Marcia Sage, LCSW
NPI 1043465818 · Clinical Social Worker · Greenwich, CT
Enrolled with Medicare as Order and Referring Only - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marcia Sage, LCSW is a Clinical Social Worker provider in Greenwich, CT (NPI 1043465818).
Provider details
- NPI number
- 1043465818
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- 004706 (CT)
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
17 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
- 2008-11-20
- Last updated
- 2012-09-27
Frequently asked questions
- What is Marcia Sage's NPI number?
- Marcia Sage's National Provider Identifier (NPI) is 1043465818, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marcia Sage's specialty?
- Marcia Sage is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Marcia Sage located?
- Marcia Sage's practice location on file with NPPES is 9 Benedict Pl, Greenwich, CT 06830-5309.
- What is Marcia Sage's phone number?
- The practice phone number listed in the NPPES registry for Marcia Sage is (203) 661-1009.
- Does Marcia Sage accept Medicare?
- Marcia Sage is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marcia Sage's NPI active?
- Yes — Marcia Sage's NPI (1043465818) is active in the NPPES registry as of the last update on 2012-09-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.