NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Crosby and Chen Pllc

Neurology Physician in Thornton, CO · enumerated 2010 · authorized official Dyanne Fox, Billing Manager.

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

National Provider Identifier

1538471891

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Crosby and Chen Pllc
Practice address 9141 Grant St Ste 237, Thornton, CO, 80229
Fax (303) 452-6225
Enumeration date Jul 2, 2010
Last updated in NPPES Feb 17, 2011

Taxonomy & classification

2084N0400X Neurology Physician Allopathic & Osteopathic Physicians · License 20936 (CO) Primary

Authorized official

Name Dyanne Fox
Title Billing Manager

Other identifiers

Identifier Type State Issuer
51526522 Medicaid CO -

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

Who is the authorized official for Crosby and Chen Pllc?
NPPES lists Dyanne Fox (Billing Manager) as the authorized official for this organization.
What is the NPI number for Crosby and Chen Pllc?
The NPI for Crosby and Chen Pllc is 1538471891, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-02-17.