Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Donald W. Fields, D.O.

Pediatrics Physician in Fresno, CA · enumerated 2006.

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

National Provider Identifier

1932177839

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Donald W. Fields

Credential D.O.

Sex Male

Practice address 290 N Wayte Ln, Fresno, CA, 93701

Phone (559) 459-4300

Fax (559) 459-4569

Enumeration date Mar 8, 2006

Last updated in NPPES Jul 3, 2017

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License MTL-2017-069 (GU) Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 20A6702 (CA) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO 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

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 Donald Fields?

Donald Fields is registered in NPPES with the primary taxonomy of Pediatrics Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Irene Sanchez Nurse Practitioner · Fresno, CA NPI 1780680611 Donna Mau Medical Physician Assistant · Fresno, CA NPI 1669457552 Robyn Agnew Advanced Practice Midwife · Fresno, CA NPI 1114991825 Tamiko Kido Pediatrics Physician · Fresno, CA NPI 1285663138 Paulette Ginier Endocrinology, Diabetes & Metabolism Physician · Fresno, CA NPI 1063447571 Paul Madsen Obstetrics & Gynecology Physician · Fresno, CA NPI 1053337014 Lee Schilling Obstetrics & Gynecology Physician · Fresno, CA NPI 1457377426 Helen Wong Gastroenterology Physician · Fresno, CA NPI 1790704245

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-07-03.