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

Mrs. Stephanie Ann Size, DNP, APRN, AGPCNP-BC

Primary Care Nurse Practitioner in Lemont, IL · enumerated 2018.

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

National Provider Identifier

1801377916

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Registry record

Entity type Individual (Type 1)

Name Mrs. Stephanie Ann Size

Credential DNP, APRN, AGPCNP-BC

Sex Female

Practice address Lemont, IL, 60439

Phone (630) 257-4318

Fax (630) 257-4023

Enumeration date Aug 27, 2018

Last updated in NPPES Aug 27, 2018

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

Taxonomy & licenses

363LP2300X Primary Care Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 209.017556 (IL) Primary

DNP · Doctor of Nursing Practice: A clinical doctorate for advanced practice nurses. About the DNP 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

How do I verify Stephanie Size's NPI record?

Cross-check NPI 1801377916 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1801377916 active?

Yes, as of the latest NPPES snapshot, NPI 1801377916 is active (record last updated 2018-08-27).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-08-27.