Michael Tsai
Pharmacist · Victorville, CA
Michael Tsai is a pharmacist with a practice address in Victorville, California, and NPI 1396065538, issued on Jun 10, 2010. Check the license (California RPH41589, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Michael Tsai
- Primary taxonomy
- Pharmacist 183500000X
- License number
- RPH41589 CA
Self-reported in NPPES; status is on the state search - Practice location
- 13790 Linda St, Victorville, CA 92392
- Phone
- (760) 245-6600
- Enumerated
- Jun 10, 2010
- Record last updated
- Jun 10, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (760) 245-1149
- Entity
- Type 1 · individual
8 nearest pharmacist records → All 32,533 in California → Look up another NPI →
Verify Michael Tsai in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license RPH41589Check 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, 97% of the cost of the top drugs
112 Medicare Part D claims for 97 beneficiaries, against an average of 119 among the 28,524 providers of this specialty who prescribed in Part D. Brand-name drugs were 98% 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.
- Shingrix42 claims
- Abrysvo28 claims
- Arexvy27 claims
- Boostrix Tdap13 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.
Michael Tsai among 32,533 pharmacist records in California
Michael Tsai 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 2010, is newer than 12% of them.
- NPI issued2010 · 12% of these records are older, 82% 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 updated2010 · 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).
118 pharmacist records list a practice address in Victorville
They are 118 of the 2,584 NPPES records with a practice address in Victorville, and 32,533 pharmacist records in California.
All 32,533 in California → Every provider in Victorville → Pharmacist nationwide →
The 8 pharmacist records with the nearest ZIP codes
- Tuba BuyuktimkinVictorville, CA 923921154730398
- Armilyn Dizon, PHARM DVictorville, CA 923921952464752
- Stephanie DugganVictorville, CA 923921497037162
- Eugenia Ellis, PHARM DVictorville, CA 923921740343557
- Joseph Hernandez, RPHVictorville, CA 923921063576395
- Yvonne HsiehVictorville, CA 923921710301387
- Phuongvi Le, RPH, PHARMDVictorville, CA 923921841682234
- Eunice Lee, PHARMDVictorville, CA 923921548631377
Common questions
What is Michael Tsai's NPI number?
Michael Tsai's National Provider Identifier (NPI) is 1396065538, issued on Jun 10, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Michael Tsai located?
The NPPES record lists a practice address at 13790 Linda St, Victorville, CA, 92392. Phone: (760) 245-6600. Providers update this record themselves, so call before visiting.
How can I verify Michael Tsai's license?
NPPES lists California license number RPH41589, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Michael Tsai prescribe under Medicare Part D?
In 2024, Michael Tsai had 112 Medicare Part D claims for 97 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.