NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Daniel Brent Leong, MD

Family Medicine Physician in Merced, CA · enumerated 2008.

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

National Provider Identifier

1518119510

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Daniel Brent Leong
Credential MD
Sex Male
Practice address Merced, CA, 95348
Phone (209) 628-2911
Enumeration date Oct 21, 2008
Last updated in NPPES Dec 21, 2012

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License A105830 (CA) Primary
207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A105830 (CA) Secondary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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 Daniel Leong?
The National Provider Identifier (NPI) for Daniel Leong is 1518119510, a Type 1 (individual) record in the CMS NPPES registry.
Where does Daniel Leong practice?
The practice location on file with NPPES is in Merced, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-12-21.