Michael Isaac Chuang, PHARM.D.
Pharmacist · Martinez, CA
Michael Isaac Chuang, PHARM.D. is a pharmacist with a practice address in Martinez, California, and NPI 1902209356, issued on Sep 30, 2014. Check the license (California 71044, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Michael Isaac Chuang
- Credential
- PHARM.D.
- Primary taxonomy
- Pharmacist 183500000X
- License number
- 71044 CA
Self-reported in NPPES; status is on the state search - Practice location
- 200 Muir RD, Martinez, CA 94553
- Phone
- (408) 891-5698
- Enumerated
- Sep 30, 2014
- Record last updated
- Sep 30, 2014 (not updated in 12 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 200 Muir RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Mona Ahmad, M.D.Physical Medicine & Rehabilitation Physician1881128510
- Eric Alexander, MDNeuromuscular Medicine (Physical Medicine & Rehabilitation) Physician1922180157
- Robert Anderson, MDInternal Medicine Physician1447338538
- May Antonio, PTPhysical Therapist1245553668
Verify Michael Isaac Chuang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 71044Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6.4 times the Medicare Part D claims of the average pharmacist in 2024
765 Medicare Part D claims for 162 beneficiaries, against an average of 119 among the 28,524 providers of this specialty who prescribed in Part D. Brand-name drugs were 46% of claims.
Most prescribed
- Ozempic107 claims
- Humulin N64 claims
- Atorvastatin Calcium62 claims
- Glipizide52 claims
- Metformin Hcl Er48 claims
- Humulin R45 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 Isaac Chuang among 32,533 pharmacist records in California
Michael Isaac Chuang, 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 2014, is newer than 35% of them.
- NPI issued2014 · 35% of these records are older, 59% 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 updated2014 · 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).
149 pharmacist records list a practice address in Martinez
They are 149 of the 1,816 NPPES records with a practice address in Martinez, and 32,533 pharmacist records in California.
All 32,533 in California → Every provider in Martinez → Pharmacist nationwide →
The 8 pharmacist records with the nearest ZIP codes
- Phillip Drum, PHARM.D.Martinez, CA 945531255314019
- Bernadette Dugoni, PHARM DMartinez, CA 945531003929035
- Johanna FinkMartinez, CA 945531821105156
- Raj Joshi, PHARM DMartinez, CA 945531023088135
- Charles King, PHARM.D.Martinez, CA 945531740204296
- Sharon Lee, B.S PHARMACYMartinez, CA 945531275543654
- Robert Malmstrom, PHARM.D.Martinez, CA 945531851310007
- Joy Meier, PHARM.D.Martinez, CA 945531871606525
Common questions
What is Michael Isaac Chuang, PHARM.D.'s NPI number?
Michael Isaac Chuang, PHARM.D.'s National Provider Identifier (NPI) is 1902209356, issued on Sep 30, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Michael Isaac Chuang, PHARM.D. located?
The NPPES record lists a practice address at 200 Muir RD, Martinez, CA, 94553. Phone: (408) 891-5698. Providers update this record themselves, so call before visiting.
How can I verify Michael Isaac Chuang, PHARM.D.'s license?
NPPES lists California license number 71044, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Michael Isaac Chuang, PHARM.D. prescribe under Medicare Part D?
In 2024, Michael Isaac Chuang, PHARM.D. had 765 Medicare Part D claims for 162 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.