Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Ekaterina Knowlton, M.D.

Surgery Physician in Renton, WA · enumerated 2005.

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

National Provider Identifier

1578561007

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Registry record

Entity type Individual (Type 1)

Name Ekaterina Knowlton

Credential M.D.

Sex Female

Practice address 4033 Talbot Rd S Ste 530, Renton, WA, 98055

Phone (425) 690-3433

Fax (425) 690-9433

Enumeration date Jul 8, 2005

Last updated in NPPES Apr 13, 2022

Taxonomy & licenses

174400000X Specialist Other Service Providers · License MD00038128 (WA) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 54947 (MN) Secondary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License MD00038128 (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
8265233	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 1578561007 active?

Yes, as of the latest NPPES snapshot, NPI 1578561007 is active (record last updated 2022-04-13).

How do I verify Ekaterina Knowlton's NPI record?

Cross-check NPI 1578561007 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

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Rebecca Stickler Surgery Physician · Renton, WA NPI 1104936020 Trisha Unger Surgery Physician · Renton, WA NPI 1790833408 Heather Wheeler Surgery Physician · Renton, WA NPI 1215137930 Crystal Colleran Surgical Physician Assistant · Renton, WA NPI 1750568119 Omar Dorzi Vascular Surgery Physician · Renton, WA NPI 1811154537 Cheryl Cieszlak Surgical Physician Assistant · Renton, WA NPI 1477888592 Nicole Zern Surgery Physician · Renton, WA NPI 1043534936 Donald Harris Vascular Surgery Physician · Renton, WA NPI 1285958967

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-04-13.