Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Nancy K Erwin, NP

Registered Nurse in Peoria, IL · enumerated 2005.

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

National Provider Identifier

1205835527

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Registry record

Entity type Individual (Type 1)

Name Mrs. Nancy K Erwin

Credential NP

Sex Female

Practice address 8940 N Wood Sage Rd, Peoria, IL, 61615

Phone (309) 243-3000

Fax (309) 243-3050

Enumeration date Jul 19, 2005

Last updated in NPPES Sep 11, 2025

Taxonomy & licenses

163W00000X Registered Nurse Nursing Service Providers Primary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers Secondary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP 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

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 Nancy Erwin?

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

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Sudhir Sekhon Hematology & Oncology Physician · Peoria, IL NPI 1598763955 Nguyet Le-Lindqwister Hematology & Oncology Physician · Peoria, IL NPI 1174522486 Paul Fishkin Hematology & Oncology Physician · Peoria, IL NPI 1063411379 Srinivas Jujjavarapu Hematology & Oncology Physician · Peoria, IL NPI 1336148659 James Knost Hematology & Oncology Physician · Peoria, IL NPI 1245239565 Doreen Link Nurse Practitioner · Peoria, IL NPI 1972502292 James Gerstner Hematology & Oncology Physician · Peoria, IL NPI 1285633503 Sachdev Thomas Hematology & Oncology Physician · Peoria, IL NPI 1245239367

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-09-11.