Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Corey Pieper, PHD

Clinical Psychologist in Onamia, MN · enumerated 2019.

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

National Provider Identifier

1841758935

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Registry record

Entity type Individual (Type 1)

Name Corey Pieper

Credential PHD

Sex Male

Practice address 200 Elm St N, Onamia, MN, 56359

Phone (320) 532-3154

Fax (320) 532-3111

Enumeration date Mar 7, 2019

Last updated in NPPES Jul 20, 2022

Taxonomy & licenses

103TC0700X Clinical Psychologist Behavioral Health & Social Service Providers · License LP6379 (MN) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD 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.

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Frequently asked questions

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Corey Pieper?

Corey Pieper is registered in NPPES with the primary taxonomy of Clinical Psychologist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

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Peter Lindbloom Medical Physician Assistant · Onamia, MN NPI 1912970708 Joan Shields Medical Physician Assistant · Onamia, MN NPI 1891769592 Lynne Steiner Family Medicine Physician · Onamia, MN NPI 1891760518 Rodney Hayes Family Medicine Physician · Onamia, MN NPI 1821066127 Thomas Bracken Family Medicine Physician · Onamia, MN NPI 1154390227 Arden Virnig Family Medicine Physician · Onamia, MN NPI 1770543647 Patti Hook Family Medicine Physician · Onamia, MN NPI 1548220940 Mille Lacs Health System Critical Access Hospital · Onamia, MN NPI 1548212699

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-07-20.