Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Marietta Tan Ong, PHARM.D,
Pharmacist in Redwood City, CA · enumerated 2010.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1528370715
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Registry record
Entity type Individual (Type 1)
Name Marietta Tan Ong
Credential PHARM.D,
Sex Female
Practice address 2150 Roosevelt Ave, Redwood City, CA, 94061
Phone (650) 369-2071
Fax (650) 369-3449
Enumeration date Jul 5, 2010
Last updated in NPPES Jul 5, 2010
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
Is NPI 1528370715 active?
Yes, as of the latest NPPES snapshot, NPI 1528370715 is active (record last updated 2010-07-05).
How do I verify Marietta Ong's NPI record?
Cross-check NPI 1528370715 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-07-05.