Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sonja M Ross, APN

Nurse Practitioner in Aurora, IL · enumerated 2006.

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

National Provider Identifier

1871509893

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Registry record

Entity type Individual (Type 1)

Name Sonja M Ross

Credential APN

Sex Female

Practice address 400 N Highland Ave, Aurora, IL, 60506

Phone (630) 978-2532

Enumeration date Jul 31, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 209004704 (IL) 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 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 Sonja Ross?

Sonja Ross 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.