Thomas Irwin, MSW, LCSW
NPI 1538353230 · Clinical Social Worker · Saint Louis, MO
Thomas Irwin, MSW, LCSW is a Clinical Social Worker provider in Saint Louis, MO (NPI 1538353230).
Provider details
- NPI number
- 1538353230
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- MSW, LCSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- SW000194 (MO)
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
18 yrs in NPPES 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
Mailing address
Registry dates
- Enumerated
- 2007-09-05
- Last updated
- 2010-10-26
Frequently asked questions
- What is Thomas Irwin's NPI number?
- Thomas Irwin's National Provider Identifier (NPI) is 1538353230, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Thomas Irwin's specialty?
- Thomas Irwin is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Thomas Irwin located?
- Thomas Irwin's practice location on file with NPPES is 462 N Taylor Ave, Saint Louis, MO 63108-1831.
- What is Thomas Irwin's phone number?
- The practice phone number listed in the NPPES registry for Thomas Irwin is (314) 531-8879.
- Is Thomas Irwin's NPI active?
- Yes — Thomas Irwin's NPI (1538353230) is active in the NPPES registry as of the last update on 2010-10-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.