Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Kathryn K Riordan, MD

Rheumatology Physician in Staples, MN · enumerated 2005.

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

National Provider Identifier

1669453726

Verified

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Registry record

Entity type Individual (Type 1)

Name Kathryn K Riordan

Credential MD

Sex Female

Practice address 49725 County 83, Staples, MN, 56479

Phone (218) 894-1515

Fax (218) 894-8767

Enumeration date Nov 7, 2005

Last updated in NPPES Feb 23, 2024

Taxonomy & licenses

207RR0500X Rheumatology Physician Allopathic & Osteopathic Physicians · License 39593 (MN) 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
2114076	Other	-	FIRST HEALTH PLAN
600935	Other	-	ARAZ GROUP AMERICAS PPO
114224100	Other	-	MEDICAL ASSISTANCE
33A94RI	Other	-	BLUE CROSS BLUE SHIELD
101727	Other	-	UCARE
3211049	Other	-	MEDICA HEALTH PLANS
1012375	Other	-	PREFERRED ONE
HP25255	Other	-	HEALTH PARTNERS

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.

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Frequently asked questions

What is the NPI number for Kathryn Riordan?

The National Provider Identifier (NPI) for Kathryn Riordan is 1669453726, a Type 1 (individual) record in the CMS NPPES registry.

Where does Kathryn Riordan practice?

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

Other providers at this practice address

Browse all →

Micheal Ginder Emergency Medicine Physician · Staples, MN NPI 1992706709 Lakewood Health System Rural Health Clinic/Center · Staples, MN NPI 1841280823 Arden Beachy Family Medicine Physician · Staples, MN NPI 1164412151 Julie Mayers Benson Family Medicine Physician · Staples, MN NPI 1720078728 Jonathan Claussen Family Medicine Physician · Staples, MN NPI 1417947029 Gerald Henrickson Family Medicine Physician · Staples, MN NPI 1043200678 Michael Hudalla Family Medicine Physician · Staples, MN NPI 1891785424 Sarah Israelson Family Medicine Physician · Staples, MN NPI 1922098581

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-02-23.