Mary Mastalerz, MSW
NPI 1487914594 · Clinical Social Worker · Springfield, MA
Mary Mastalerz, MSW is a Clinical Social Worker provider in Springfield, MA (NPI 1487914594).
Provider details
- NPI number
- 1487914594
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- MSW
- Sex
- Female
- Sole proprietor
- No
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
14 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2012-05-22
- Last updated
- 2012-05-22
Frequently asked questions
- What is Mary Mastalerz's NPI number?
- Mary Mastalerz's National Provider Identifier (NPI) is 1487914594, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Mastalerz's specialty?
- Mary Mastalerz is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Mary Mastalerz located?
- Mary Mastalerz's practice location on file with NPPES is 367 Pine St, Springfield, MA 01105-1930.
- What is Mary Mastalerz's phone number?
- The practice phone number listed in the NPPES registry for Mary Mastalerz is (413) 755-2600.
- Is Mary Mastalerz's NPI active?
- Yes — Mary Mastalerz's NPI (1487914594) is active in the NPPES registry as of the last update on 2012-05-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.