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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Sierra Richelle Diehl, PA-C

Physician Assistant in Altoona, PA · enumerated 2021.

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

National Provider Identifier

1144983115

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Registry record

Entity type Individual (Type 1)
Name Mrs. Sierra Richelle Diehl
Credential PA-C
Sex Female
Practice address 615 6th Ave, Altoona, PA, 16602
Phone (814) 944-7383
Enumeration date Oct 18, 2021
Last updated in NPPES Jul 21, 2025

Taxonomy & licenses

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License MA062560 (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.

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Frequently asked questions

Is NPI 1144983115 active?
Yes, as of the latest NPPES snapshot, NPI 1144983115 is active (record last updated 2025-07-21).
How do I verify Sierra Diehl's NPI record?
Cross-check NPI 1144983115 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-07-21.