Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Sean John Lawless, O.D.
Optometrist in Berwyn, IL · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1275681843
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Registry record
Entity type Individual (Type 1)
Name Sean John Lawless
Credential O.D.
Sex Male
Practice address 7153 Cermak Rd, Berwyn, IL, 60402
Phone (708) 795-8585
Enumeration date Jan 8, 2007
Last updated in NPPES Jul 8, 2007
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
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.
Frequently asked questions
Where does Sean Lawless practice?
The practice location on file with NPPES is in Berwyn, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Sean Lawless?
The National Provider Identifier (NPI) for Sean Lawless is 1275681843, 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 2007-07-08.