William Schwartz, LCSW
NPI 1447865423 · Clinical Social Worker · Holyoke, MA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Schwartz, LCSW is a Clinical Social Worker provider in Holyoke, MA (NPI 1447865423).
Provider details
- NPI number
- 1447865423
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 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
- 2020-09-15
- Last updated
- 2022-08-30
- Certified
- 2022-08-30
Frequently asked questions
- What is William Schwartz's NPI number?
- William Schwartz's National Provider Identifier (NPI) is 1447865423, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Schwartz's specialty?
- William Schwartz is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is William Schwartz located?
- William Schwartz's practice location on file with NPPES is 303 Beech St, Holyoke, MA 01040-3968.
- What is William Schwartz's phone number?
- The practice phone number listed in the NPPES registry for William Schwartz is (413) 377-6363.
- Does William Schwartz accept Medicare?
- William Schwartz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Schwartz's NPI active?
- Yes — William Schwartz's NPI (1447865423) is active in the NPPES registry as of the last update on 2022-08-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.