Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Alexandra Paige Diller, DO

Emergency Medicine Physician in Hershey, PA · enumerated 2017.

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

National Provider Identifier

1386179596

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Registry record

Entity type Individual (Type 1)

Name Alexandra Paige Diller

Credential DO

Sex Female

Practice address Penn State Health Milton S Hershey Medical Center Emerg, 500 University Dr, Hershey, PA, 17033

Phone (800) 243-1455

Fax (717) 531-4587

Enumeration date Apr 25, 2017

Last updated in NPPES May 19, 2025

Taxonomy & licenses

207P00000X Emergency Medicine Physician Allopathic & Osteopathic Physicians · License OS021177 (PA) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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 Alexandra Diller?

Alexandra Diller is registered in NPPES with the primary taxonomy of Emergency Medicine Physician. 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.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-05-19.