NPPES file of Aug 9, 2026

Chun Sum Yeung

Ambulatory Care Pharmacist · Oakland, CA

Chun Sum Yeung is an ambulatory care pharmacist with a practice address in Oakland, California, and NPI 1780295816, issued on Aug 12, 2020. Check the license (California 82971, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1780295816
Name
Chun Sum Yeung
Primary taxonomy
Ambulatory Care Pharmacist 1835P2201X
License number
82971 CA
Self-reported in NPPES; status is on the state search
Practice location
3801 Howe St, Oakland, CA 94611
Phone
(510) 752-6141
Enumerated
Aug 12, 2020
Record last updated
Dec 23, 2021 (not updated in 5 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 3801 Howe St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Paula BaesslerPharmacist1407380520
  2. Deempal Bhatt, PHARM.DPharmacist1417393828
  3. Christopher Canlas, DOFamily Medicine Physician1477291615
  4. Runyu Chen, PHARM DAmbulatory Care Pharmacist1902213952
  5. Chi ChiangPharmacist1083149561
  6. Clara Chu, M.D.Family Medicine Physician1659798874

Verify Chun Sum Yeung in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 82971
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

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81% fewer Medicare Part D claims than the average ambulatory care pharmacist in 2024

101 Medicare Part D claims for 82 beneficiaries, against an average of 527 among the 449 providers of this specialty who prescribed in Part D. Brand-name drugs were 87% of claims.

  1. Chun Sum Yeung101
  2. Specialty average527

Most prescribed

  1. Enoxaparin Sodium38 claims
  2. Pradaxa35 claims
  3. Eliquis18 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.

Ambulatory Care Pharmacist providers in California

There are 485 ambulatory care pharmacist records in California.

Other ambulatory care pharmacist records in California

  1. Zohra Abdul, PHARMDRancho Cordova, CA1780507251
  2. Clare AdamsMission Viejo, CA1174995740
  3. Kristine AdzhemyanLos Angeles, CA1306579131
  4. Thuy AgbodikeSacramento, CA1467230748
  5. Omar Ahmed, PHARMDSan Rafael, CA1285254037
  6. Soo Ahn, PHARM.D.Simi Valley, CA1992245971
  7. Genevieve Aichelman, PHARM.D.Lemoore, CA1003273012
  8. Margherita Aikman, PHARMDSacramento, CA1881972669
  9. Anna Akayvan, PHARMACISTChula Vista, CA1053814012
  10. Samer Al Haddadin, PHARMD, J.D.Los Angeles, CA1023392107

Common questions

What is Chun Sum Yeung's NPI number?

Chun Sum Yeung's National Provider Identifier (NPI) is 1780295816, issued on Aug 12, 2020. An NPI identifies a provider in billing; it is not a license.

Where is Chun Sum Yeung located?

The NPPES record lists a practice address at 3801 Howe St, Oakland, CA, 94611. Phone: (510) 752-6141. Providers update this record themselves, so call before visiting.

How can I verify Chun Sum Yeung's license?

NPPES lists California license number 82971, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Chun Sum Yeung prescribe under Medicare Part D?

In 2024, Chun Sum Yeung had 101 Medicare Part D claims for 82 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.