NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Miss Colleen Patricia Lassen, COTA/L

Occupational Therapy Assistant in Ypsilanti, MI · enumerated 2010.

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

National Provider Identifier

1649581885

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Miss Colleen Patricia Lassen
Credential COTA/L
Sex Female
Practice address 8380 Geddes Rd, Ypsilanti, MI, 48198
Fax (734) 879-4949
Enumeration date Jun 22, 2010
Last updated in NPPES Jun 22, 2010

Taxonomy & licenses

224Z00000X Occupational Therapy Assistant Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 5202001611 (MI) Primary
224Z00000X Occupational Therapy Assistant Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 057002577 (IL) Secondary

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

Where does Colleen Lassen practice?
The practice location on file with NPPES is in Ypsilanti, MI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Colleen Lassen?
The National Provider Identifier (NPI) for Colleen Lassen is 1649581885, 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 2010-06-22.