NPI Portal NPI Lookup & Verification

Alexander Klein

Alexander Klein is a Clinical Social Worker provider (Social Worker) practicing in Madison, CT, registered in the NPPES registry with NPI 1508379124 since 2017.

✓ Active NPI ✓ Valid NPI checksum Sole proprietor

NPI 1508379124
Entity type Individual (Type 1)
Name Alexander Klein
Sex Male
Practice address Madison, CT, 06443
Phone 5853305999
Enumeration date 2017-11-06
Last updated in NPPES 2017-11-06

Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

Taxonomy code Specialty Primary License State
1041C0700X Clinical Social Worker Primary
Copy-ready billing details
Provider: Alexander Klein
NPI: 1508379124
Taxonomy: 1041C0700X (Clinical Social Worker)
Address: Madison, CT, 06443

Other providers at this practice address

NPI Name Type Specialty Location
1669412318 Jollys Drug Store Inc Organization Long Term Care Pharmacy Madison, CT
1053181248 Jlb Therapy LLC Organization Adult Mental Health Clinic/Center Madison, CT

Verify this record

Cross-check NPI 1508379124 against the authoritative CMS record: view Alexander Klein on the official NPPES registry .

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.

Frequently asked questions

How do I verify Alexander Klein's NPI record?
Cross-check NPI 1508379124 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1508379124 active?
Yes — as of the latest NPPES snapshot, NPI 1508379124 is active (record last updated 2017-11-06).

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2017-11-06.