NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Allen Paul Astrack, BSW

Clinical Social Worker in Chico, CA · enumerated 2010 · practices at County of Butte.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1871800102

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Allen Paul Astrack
Credential BSW
Sex Male
Practice address Chico, CA, 95926
Phone (530) 891-2784
Enumeration date Sep 8, 2010
Last updated in NPPES Mar 1, 2017

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

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers Secondary
1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License LCSW75198 Primary

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 → Validate an NPI →

Frequently asked questions

What is the NPI number for Allen Astrack?
The National Provider Identifier (NPI) for Allen Astrack is 1871800102, a Type 1 (individual) record in the CMS NPPES registry.
Where does Allen Astrack practice?
The practice location on file with NPPES is in Chico, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-03-01.