Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Fox Valley Endocrinology, LLC

Endocrinology, Diabetes & Metabolism Physician in Geneva, IL · enumerated 2005 · authorized official Steven Bielski, Senior Partner.

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

National Provider Identifier

1538157524

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Registry record

Entity type Organization (Type 2)

Legal business name Fox Valley Endocrinology, LLC

Practice address 302 Randall Rd, Suite 304, Geneva, IL, 60134

Phone (630) 208-6775

Fax (630) 208-7937

Enumeration date Oct 12, 2005

Last updated in NPPES Nov 16, 2009

Taxonomy & classification

207RE0101X Endocrinology, Diabetes & Metabolism Physician Allopathic & Osteopathic Physicians · License 036075882 (IL) Primary

Authorized official

Name Steven Bielski

Title Senior Partner

Phone (630) 208-6775

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

Where is Fox Valley Endocrinology, LLC located?

The practice location on file with NPPES is in Geneva, IL.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2009-11-16. Verify at npiregistry.cms.hhs.gov.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-11-16.