Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Katharine A. Yao, MD

Surgical Oncology Physician in Evanston, IL · enumerated 2006.

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

National Provider Identifier

1184698060

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Registry record

Entity type Individual (Type 1)

Name Katharine A. Yao

Credential MD

Sex Female

Practice address 2650 Ridge Ave # 1155, Evanston, IL, 60201

Phone (847) 570-1700

Fax (847) 733-5298

Enumeration date Feb 15, 2006

Last updated in NPPES Sep 14, 2026

Taxonomy & licenses

2086X0206X Surgical Oncology Physician Allopathic & Osteopathic Physicians · License 036095007 (IL) Primary

208600000X Surgery Physician Allopathic & Osteopathic Physicians · License 36095007 (IL) Secondary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

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 is the NPI number for Katharine Yao?

The National Provider Identifier (NPI) for Katharine Yao is 1184698060, a Type 1 (individual) record in the CMS NPPES registry.

Where does Katharine Yao practice?

The practice location on file with NPPES is in Evanston, IL. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-09-14.