William Tan Do, PHARM.D., BCPS
Ambulatory Care Pharmacist · Oakland, CA
William Tan Do, PHARM.D., BCPS is an ambulatory care pharmacist with a practice address in Oakland, California, and NPI 1699446252, issued on Sep 23, 2021. Check the license (California 74057, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Tan Do
- Credential
- PHARM.D., BCPS
- Primary taxonomy
- Ambulatory Care Pharmacist 1835P2201X
- License number
- 74057 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3772 Howe St., Ground Floor G30, Oakland, CA 94611
- Phone
- (510) 752-6684
- Enumerated
- Sep 23, 2021
- Record last updated
- Sep 23, 2021 (not updated in 5 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest ambulatory care pharmacist records → All 485 in California → Look up another NPI →
Verify William Tan Do in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 74057Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
42% more Medicare Part D claims than the average ambulatory care pharmacist in 2024
749 Medicare Part D claims for 137 beneficiaries, against an average of 527 among the 449 providers of this specialty who prescribed in Part D. Brand-name drugs were 62% of claims.
Most prescribed
- Insulin Glargine-Yfgn197 claims
- Humalog102 claims
- Humalog Kwikpen U-100102 claims
- Atorvastatin Calcium58 claims
- Lisinopril42 claims
- Losartan Potassium26 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.
William Tan Do among 485 ambulatory care pharmacist records in California
William Tan Do, PHARM.D., BCPS is one of 485 ambulatory care pharmacist records with a practice address in California. 39% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 70% of them.
- NPI issued2021 · 70% of these records are older, 23% newer
- In a Medicare fileYes · 39% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2021 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1835P2201X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ambulatory Care Pharmacist providers in California
There are 485 ambulatory care pharmacist records in California.
All 485 in California → Every provider in Oakland → Ambulatory Care Pharmacist nationwide →
The 8 ambulatory care pharmacist records with the nearest ZIP codes
- Runyu Chen, PHARM DOakland, CA 946111902213952
- Lien Ha, PHARMDOakland, CA 946111811448095
- Nika Kaabi, PHARMDOakland, CA 946111285314658
- Tiffany Lee-ChanOakland, CA 946111285910588
- Michal Mingura, PHARMDOakland, CA 946111225488505
- Janice Park, PHARM.D.Oakland, CA 946111801406095
- An PhamOakland, CA 946111497395271
- Yesenia Revuelta-Ozuna, PHARM.D.Oakland, CA 946111528844727
Common questions
What is William Tan Do, PHARM.D., BCPS's NPI number?
William Tan Do, PHARM.D., BCPS's National Provider Identifier (NPI) is 1699446252, issued on Sep 23, 2021. An NPI identifies a provider in billing; it is not a license.
Where is William Tan Do, PHARM.D., BCPS located?
The NPPES record lists a practice address at 3772 Howe St., Ground Floor G30, Oakland, CA, 94611. Phone: (510) 752-6684. Providers update this record themselves, so call before visiting.
How can I verify William Tan Do, PHARM.D., BCPS's license?
NPPES lists California license number 74057, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does William Tan Do, PHARM.D., BCPS prescribe under Medicare Part D?
In 2024, William Tan Do, PHARM.D., BCPS had 749 Medicare Part D claims for 137 beneficiaries; the average among ambulatory care pharmacist prescribers was 527. 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.