Wei (wendy) Diao, MD
NPI 1568849743 · Family Medicine Physician · Oakland, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Wei (wendy) Diao, MD is a Family Medicine Physician provider in Oakland, CA (NPI 1568849743).
Provider details
- NPI number
- 1568849743
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- A144291 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 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 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 143 | 47 |
| Losartan Potassium | 79 | 21 |
| Amlodipine Besylate | 47 | 16 |
| Hydrochlorothiazide | 35 | 11 |
| Levothyroxine Sodium | 35 | 12 |
| Alendronate Sodium | 33 | 12 |
| Lisinopril | 31 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-04-27
- Last updated
- 2022-02-11
Frequently asked questions
- What is Wei (wendy) Diao's NPI number?
- Wei (wendy) Diao's National Provider Identifier (NPI) is 1568849743, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Wei (wendy) Diao's specialty?
- Wei (wendy) Diao is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Wei (wendy) Diao located?
- Wei (wendy) Diao's practice location on file with NPPES is 1800 Harrison St Fl 9th, Oakland, CA 94612.
- What is Wei (wendy) Diao's phone number?
- The practice phone number listed in the NPPES registry for Wei (wendy) Diao is (510) 625-6600.
- Does Wei (wendy) Diao accept Medicare?
- Wei (wendy) Diao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Wei (wendy) Diao's NPI active?
- Yes — Wei (wendy) Diao's NPI (1568849743) is active in the NPPES registry as of the last update on 2022-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.