Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Leonard Dalag

Vascular & Interventional Radiology Physician in Manteca, CA · enumerated 2015.

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

National Provider Identifier

1689043291

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Registry record

Entity type Individual (Type 1)

Name Leonard Dalag

Sex Male

Practice address 250 Cherry Ln Ste 116, Manteca, CA, 95337

Phone (209) 647-2184

Enumeration date Sep 24, 2015

Last updated in NPPES Oct 12, 2022

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary

2085R0204X Vascular & Interventional Radiology Physician Allopathic & Osteopathic Physicians · License A171850 (CA) Primary

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License 125.067931 (IL) Secondary

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 Leonard Dalag practice?

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

What is the NPI number for Leonard Dalag?

The National Provider Identifier (NPI) for Leonard Dalag is 1689043291, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-10-12.