Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sharon Thorson, NP

Family Nurse Practitioner in Appleton, WI · enumerated 2005.

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

National Provider Identifier

1558361238

Verified

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Registry record

Entity type Individual (Type 1)

Name Sharon Thorson

Credential NP

Sex Female

Practice address 1818 N Meade St, Appleton, WI, 54911

Phone (800) 968-6866

Enumeration date Jul 26, 2005

Last updated in NPPES Apr 20, 2008

Taxonomy & licenses

363LF0000X Family Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 1678033 (WI) Primary

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 1678033 (WI) 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

Other identifiers

Identifier	Type	State	Issuer
43941500	Medicaid	WI	-

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 Sharon Thorson's NPI record?

Cross-check NPI 1558361238 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1558361238 active?

Yes, as of the latest NPPES snapshot, NPI 1558361238 is active (record last updated 2008-04-20).

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Appleton Emergency Services S C Emergency Medicine Physician · Appleton, WI NPI 1588666853 Michael Hooker Hospitalist Physician · Appleton, WI NPI 1689679953 Honnie Bermas Surgery Physician · Appleton, WI NPI 1346249323 Steven Mcintyre Emergency Medical Services (Emergency Medicine) Physician · Appleton, WI NPI 1306846894 Cyril Walsh Emergency Medical Services (Emergency Medicine) Physician · Appleton, WI NPI 1194725879 Brad Sandleback Emergency Medical Services (Emergency Medicine) Physician · Appleton, WI NPI 1902806698 Craig Quandt-Walle Medical Physician Assistant · Appleton, WI NPI 1831199439 Erica Meyer Emergency Medical Services (Emergency Medicine) Physician · Appleton, WI NPI 1770583353

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-04-20.