1. Home
  2. Directory
  3. New York
  4. Lindenhurst
  5. Social Worker
  6. NPI Profile
Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MRS. ALEXA BRYNN KLEIN LCSW
NPI 1386031698
Social Worker - Clinical in Lindenhurst, NY

Active since April 24, 2015
390 S GREENE AVE, LINDENHURST, NY 11757(631) 286-4041 Get Directions Write a Review

NPPES record last updated: July 7, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Jul 7, 2026, Jul 5, 2024, Jan 6, 2020 (3 updates tracked since 2020).

About Mrs. Alexa Brynn Klein Lcsw NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MRS. ALEXA BRYNN KLEIN LCSW (NPI 1386031698) is an individual clinical provider in Lindenhurst, New York, licensed in New York (087984) and active in the NPI registry since April 2015.

NPPES Registry Identity

NPI1386031698
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMRS. ALEXA BRYNN KLEINCredential: LCSW
Location Address390 S GREENE AVELindenhurst, NY 11757-5430
Mailing Address390 S Greene AveLindenhurst, NY 11757-5430 · (631) 286-4041
Phone(631) 286-4041
Sole ProprietorYes
Enumeration DateApril 24, 2015
Last NPPES UpdateJuly 7, 20263 updates tracked since enumeration
NPPES CertifiedJuly 7, 2026
✔ NPI 1386031698 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
License✔ Licensed in NY · 087984
Definition
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
Also ListedSocial WorkerTaxonomy 104100000X · License 093235 (NY)
390 S GREENE AVE, Lindenhurst, NY 11757
Open in Google Maps ↗

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Insurance Company, UnitedHealthcare.Insurance ›

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ALEXA KLEIN, LCSW, P.C.
Clinic/Center (Mental Health (Including Community Mental Health Center))
390 S GREENE AVE
LINDENHURST, NY 11757
Suffolk County (631) 268-4041

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Alexa Klein's NPI number?

The NPI number for Alexa Klein is 1386031698. It was assigned to this individual provider in the NPPES registry on April 24, 2015.

Where is Alexa Klein located?

Alexa Klein practices at 390 S Greene Ave, Lindenhurst, NY 11757. The listed phone number is (631) 286-4041.

What is Alexa Klein's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

What insurance does Alexa Klein accept?

Health plans from Oscar Insurance Company and UnitedHealthcare list Alexa Klein as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Alexa Klein was last updated on July 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 33 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.