Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Natalie E Duffy, CRNP

Nurse Practitioner in York, PA · enumerated 2013 · practices at York Eye Optical LLC.

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

National Provider Identifier

1528494713

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Natalie E Duffy

Credential CRNP

Sex Female

Practice address 400 Pine Grove Commons, York, PA, 17403

Phone (717) 755-2020

Fax (717) 755-2390

Enumeration date Sep 19, 2013

Last updated in NPPES Oct 30, 2013

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License SP013348 (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

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 Natalie Duffy?

Natalie Duffy is registered in NPPES with the primary taxonomy of Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

David Bene Ophthalmology Physician · York, PA NPI 1598879462 York Eye Optical LLC Eyewear Supplier · York, PA NPI 1700124674

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-10-30.