Roger Keizerstein, LCSW
NPI 1194885038 · Social Worker · East Setauket, NY
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Roger Keizerstein, LCSW is a Social Worker provider in East Setauket, NY (NPI 1194885038).
Provider details
- NPI number
- 1194885038
- Entity type
- Individual
- Primary specialty
- Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- No
- License
- PR0283491 (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
19 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
- 2006-12-11
- Last updated
- 2007-07-08
Frequently asked questions
- What is Roger Keizerstein's NPI number?
- Roger Keizerstein's National Provider Identifier (NPI) is 1194885038, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Roger Keizerstein's specialty?
- Roger Keizerstein is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
- Where is Roger Keizerstein located?
- Roger Keizerstein's practice location on file with NPPES is 249 Rt 25a, East Setauket, NY 11733.
- What is Roger Keizerstein's phone number?
- The practice phone number listed in the NPPES registry for Roger Keizerstein is (631) 689-6382.
- Does Roger Keizerstein accept Medicare?
- Roger Keizerstein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Roger Keizerstein's NPI active?
- Yes — Roger Keizerstein's NPI (1194885038) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.