Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Wilfred Derksen, MD

Pediatrics Physician in Fresno, CA · enumerated 2005.

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

National Provider Identifier

1003801267

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Registry record

Entity type Individual (Type 1)

Name Wilfred Derksen

Credential MD

Sex Male

Practice address 1570 E Herndon Ave, Fresno, CA, 93720

Phone (559) 437-7300

Fax (559) 437-7153

Enumeration date Sep 14, 2005

Last updated in NPPES Apr 30, 2008

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License C33691 (CA) 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

Where does Wilfred Derksen practice?

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

What is the NPI number for Wilfred Derksen?

The National Provider Identifier (NPI) for Wilfred Derksen is 1003801267, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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William Mochizuki Family Medicine Physician · Fresno, CA NPI 1295720753 Eric Bridgnell Family Medicine Physician · Fresno, CA NPI 1639164197 Patrick Stuart Family Medicine Physician · Fresno, CA NPI 1104811330 Ernest Yamamoto Family Medicine Physician · Fresno, CA NPI 1396730529 Carol Kim Internal Medicine Physician · Fresno, CA NPI 1285629303 Theodore Torio Medical Physician Assistant · Fresno, CA NPI 1356374888 Joann Miller General Practice Dentistry · Fresno, CA NPI 1194740548 Community Health Enterprises Community/Retail Pharmacy · Fresno, CA NPI 1497813901

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-04-30.