NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. John W Illingworth, M.S.W.

Clinical Social Worker in Bethlehem, PA · enumerated 2006 · practices at St. Luke'S Physician Group, Inc..

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

National Provider Identifier

1306800420

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mr. John W Illingworth
Credential M.S.W.
Sex Male
Practice address 4311 Easton Ave, Bethlehem, PA, 18020
Fax (484) 526-3697
Enumeration date Apr 14, 2006
Last updated in NPPES May 26, 2015

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers Primary

Other identifiers

Identifier Type State Issuer
SW013073L Other PA LICENSE NUMBER

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 John Illingworth?
The National Provider Identifier (NPI) for John Illingworth is 1306800420, a Type 1 (individual) record in the CMS NPPES registry.
Where does John Illingworth practice?
The practice location on file with NPPES is in Bethlehem, PA. 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 2015-05-26.