Chelsea Brennan, MSW, LCSW
NPI 1285459453 · Clinical Social Worker · Thornton, CO
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chelsea Brennan, MSW, LCSW is a Clinical Social Worker provider in Thornton, CO (NPI 1285459453).
Provider details
- NPI number
- 1285459453
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- MSW, LCSW
- Sex
- Female
- Sole proprietor
- No
- License
- CSW.09931094 (CO)
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
1 yr 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
- 2024-11-21
- Last updated
- 2025-02-24
- Certified
- 2025-02-24
Frequently asked questions
- What is Chelsea Brennan's NPI number?
- Chelsea Brennan's National Provider Identifier (NPI) is 1285459453, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chelsea Brennan's specialty?
- Chelsea Brennan is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Chelsea Brennan located?
- Chelsea Brennan's practice location on file with NPPES is 8931 Huron St, Thornton, CO 80260-6806.
- What is Chelsea Brennan's phone number?
- The practice phone number listed in the NPPES registry for Chelsea Brennan is (303) 853-3500.
- Does Chelsea Brennan accept Medicare?
- Chelsea Brennan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chelsea Brennan's NPI active?
- Yes — Chelsea Brennan's NPI (1285459453) is active in the NPPES registry as of the last update on 2025-02-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.