NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Maureen K. Lassen, Ph.D., P.C.

Clinical Psychologist in Mesa, AZ · enumerated 2010 · authorized official Maureen Lassen, President.

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

National Provider Identifier

1558663716

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Maureen K. Lassen, Ph.D., P.C.
Practice address 1234 S Power Rd, Suite 254, Mesa, AZ, 85206
Phone (480) 785-0525
Fax (480) 656-4528
Enumeration date Nov 21, 2010
Last updated in NPPES Dec 20, 2019

Taxonomy & classification

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License 691 (AZ) Primary

Authorized official

Name Maureen Lassen
Title President
Phone (480) 785-0525

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 is Maureen K. Lassen, Ph.D., P.C. located?
The practice location on file with NPPES is in Mesa, AZ.
How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2019-12-20. Verify at npiregistry.cms.hhs.gov.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-12-20.