Chun Sum Yeung
NPI 1780295816 · Ambulatory Care Pharmacist · Oakland, CA
Chun Sum Yeung is a Ambulatory Care Pharmacist provider in Oakland, CA (NPI 1780295816).
Provider details
- NPI number
- 1780295816
- Entity type
- Individual
- Primary specialty
- Ambulatory Care PharmacistPharmacy Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 82971 (CA)
Specialties & taxonomies
Pharmacy Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Enoxaparin Sodium | 38 | 31 |
| Dabigatran Etexilate Mesylatebrand: Pradaxa | 35 | 29 |
| Apixabanbrand: Eliquis | 18 | 15 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-08-12
- Last updated
- 2021-12-23
- Certified
- 2021-12-23
Frequently asked questions
- What is Chun Sum Yeung's NPI number?
- Chun Sum Yeung's National Provider Identifier (NPI) is 1780295816, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chun Sum Yeung's specialty?
- Chun Sum Yeung is listed in the NPPES registry with a primary specialty of Ambulatory Care Pharmacist (Pharmacy Service Providers).
- Where is Chun Sum Yeung located?
- Chun Sum Yeung's practice location on file with NPPES is 3801 Howe St, Oakland, CA 94611-5312.
- What is Chun Sum Yeung's phone number?
- The practice phone number listed in the NPPES registry for Chun Sum Yeung is (510) 752-6141.
- Is Chun Sum Yeung's NPI active?
- Yes — Chun Sum Yeung's NPI (1780295816) is active in the NPPES registry as of the last update on 2021-12-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.