Margaret Mercer, LCSW
NPI 1508001934 · Clinical Social Worker · Portland, ME
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Mercer, LCSW is a Clinical Social Worker provider in Portland, ME (NPI 1508001934).
Provider details
- NPI number
- 1508001934
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- No
- License
- CSW-1190 (CO)
Specialties & taxonomies
Behavioral Health & Social Service Providers
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
17 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 2950 Tennyson StDenver, CO 80212-3029Phone: (720) 588-3324
Registry dates
- Enumerated
- 2008-12-15
- Last updated
- 2025-05-05
- Certified
- 2025-05-05
Frequently asked questions
- What is Margaret Mercer's NPI number?
- Margaret Mercer's National Provider Identifier (NPI) is 1508001934, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Mercer's specialty?
- Margaret Mercer is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Margaret Mercer located?
- Margaret Mercer's practice location on file with NPPES is 22 Bramhall St, Portland, ME 04102-3134.
- What is Margaret Mercer's phone number?
- The practice phone number listed in the NPPES registry for Margaret Mercer is (207) 662-2911.
- Does Margaret Mercer accept Medicare?
- Margaret Mercer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Mercer's NPI active?
- Yes — Margaret Mercer's NPI (1508001934) is active in the NPPES registry as of the last update on 2025-05-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.