NPI Portal NPI Lookup & Verification

Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Vein Clinics of Chicago LLC

Vascular Surgery Physician in Chicago, IL · enumerated 2012 · authorized official Yan Katsnelson, Owner.

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

National Provider Identifier

1386904621

Verified

See something wrong? Report a correction

Registry record

Entity type Organization (Type 2)
Legal business name Vein Clinics of Chicago LLC
Practice address 3927 W Belmont Ave, Ste 103, Chicago, IL, 60618
Phone (847) 593-8460
Fax (847) 593-8604
Enumeration date May 21, 2012
Last updated in NPPES May 24, 2022

Taxonomy & classification

2086S0129X Vascular Surgery Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Yan Katsnelson
Title Owner
Phone (847) 593-8460

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

Who is the authorized official for Vein Clinics of Chicago LLC?
NPPES lists Yan Katsnelson (Owner) as the authorized official for this organization.
What is the NPI number for Vein Clinics of Chicago LLC?
The NPI for Vein Clinics of Chicago LLC is 1386904621, a Type 2 (organization) record in the CMS NPPES registry.

Providers at this address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-05-24.