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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Jack Mark Fields, MD

Diagnostic Radiology Physician in Olympia, WA · enumerated 2006 · practices at South Sound Radiologists Inc P S.

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

National Provider Identifier

1326016379

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Registry record

Entity type Individual (Type 1)
Name Dr. Jack Mark Fields
Credential MD
Sex Male
Practice address 3417 Ensign Rd Ne, Olympia, WA, 98506
Phone (360) 493-4600
Fax (360) 493-4603
Enumeration date Mar 8, 2006
Last updated in NPPES Dec 30, 2025

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License MD00045508 (WA) Primary
MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier Type State Issuer
0384204 Other WA LNI-RADIA
8450157 Medicaid WA —
0207711 Other WA LNI-SOUTH SOUND RADIOLOGY
1043717 Medicaid WA —

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 NPI 1326016379 active?
Yes — as of the latest NPPES snapshot, NPI 1326016379 is active (record last updated 2025-12-30).
How do I verify Jack Fields's NPI record?
Cross-check NPI 1326016379 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-12-30.