IndividualActive
Sandra Niedzwiecki, M.S.W.
NPI 1407118987 · Social Worker · Holliston, MA
Sandra Niedzwiecki, M.S.W. is a Social Worker provider in Holliston, MA (NPI 1407118987).
Provider details
- NPI number
- 1407118987
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Credential
- M.S.W.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 2030366 (MA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(79/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 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
84 Andrew Ln
Holliston, MA 01746-1500
Phone: (508) 429-5417
Fax: (508) 429-1919
Street-level locationGet directions
Mailing address
84 Andrew Ln
Holliston, MA 01746-1500
Registry dates
- Enumerated
- 2012-06-11
- Last updated
- 2012-06-11
Frequently asked questions
- What is Sandra Niedzwiecki's NPI number?
- Sandra Niedzwiecki's National Provider Identifier (NPI) is 1407118987, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sandra Niedzwiecki's specialty?
- Sandra Niedzwiecki is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Sandra Niedzwiecki located?
- Sandra Niedzwiecki's practice location on file with NPPES is 84 Andrew Ln, Holliston, MA 01746-1500.
- What is Sandra Niedzwiecki's phone number?
- The practice phone number listed in the NPPES registry for Sandra Niedzwiecki is (508) 429-5417.
- Is Sandra Niedzwiecki's NPI active?
- Yes — Sandra Niedzwiecki's NPI (1407118987) is active in the NPPES registry as of the last update on 2012-06-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.