Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Sara J Riegert, MD

Obstetrics & Gynecology Physician in Fond Du Lac, WI · enumerated 2005.

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

National Provider Identifier

1013908664

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Registry record

Entity type Individual (Type 1)

Name Sara J Riegert

Credential MD

Sex Female

Practice address 420 E Division St, Fond Du Lac, WI, 54935

Phone (920) 926-8450

Enumeration date Nov 2, 2005

Last updated in NPPES Dec 16, 2020

Taxonomy & licenses

207V00000X Obstetrics & Gynecology Physician Allopathic & Osteopathic Physicians · License 47969 (WI) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
34648400	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 Sara Riegert's NPI record?

Cross-check NPI 1013908664 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1013908664 active?

Yes, as of the latest NPPES snapshot, NPI 1013908664 is active (record last updated 2020-12-16).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2020-12-16.