NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Antonio C Yuk, MD, Sc

Neurological Surgery Physician in Crystal Lake, IL · enumerated 2007 · authorized official Antonio Yuk, President.

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

National Provider Identifier

1306034707

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Antonio C Yuk, MD, Sc
Practice address 360 Station Dr, Suite 240, Crystal Lake, IL, 60014
Fax (815) 356-5579
Enumeration date Oct 10, 2007
Last updated in NPPES Jul 29, 2008

Taxonomy & classification

207T00000X Neurological Surgery Physician Allopathic & Osteopathic Physicians · License 336032547 (IL) Primary

Authorized official

Name Antonio Yuk
Title President

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

How current is this record?
Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2008-07-29. Verify at npiregistry.cms.hhs.gov.
Where is Antonio C Yuk, MD, Sc located?
The practice location on file with NPPES is in Crystal Lake, IL.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-07-29.