NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Donna Felix Madlangbayan, O.D.

Optometrist in Hayward, CA · enumerated 2006 · practices at Fremont Family Eyecare.

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

National Provider Identifier

1669434692

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Donna Felix Madlangbayan
Credential O.D.
Sex Female
Practice address 31119 Mission Blvd, Hayward, CA, 94544
Phone (510) 471-1234
Fax (510) 471-7414
Enumeration date Apr 5, 2006
Last updated in NPPES Jan 16, 2013

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License 10541T (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

What specialty is Donna Madlangbayan?
Donna Madlangbayan is registered in NPPES with the primary taxonomy of Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-01-16.