Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Ernest Fredrick Pieper, PHARMD

Pharmacist in Willows, CA · enumerated 2011.

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

National Provider Identifier

1457628414

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Registry record

Entity type Individual (Type 1)

Name Dr. Ernest Fredrick Pieper

Credential PHARMD

Sex Male

Practice address 1133 W Sycamore St, Attn: Pharmacy, Willows, CA, 95988

Phone (530) 934-1897

Fax (530) 934-1815

Enumeration date Nov 18, 2011

Last updated in NPPES Nov 18, 2011

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License RPH29387 (CA) Primary

PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD 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

What is the NPI number for Ernest Pieper?

The National Provider Identifier (NPI) for Ernest Pieper is 1457628414, a Type 1 (individual) record in the CMS NPPES registry.

Where does Ernest Pieper practice?

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

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-11-18.