Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Caitlyn Mierau, PA-C

Physician Assistant in Chester, PA · enumerated 2019.

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

National Provider Identifier

1992279590

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Registry record

Entity type Individual (Type 1)

Name Caitlyn Mierau

Credential PA-C

Sex Female

Practice address 2112 Providence Ave, Chester, PA, 19013

Phone (610) 874-5366

Enumeration date Jan 16, 2019

Last updated in NPPES Jan 23, 2024

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License OA006794 (PA) Secondary

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License MA062657 (PA) 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

What specialty is Caitlyn Mierau?

Caitlyn Mierau is registered in NPPES with the primary taxonomy of Physician Assistant. 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 2024-01-23.