Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Leon Darling Pharmacy Inc

Community/Retail Pharmacy in Ontario, CA · enumerated 2006 · authorized official Leon Darling, Pharmacist Owner.

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

National Provider Identifier

1922192335

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Registry record

Entity type Organization (Type 2)

Legal business name Leon Darling Pharmacy Inc

Other name <Unavail>

Practice address 1520 N Mountain Ave, Ste 106, Ontario, CA, 91762

Phone (909) 391-3542

Enumeration date Oct 3, 2006

Last updated in NPPES Mar 7, 2023

Taxonomy & classification

333600000X Pharmacy Suppliers · License PHY331380 (CA) Secondary

3336C0003X Community/Retail Pharmacy Suppliers Primary

Authorized official

Name Leon Darling

Title Pharmacist Owner

Phone (909) 391-3542

Other identifiers

Identifier	Type	State	Issuer
0587189	Other	-	OTHER ID NUMBER-COMMERCIAL NUMBER
PHA 331380	Medicaid	CA	-

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.

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Frequently asked questions

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2023-03-07. Verify at npiregistry.cms.hhs.gov.

Where is Leon Darling Pharmacy Inc located?

The practice location on file with NPPES is in Ontario, CA.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-03-07.