Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Gunilla Haegerstrom-Portnoy, OD, PHD

Optometrist in Berkeley, CA · enumerated 2007.

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

National Provider Identifier

1053458745

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Registry record

Entity type Individual (Type 1)

Name Gunilla Haegerstrom-Portnoy

Credential OD, PHD

Sex Female

Practice address School of Optometry University of California, Berkeley, CA, 94720

Phone (510) 642-9966

Enumeration date Jan 31, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 5682 (CA) Primary

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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1053458745 active?

Yes, as of the latest NPPES snapshot, NPI 1053458745 is active (record last updated 2007-07-08).

How do I verify Gunilla Haegerstrom-Portnoy's NPI record?

Cross-check NPI 1053458745 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.