John Dzwonar, LMSW
NPI 1619142965 · Social Worker · New York, NY
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Dzwonar, LMSW is a Social Worker provider in New York, NY (NPI 1619142965).
Provider details
- NPI number
- 1619142965
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Credential
- LMSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- 72076206 (NY)
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
- 2008-04-28
- Last updated
- 2014-02-14
Frequently asked questions
- What is John Dzwonar's NPI number?
- John Dzwonar's National Provider Identifier (NPI) is 1619142965, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Dzwonar's specialty?
- John Dzwonar is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is John Dzwonar located?
- John Dzwonar's practice location on file with NPPES is 400 West 43rd Street, New York, NY 10036-6301.
- What is John Dzwonar's phone number?
- The practice phone number listed in the NPPES registry for John Dzwonar is (212) 564-4961.
- Does John Dzwonar accept Medicare?
- John Dzwonar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Dzwonar's NPI active?
- Yes — John Dzwonar's NPI (1619142965) is active in the NPPES registry as of the last update on 2014-02-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.