Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Katharine Blair Stiers, MD

Pediatrics Physician in Yakima, WA · enumerated 2021.

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

National Provider Identifier

1235716853

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Registry record

Entity type Individual (Type 1)

Name Katharine Blair Stiers

Credential MD

Sex Female

Practice address 402 S 12th Ave, Yakima, WA, 98902

Phone (509) 575-0114

Fax (509) 452-5224

Enumeration date Mar 28, 2021

Last updated in NPPES Aug 27, 2024

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License ML61165277 (WA) Secondary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License MD61533491 (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
2188789	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

Is NPI 1235716853 active?

Yes, as of the latest NPPES snapshot, NPI 1235716853 is active (record last updated 2024-08-27).

How do I verify Katharine Stiers's NPI record?

Cross-check NPI 1235716853 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Yakima Valley Professional Services on 12th, PC Multi-Specialty Clinic/Center · Yakima, WA NPI 1356393383 Paul Emmans Family Medicine Physician · Yakima, WA NPI 1033130646 Anne Tweedy Nurse Practitioner · Yakima, WA NPI 1659395531 Jeffrey Bartlett Pediatrics Physician · Yakima, WA NPI 1366547416 Roy Simms Pediatrics Physician · Yakima, WA NPI 1174628069 Michael Crook Pediatrics Physician · Yakima, WA NPI 1922103803 Michael Schaffrinna Pediatric Adolescent Medicine Physician · Yakima, WA NPI 1548352487 Chester Chua Internal Medicine Physician · Yakima, WA NPI 1437293206

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-08-27.