Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Miss Kathleen J Diehl, DMD

General Practice Dentistry in Lodi, CA · enumerated 2011.

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

National Provider Identifier

1639451495

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Registry record

Entity type Individual (Type 1)

Name Miss Kathleen J Diehl

Credential DMD

Sex Female

Practice address 207 W Oak St, Suite A, Lodi, CA, 95240

Phone (209) 334-0938

Fax (209) 334-4432

Enumeration date Sep 16, 2011

Last updated in NPPES Mar 26, 2025

Taxonomy & licenses

1223G0001X General Practice Dentistry Dental Providers · License 60776 (CA) Primary

DMD · Doctor of Medicine in Dentistry: A licensed dentist; DMD and DDS are equivalent dental degrees. About the DMD 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 Kathleen Diehl practice?

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

What is the NPI number for Kathleen Diehl?

The National Provider Identifier (NPI) for Kathleen Diehl is 1639451495, a Type 1 (individual) record in the CMS NPPES registry.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-03-26.