Derek Oai La, PHARM. D.
Pharmacist · Corona, CA
Derek Oai La, PHARM. D. is a pharmacist with a practice address in Corona, California, and NPI 1912283615, issued on Oct 25, 2011. Check the license (California 55409, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Derek Oai La
- Credential
- PHARM. D.
- Primary taxonomy
- Pharmacist 183500000X
- License number
- 55409 CA
Self-reported in NPPES; status is on the state search - Practice location
- 6762 Cedar Creek RD, Corona, CA 92880
- Phone
- (714) 209-2877
- Enumerated
- Oct 25, 2011
- Record last updated
- Oct 25, 2011 (not updated in 15 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 →
Verify Derek Oai La in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 55409Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Most of these Medicare Part D claims are vaccines, 100% of the cost of the top drugs
50 Medicare Part D claims for 45 beneficiaries, against an average of 119 among the 28,524 providers of this specialty who prescribed in Part D. Brand-name drugs were 100% of claims.
Most prescribed
Pharmacies often give vaccines under a standing order that names one clinician, and CMS counts every such claim under that clinician's NPI. These claims are therefore not a measure of this clinician's own prescribing.
- Arexvy25 claims
- Shingrix20 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.
Derek Oai La among 32,533 pharmacist records in California
Derek Oai La, 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 2011, is newer than 18% of them.
- NPI issued2011 · 18% of these records are older, 72% 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 updated2011 · 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).
160 pharmacist records list a practice address in Corona
They are 160 of the 3,731 NPPES records with a practice address in Corona, and 32,533 pharmacist records in California.
All 32,533 in California → Every provider in Corona → Pharmacist nationwide →
The 8 pharmacist records with the nearest ZIP codes
- Bich-Chi Cao, PHARM.D.Corona, CA 928801326315177
- Chris Chan, PHARMDCorona, CA 928801245396647
- Nhu Dao, PHARMDCorona, CA 928801245516855
- Diep Le, PHARM.D.Corona, CA 928801891014767
- Cuper Nguyen, PHARM.D.Corona, CA 928801881718799
- Anna Nguyen, PHARM. DCorona, CA 928801235415720
- Lily Nguyen, PHARMACISTCorona, CA 928801144506346
- Katharine Nguyen, PHARM.D.Corona, CA 928801619242534
Common questions
What is Derek Oai La, PHARM. D.'s NPI number?
Derek Oai La, PHARM. D.'s National Provider Identifier (NPI) is 1912283615, issued on Oct 25, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Derek Oai La, PHARM. D. located?
The NPPES record lists a practice address at 6762 Cedar Creek RD, Corona, CA, 92880. Phone: (714) 209-2877. Providers update this record themselves, so call before visiting.
How can I verify Derek Oai La, PHARM. D.'s license?
NPPES lists California license number 55409, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Derek Oai La, PHARM. D. prescribe under Medicare Part D?
In 2024, Derek Oai La, PHARM. D. had 50 Medicare Part D claims for 45 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.