Dien Ai Du, PHARM.D.
Pharmacist · Oakland, CA
Dien Ai Du, PHARM.D. is a pharmacist with a practice address in Oakland, California, and NPI 1962586255, issued on Oct 24, 2006. Check the license (California 52057, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Dien Ai Du
- Credential
- PHARM.D.
- Primary taxonomy
- Pharmacist 183500000X
- License number
- 52057 CA
Self-reported in NPPES; status is on the state search - Practice location
- 280 W Macarthur Blvd, Oakland, CA 94611
- Phone
- (510) 752-7124
- Enumerated
- Oct 24, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (510) 752-7684
- Entity
- Type 1 · individual
8 nearest pharmacist records → All 32,533 in California → Look up another NPI →
Also registered at 280 W Macarthur Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Dien Ai Du in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 52057Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average pharmacist in 2024
21 Medicare Part D claims for 11 beneficiaries, against an average of 119 among the 28,524 providers of this specialty who prescribed in Part D.
Most prescribed
- Warfarin Sodium19 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.
Dien Ai Du among 32,533 pharmacist records in California
Dien Ai Du, PHARM.D. 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 2006, is newer than under 1% of them.
- NPI issued2006 · under 1% of these records are older, 94% 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 updated2007 · 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).
413 pharmacist records list a practice address in Oakland
They are 413 of the 18,558 NPPES records with a practice address in Oakland, and 32,533 pharmacist records in California.
All 32,533 in California → Every provider in Oakland → Pharmacist nationwide →
The 8 pharmacist records with the nearest ZIP codes
- Megan Bamberger, PHARM.D.Oakland, CA 946111194810374
- Nora Chovick, PHARM.D.Oakland, CA 946111356430409
- Kristin Edelman, PHARMDOakland, CA 946111578651055
- Gillian Epstein, PHARM.DOakland, CA 946111225139231
- Alice Hwe, PHARM.DOakland, CA 946111417056961
- Ryan Ishimaru, PHARM. DOakland, CA 946111508951930
- Shital Kelshikar, PHARM.D.Oakland, CA 946111093800393
- John Lyckfors, PHARMD DOakland, CA 946111447347828
Common questions
What is Dien Ai Du, PHARM.D.'s NPI number?
Dien Ai Du, PHARM.D.'s National Provider Identifier (NPI) is 1962586255, issued on Oct 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Dien Ai Du, PHARM.D. located?
The NPPES record lists a practice address at 280 W Macarthur Blvd, Oakland, CA, 94611. Phone: (510) 752-7124. Providers update this record themselves, so call before visiting.
How can I verify Dien Ai Du, PHARM.D.'s license?
NPPES lists California license number 52057, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Dien Ai Du, PHARM.D. prescribe under Medicare Part D?
In 2024, Dien Ai Du, PHARM.D. had 21 Medicare Part D claims for 11 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.