Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Seth Mark Thaler, MD

Nephrology Physician in Olympia, WA · enumerated 2005.

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

National Provider Identifier

1609859602

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Registry record

Entity type Individual (Type 1)

Name Dr. Seth Mark Thaler

Credential MD

Sex Male

Practice address 3525 Ensign Rd Ne, Suite K, Olympia, WA, 98506

Phone (360) 413-8121

Fax (360) 413-8865

Enumeration date Nov 22, 2005

Last updated in NPPES Oct 21, 2024

Taxonomy & licenses

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License MD00036388 (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
8228181	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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Seth Thaler?

Seth Thaler is registered in NPPES with the primary taxonomy of Nephrology 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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-10-21.