Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Erica Ruth Sauer, M.D.

Hospitalist Physician in Fargo, ND · enumerated 2012.

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

National Provider Identifier

1639430721

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Registry record

Entity type Individual (Type 1)

Name Dr. Erica Ruth Sauer

Credential M.D.

Sex Female

Practice address 5225 23rd Ave S, Fargo, ND, 58104

Phone (701) 417-2575

Enumeration date Jun 5, 2012

Last updated in NPPES Jun 3, 2024

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 04-38120 (KS) Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 2015015454 (MO) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 14889 (ND) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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 NPI 1639430721 active?

Yes, as of the latest NPPES snapshot, NPI 1639430721 is active (record last updated 2024-06-03).

How do I verify Erica Sauer's NPI record?

Cross-check NPI 1639430721 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

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James Fowler Hospitalist Physician · Fargo, ND NPI 1194726596 Stephen Jameson Emergency Medicine Physician · Fargo, ND NPI 1174598825 David Covington Emergency Medicine Physician · Fargo, ND NPI 1083689046 Edgardo Crisostomo Neurology Physician · Fargo, ND NPI 1730141466 Alexander Stein Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Fargo, ND NPI 1861440430 Joleen Finken Hospitalist Physician · Fargo, ND NPI 1427009844 Sean Freyne Diagnostic Radiology Physician · Fargo, ND NPI 1134172869 Gwen Witzel Nurse Practitioner · Fargo, ND NPI 1720026768

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-06-03.