NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Jillian Lassen, FNP

Family Nurse Practitioner in Westlake, OH · enumerated 2021.

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

National Provider Identifier

1326613852

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Jillian Lassen
Credential FNP
Sex Female
Practice address 29055 Clemens Rd Ste A, Westlake, OH, 44145
Phone (216) 450-1613
Enumeration date May 26, 2021
Last updated in NPPES Nov 15, 2023

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License F05210140 (OH) Primary
FNP · Family Nurse Practitioner: A nurse practitioner certified in family practice across the lifespan. About the FNP 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.

Read the full guide → Validate an NPI →

Frequently asked questions

What is the NPI number for Jillian Lassen?
The National Provider Identifier (NPI) for Jillian Lassen is 1326613852, a Type 1 (individual) record in the CMS NPPES registry.
Where does Jillian Lassen practice?
The practice location on file with NPPES is in Westlake, OH. 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 2023-11-15.