Toby Wai Chang, PHARM.D.
Pharmacist · San Francisco, CA
Toby Wai Chang, PHARM.D. is a pharmacist with a practice address in San Francisco, California, and NPI 1922432608, issued on Aug 29, 2013. Check the license (California 69258, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Toby Wai Chang
- Credential
- PHARM.D.
- Primary taxonomy
- Pharmacist 183500000X
- License number
- 69258 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2354 32ND Ave, San Francisco, CA 94116
- Phone
- (415) 577-9583
- Enumerated
- Aug 29, 2013
- Record last updated
- Aug 29, 2013 (not updated in 13 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 Toby Wai Chang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 69258Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% fewer Medicare Part D claims than the average pharmacist in 2024
64 Medicare Part D claims for 54 beneficiaries, against an average of 119 among the 28,524 providers of this specialty who prescribed in Part D.
Most prescribed
- Potassium Citrate Er43 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.
Toby Wai Chang among 32,533 pharmacist records in California
Toby Wai Chang, 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 2013, is newer than 32% of them.
- NPI issued2013 · 32% of these records are older, 65% 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 updated2013 · 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).
1,180 pharmacist records list a practice address in San Francisco
They are 1,180 of the 38,143 NPPES records with a practice address in San Francisco, and 32,533 pharmacist records in California.
All 32,533 in California → Every provider in San Francisco → Pharmacist nationwide →
The 8 pharmacist records with the nearest ZIP codes
- Iris An, PHARM.D.San Francisco, CA 941161225140932
- Donna Cheung, PHARMDSan Francisco, CA 941161891077491
- Yee Hsu, PHARMDSan Francisco, CA 941161053619056
- Pamela Lam, PHARM.D.San Francisco, CA 941161689957227
- Denny LauSan Francisco, CA 941161972804284
- Leon LevySan Francisco, CA 941161861793176
- Elizabeth Potselueff, PHARMDSan Francisco, CA 941161598047037
- Steven Protzel, PHARMDSan Francisco, CA 941161053612366
Common questions
What is Toby Wai Chang, PHARM.D.'s NPI number?
Toby Wai Chang, PHARM.D.'s National Provider Identifier (NPI) is 1922432608, issued on Aug 29, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Toby Wai Chang, PHARM.D. located?
The NPPES record lists a practice address at 2354 32ND Ave, San Francisco, CA, 94116. Phone: (415) 577-9583. Providers update this record themselves, so call before visiting.
How can I verify Toby Wai Chang, PHARM.D.'s license?
NPPES lists California license number 69258, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Toby Wai Chang, PHARM.D. prescribe under Medicare Part D?
In 2024, Toby Wai Chang, PHARM.D. had 64 Medicare Part D claims for 54 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.