Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Erin Zezulak

Lactation Consultant (Registered Nurse) in Davis, CA · enumerated 2017.

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

National Provider Identifier

1255844593

Verified

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Registry record

Entity type Individual (Type 1)

Name Erin Zezulak

Sex Female

Practice address Davis, CA, 95618

Phone (530) 304-8737

Enumeration date Nov 8, 2017

Last updated in NPPES Nov 8, 2017

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

163WL0100X Lactation Consultant (Registered Nurse) Nursing Service Providers · License 527217 (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.

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Frequently asked questions

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.

What specialty is Erin Zezulak?

Erin Zezulak is registered in NPPES with the primary taxonomy of Lactation Consultant (Registered Nurse). The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-11-08.