Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Jennifer L Zerfass, O.D.

Optometrist in Gilbertsville, PA · enumerated 2012.

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

National Provider Identifier

1801157722

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Registry record

Entity type Individual (Type 1)

Name Dr. Jennifer L Zerfass

Credential O.D.

Sex Female

Practice address 1806 Swamp Pike, Suite 400, Gilbertsville, PA, 19525

Phone (610) 323-4445

Enumeration date Jun 6, 2012

Last updated in NPPES Jun 6, 2012

Taxonomy & licenses

152W00000X Optometrist Eye and Vision Services Providers · License OEG002612 (PA) 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 Jennifer Zerfass?

Jennifer Zerfass 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-06-06.