NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alexandra Helenius

Marriage & Family Therapist in San Mateo, CA · enumerated 2016.

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

National Provider Identifier

1033571237

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Alexandra Helenius
Sex Female
Practice address 1510 Fashion Island Blvd, Suite 110, San Mateo, CA, 94404
Enumeration date Mar 25, 2016
Last updated in NPPES Apr 1, 2016

Taxonomy & licenses

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License 89273 (CA) Primary

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 Alexandra Helenius practice?
The practice location on file with NPPES is in San Mateo, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Alexandra Helenius?
The National Provider Identifier (NPI) for Alexandra Helenius is 1033571237, 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 2016-04-01.