Marguerite Grier, MWS LWS
NPI 1134392731 · Addiction (Substance Use Disorder) Counselor · Pittsburgh, PA
Marguerite Grier, MWS LWS is a Addiction (Substance Use Disorder) Counselor provider in Pittsburgh, PA (NPI 1134392731).
Provider details
- NPI number
- 1134392731
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- MWS LWS
- Sex
- Female
- Sole proprietor
- Yes
- License
- SW011263L (PA)
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
- 2008-04-04
- Last updated
- 2008-04-04
Frequently asked questions
- What is Marguerite Grier's NPI number?
- Marguerite Grier's National Provider Identifier (NPI) is 1134392731, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marguerite Grier's specialty?
- Marguerite Grier is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Marguerite Grier located?
- Marguerite Grier's practice location on file with NPPES is 3501 Forbes Ave, Pittsburgh, PA 15213-3317.
- What is Marguerite Grier's phone number?
- The practice phone number listed in the NPPES registry for Marguerite Grier is (412) 605-1902.
- Is Marguerite Grier's NPI active?
- Yes — Marguerite Grier's NPI (1134392731) is active in the NPPES registry as of the last update on 2008-04-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.