Hong-Diep Thi Nguyen, PHARM.D.
Pharmacotherapy Pharmacist · Lancaster, CA
Hong-Diep Thi Nguyen, PHARM.D. is a pharmacotherapy pharmacist with a practice address in Lancaster, California, and NPI 1245300599, issued on Nov 8, 2006. Check the license (California RPH 53510, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Hong-Diep Thi Nguyen
- Credential
- PHARM.D.
- Primary taxonomy
- Pharmacotherapy Pharmacist 1835P1200X
- License number
- RPH 53510 CA
Self-reported in NPPES; status is on the state search - Practice location
- 43112 15TH St W, Lancaster, CA 93534
- Phone
- (661) 726-2357
- Enumerated
- Nov 8, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (661) 726-2203
- Entity
- Type 1 · individual
8 nearest pharmacotherapy pharmacist records → All 605 in California → Look up another NPI →
Also registered at 43112 15TH St W
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Vardan Babayan, PHARMD.Ambulatory Care Pharmacist1215486287
- Julia Backs, CPNP-PCNurse Practitioner1184091290
Verify Hong-Diep Thi 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 RPH 53510Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average pharmacotherapy pharmacist in 2024
19 Medicare Part D claims for 13 beneficiaries, against an average of 395 among the 208 providers of this specialty who prescribed in Part D.
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.
Hong-Diep Thi Nguyen among 605 pharmacotherapy pharmacist records in California
Hong-Diep Thi Nguyen, PHARM.D. is one of 605 pharmacotherapy pharmacist records with a practice address in California. 10% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 60% newer
- In a Medicare fileYes · 10% of these records are
- In the CMS Doctors and Clinicians fileNo · 0% 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 1835P1200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pharmacotherapy Pharmacist providers in California
There are 605 pharmacotherapy pharmacist records in California.
All 605 in California → Every provider in Lancaster → Pharmacotherapy Pharmacist nationwide →
The 8 pharmacotherapy pharmacist records with the nearest ZIP codes
- Melanie YeeChowchilla, CA 936101689050890
- Carlota Andrews, PHARM. D.Clovis, CA 936121912351891
- Francisco Lopez, PHARM.D., R. PH.Madera, CA 936371053746917
- James Gates, PHARM.D.San Luis Obispo, CA 934051629279583
- Eric Gjerdrum, PHARMDSan Luis Obispo, CA 934051831424647
- Ronald Tomasini, RPHSan Luis Obispo, CA 934051245676121
- Richard Thorne, PHARMACISTSan Luis Obispo, CA 934011225181878
- Mallory Cruz, PHARMDFresno, CA 937011114346590
Common questions
What is Hong-Diep Thi Nguyen, PHARM.D.'s NPI number?
Hong-Diep Thi Nguyen, PHARM.D.'s National Provider Identifier (NPI) is 1245300599, issued on Nov 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Hong-Diep Thi Nguyen, PHARM.D. located?
The NPPES record lists a practice address at 43112 15TH St W, Lancaster, CA, 93534. Phone: (661) 726-2357. Providers update this record themselves, so call before visiting.
How can I verify Hong-Diep Thi Nguyen, PHARM.D.'s license?
NPPES lists California license number RPH 53510, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Hong-Diep Thi Nguyen, PHARM.D. prescribe under Medicare Part D?
In 2024, Hong-Diep Thi Nguyen, PHARM.D. had 19 Medicare Part D claims for 13 beneficiaries; the average among pharmacotherapy pharmacist prescribers was 395. 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.