Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dianna Ambartsumyan, PHARM. D
Pharmacist in Rialto, CA · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1598254609
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Registry record
Entity type Individual (Type 1)
Name Dianna Ambartsumyan
Credential PHARM. D
Sex Female
Practice address 1366 S Riverside Ave, Rialto, CA, 92376
Phone (909) 820-7635
Enumeration date May 3, 2018
Last updated in NPPES May 3, 2018
Taxonomy & licenses
PHARMD · Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy.
About the PHARMD 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.
Frequently asked questions
Where does Dianna Ambartsumyan practice?
The practice location on file with NPPES is in Rialto, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Dianna Ambartsumyan?
The National Provider Identifier (NPI) for Dianna Ambartsumyan is 1598254609, 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 2018-05-03.