Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Kathleen S. Lim, DDS and Michael J. Mccartney, DDS

Pediatric Dentistry in Tustin, CA · enumerated 2006 · authorized official Michael Mccartney, Partner/Co-Owner.

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

National Provider Identifier

1679633945

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Registry record

Entity type Organization (Type 2)

Legal business name Kathleen S. Lim, DDS and Michael J. Mccartney, DDS

Practice address 18102 Irvine Blvd, Ste. 101, Tustin, CA, 92780

Phone (714) 838-9120

Enumeration date Dec 9, 2006

Last updated in NPPES Mar 26, 2019

Taxonomy & classification

1223P0221X Pediatric Dentistry Dental Providers Primary

Authorized official

Name Michael Mccartney

Title Partner/Co-Owner

Phone (714) 838-9120

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 Kathleen S. Lim, DDS and Michael J. Mccartney, DDS?

NPPES lists Michael Mccartney (Partner/Co-Owner) as the authorized official for this organization.

What is the NPI number for Kathleen S. Lim, DDS and Michael J. Mccartney, DDS?

The NPI for Kathleen S. Lim, DDS and Michael J. Mccartney, DDS is 1679633945, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-03-26.