NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Internal Medicine Pulmonary Diseases Ltd

Pulmonary Disease Physician in Oak Lawn, IL · enumerated 2007 · authorized official Nicholas Difilippo, President.

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

National Provider Identifier

1396926036

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Internal Medicine Pulmonary Diseases Ltd
Practice address 9500 S 50th Court, Oak Lawn, IL, 60453
Phone (708) 424-6450
Fax (708) 424-6371
Enumeration date Nov 23, 2007
Last updated in NPPES Nov 29, 2007

Taxonomy & classification

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Nicholas Difilippo
Title President
Phone (708) 424-6450

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 Internal Medicine Pulmonary Diseases Ltd?
The NPI for Internal Medicine Pulmonary Diseases Ltd is 1396926036, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Internal Medicine Pulmonary Diseases Ltd?
NPPES lists Nicholas Difilippo (President) as the authorized official for this organization.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-11-29.