on 2026-02-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.