John O'Neill, MSW, LICSW
NPI 1336421395 · Clinical Social Worker · West Springfield, MA
John O'Neill, MSW, LICSW is a Clinical Social Worker provider in West Springfield, MA (NPI 1336421395).
Provider details
- NPI number
- 1336421395
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- MSW, LICSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- 119129 (MA)
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
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
- 2011-09-15
- Last updated
- 2018-03-01
Frequently asked questions
- What is John O'Neill's NPI number?
- John O'Neill's National Provider Identifier (NPI) is 1336421395, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John O'Neill's specialty?
- John O'Neill is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is John O'Neill located?
- John O'Neill's practice location on file with NPPES is 103 Myron Street Suite a, West Springfield, MA 01089.
- What is John O'Neill's phone number?
- The practice phone number listed in the NPPES registry for John O'Neill is (413) 592-1980.
- Is John O'Neill's NPI active?
- Yes — John O'Neill's NPI (1336421395) is active in the NPPES registry as of the last update on 2018-03-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.