JOHN S WINFIELD M.D.
NPI 1184674681
Pathology - Cytopathology in Chico, CA

Q: What is John Winfield's NPI number?

The NPI number for John Winfield is 1184674681. It was assigned to this individual provider in the NPPES registry on May 12, 2006.

Q: What is John Winfield's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Cytopathology, with taxonomy code 207ZC0500X.

Q: When was this NPI record last updated?

The NPPES record for John Winfield was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since May 12, 2006

183 E 8TH AVE, CHICO, CA 95926(530) 891-6244(530) 891-0134 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 30, 2026.

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About John S Winfield M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOHN S WINFIELD M.D. (NPI 1184674681) is an individual cytopathology provider in Chico, California, licensed in California (C29483) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1184674681

Entity TypeIndividualMale

Primary Taxonomy207ZC0500X

Provider Legal NameJOHN S WINFIELDCredential: M.D.

Location Address183 E 8TH AVEChico, CA 95926-2341

Mailing Address183 E 8th AveChico, CA 95926-2341 · (530) 891-6244 · Fax (530) 891-0134

Phone(530) 891-6244

Fax(530) 891-0134

Sole ProprietorNo

Enumeration DateMay 12, 2006

Last NPPES UpdateSeptember 11, 2025

✔ NPI 1184674681 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPathology · CytopathologyAllopathic & Osteopathic Physicians

Taxonomy Code207ZC0500X

License✔ Licensed in CA · C29483

Definition

A cytopathologist is an anatomic pathologist trained in the diagnosis of human disease by means of the study of cells obtained from body secretions and fluids, by scraping, washing, or sponging the surface of a lesion, or by the aspiration of a tumor mass or body organ with a fine needle. A major aspect of a cytopathologist's practice is the interpretation of Papanicolaou-stained smears of cells from the female reproductive systems, the Pap test. However, the cytopathologist's expertise is applied to the diagnosis of cells from all systems and areas of the body. He/she is a consultant to all medical specialists.

Also ListedPathology · Anatomic Pathology & Clinical PathologyTaxonomy 207ZP0102X · License C29483 (CA)

183 E 8TH AVE, Chico, CA 95926

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Other Identifiers 1

Medicaid00C294830CA

Other Providers at the Same Location NPPES 15

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

REBECCA LYNN JOHNSON M.D.