Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Agnieszka B Kumar, DDS

General Practice Dentistry in Crystal Lake, IL · enumerated 2008.

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

National Provider Identifier

1366606204

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Registry record

Entity type Individual (Type 1)

Name Dr. Agnieszka B Kumar

Credential DDS

Sex Female

Practice address 8600 Us Highway 14, Suite 203, Crystal Lake, IL, 60012

Phone (815) 356-0033

Fax (815) 356-0035

Enumeration date Jul 10, 2008

Last updated in NPPES Jul 10, 2008

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 019-025663 (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

What is the NPI number for Agnieszka Kumar?

The National Provider Identifier (NPI) for Agnieszka Kumar is 1366606204, a Type 1 (individual) record in the CMS NPPES registry.

Where does Agnieszka Kumar practice?

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

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-07-10.