Ngan Nguyen
Pharmacist · Hayward, CA
Ngan Nguyen is a pharmacist with a practice address in Hayward, California, and NPI 1285009019, issued on Dec 4, 2015. Check the license (California 73830, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ngan Nguyen
- Primary taxonomy
- Pharmacist 183500000X
- License number
- 73830 CA
Self-reported in NPPES; status is on the state search - Practice location
- 23958 Hesperian Blvd, Hayward, CA 94541
- Phone
- (510) 786-9174
- Enumerated
- Dec 4, 2015
- Record last updated
- Dec 21, 2020 (not updated in 6 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest pharmacist records → All 32,533 in California → Look up another NPI →
Also registered at 23958 Hesperian Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ngan Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 73830Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
34% fewer Medicare Part D claims than the average pharmacist in 2024
79 Medicare Part D claims for 17 beneficiaries, against an average of 119 among the 28,524 providers of this specialty who prescribed in Part D. Brand-name drugs were 58% of claims.
Most prescribed
- Oxaliplatin11 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Ngan Nguyen among 32,533 pharmacist records in California
Ngan Nguyen is one of 32,533 pharmacist records with a practice address in California. 15% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 41% of them.
- NPI issued2015 · 41% of these records are older, 53% newer
- In a Medicare fileYes · 15% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2020 · 76% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 183500000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
150 pharmacist records list a practice address in Hayward
They are 150 of the 3,993 NPPES records with a practice address in Hayward, and 32,533 pharmacist records in California.
All 32,533 in California → Every provider in Hayward → Pharmacist nationwide →
The 8 pharmacist records with the nearest ZIP codes
- Francis ChengHayward, CA 945411225314081
- Tien Dang, PHARM.DHayward, CA 945411528464716
- Stephanie Haire, PHARM.DHayward, CA 945411346326949
- Shari Joseph, RPHHayward, CA 945411497028856
- Khoi Lam, PHARMDHayward, CA 945411033474754
- May Laxen, PHARM.D, FASCPHayward, CA 945411245334663
- Jennifer LeHayward, CA 945411114203544
- Ky NgoHayward, CA 945411932420734
Common questions
What is Ngan Nguyen's NPI number?
Ngan Nguyen's National Provider Identifier (NPI) is 1285009019, issued on Dec 4, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Ngan Nguyen located?
The NPPES record lists a practice address at 23958 Hesperian Blvd, Hayward, CA, 94541. Phone: (510) 786-9174. Providers update this record themselves, so call before visiting.
How can I verify Ngan Nguyen's license?
NPPES lists California license number 73830, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Ngan Nguyen prescribe under Medicare Part D?
In 2024, Ngan Nguyen had 79 Medicare Part D claims for 17 beneficiaries; the average among pharmacist prescribers was 119. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.