NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Alexius J Crowley DDS Ltd

Dentist in Deerfield, IL · enumerated 2007 · authorized official Alexius Crowley, Owner.

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

National Provider Identifier

1346423696

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Alexius J Crowley DDS Ltd
Practice address 720 Osterman, Suite 101, Deerfield, IL, 60015
Phone (847) 945-0444
Fax (847) 945-6179
Enumeration date Dec 10, 2007
Last updated in NPPES Dec 10, 2007

Taxonomy & classification

122300000X Dentist Dental Providers Primary

Authorized official

Name Alexius Crowley
Title Owner
Phone (847) 945-0444

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 Alexius J Crowley DDS Ltd?
The NPI for Alexius J Crowley DDS Ltd is 1346423696, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Alexius J Crowley DDS Ltd?
NPPES lists Alexius Crowley (Owner) as the authorized official for this organization.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-12-10.