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

Ann Elizabeth Riddle, RN

Q: What is the NPI number for Ann Riddle?

The National Provider Identifier (NPI) for Ann Riddle is 1245896471, a Type 1 (individual) record in the CMS NPPES registry.

General Practice Registered Nurse in Manitowoc, WI · enumerated 2019.

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

National Provider Identifier

1245896471

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Registry record

Entity type Individual (Type 1)

Name Ann Elizabeth Riddle

Credential RN

Sex Female

Practice address Manitowoc, WI, 54220

Phone (920) 918-1173

Enumeration date May 14, 2019

Last updated in NPPES May 14, 2019

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

Taxonomy & licenses

163WG0000X General Practice Registered Nurse Nursing Service Providers · License 133616-30 (WI) Primary

RN · Registered Nurse: A nurse who completed an accredited nursing program and passed the NCLEX-RN licensure exam. About the RN 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

Where does Ann Riddle practice?

The practice location on file with NPPES is in Manitowoc, WI. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Ann Riddle?

The National Provider Identifier (NPI) for Ann Riddle is 1245896471, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-05-14.