Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Ernest L. Costello, D.D.S.

Clinic/Center in Arlington Heights, IL · enumerated 2011.

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

National Provider Identifier

1841585981

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Registry record

Entity type Individual (Type 1)

Name Dr. Ernest L. Costello

Credential D.D.S.

Sex Male

Practice address 1510 N Arlington Heights Rd, Arlington Heights, IL, 60004

Phone (847) 259-1111

Fax (847) 259-2222

Enumeration date Jun 16, 2011

Last updated in NPPES Dec 2, 2025

Taxonomy & licenses

261Q00000X Clinic/Center Ambulatory Health Care Facilities · License 019028668 (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

Where does Ernest Costello practice?

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

What is the NPI number for Ernest Costello?

The National Provider Identifier (NPI) for Ernest Costello is 1841585981, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-12-02.