Grant Underhill, LCSW
NPI 1053982579 · Clinical Social Worker · Saint Louis, MO
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Grant Underhill, LCSW is a Clinical Social Worker provider in Saint Louis, MO (NPI 1053982579).
Provider details
- NPI number
- 1053982579
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- No
- License
- 2023041447 (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
4 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
- 2021-07-06
- Last updated
- 2026-04-16
- Certified
- 2026-04-16
Frequently asked questions
- What is Grant Underhill's NPI number?
- Grant Underhill's National Provider Identifier (NPI) is 1053982579, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Grant Underhill's specialty?
- Grant Underhill is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Grant Underhill located?
- Grant Underhill's practice location on file with NPPES is 1001 Lynch St, Saint Louis, MO 63118-1818.
- What is Grant Underhill's phone number?
- The practice phone number listed in the NPPES registry for Grant Underhill is (314) 535-5600.
- Does Grant Underhill accept Medicare?
- Grant Underhill is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Grant Underhill's NPI active?
- Yes — Grant Underhill's NPI (1053982579) is active in the NPPES registry as of the last update on 2026-04-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.