NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Tomasz M Ziedalski, MD

Pulmonary Disease Physician in Everett, WA · enumerated 2006.

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

National Provider Identifier

1265473854

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Tomasz M Ziedalski
Credential MD
Sex Male
Practice address 12728 19th Ave. Se, Suite 200, Everett, WA, 98208
Fax (425) 252-1118
Enumeration date Jun 8, 2006
Last updated in NPPES Apr 16, 2013

Taxonomy & licenses

207RC0200X Critical Care Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License MD00043384 (WA) Secondary
207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License MD00043384 (WA) Primary
207RS0012X Sleep Medicine (Internal Medicine) Physician Allopathic & Osteopathic Physicians · License MD00043384 (WA) Secondary
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
8395766 Medicaid WA -
P00145102 Other WA RAILROAD MEDICARE
0186417 Other WA LABOR AND INDUSTRY
P00717628 Other WA RAILROAD MEDICARE
MD00043384 Other WA STATE LICENSE NUMBER

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 specialty is Tomasz Ziedalski?
Tomasz Ziedalski is registered in NPPES with the primary taxonomy of Pulmonary Disease Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-16.