NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alison Van Diggelen, MSW

Social Worker in Aurora, CO · enumerated 2022.

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

National Provider Identifier

1275243123

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Alison Van Diggelen
Credential MSW
Sex Female
Practice address 1700 Wheeling St, Aurora, CO, 80045
Enumeration date Dec 1, 2022
Last updated in NPPES Dec 1, 2022

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 0009922688 (CO) Primary

Other identifiers

Identifier Type State Issuer
988321245 Other - UNITED HEALTH CARE

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

Where does Alison Van Diggelen practice?
The practice location on file with NPPES is in Aurora, CO. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Alison Van Diggelen?
The National Provider Identifier (NPI) for Alison Van Diggelen is 1275243123, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-12-01.