Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Russell J Bak, DDS

Dentist in Bolingbrook, IL · enumerated 2006.

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

National Provider Identifier

1659441301

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Registry record

Entity type Individual (Type 1)

Name Dr. Russell J Bak

Credential DDS

Sex Male

Practice address 433 N Bolingbrook Drive, Suite 1, Bolingbrook, IL, 60440

Phone (630) 759-4191

Fax (630) 759-4378

Enumeration date Nov 9, 2006

Last updated in NPPES Apr 24, 2019

Taxonomy & licenses

122300000X Dentist Dental Providers · License 19-024912 (IL) Primary

DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS 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

Is NPI 1659441301 active?

Yes, as of the latest NPPES snapshot, NPI 1659441301 is active (record last updated 2019-04-24).

How do I verify Russell Bak's NPI record?

Cross-check NPI 1659441301 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-04-24.