Vivianna Wu, DO
NPI 1891373981 · Family Medicine Physician · Round Rock, TX
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Vivianna Wu, DO is a Family Medicine Physician provider in Round Rock, TX (NPI 1891373981).
Provider details
- NPI number
- 1891373981
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Female
- Sole proprietor
- No
- License
- U5839 (TX)
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
5 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Lisinopril | 20 | 11 |
| Levothyroxine Sodium | 12 | — |
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
Additional practice locations (1)
- 400 W Lyndon B Johnson Fwy Ste 220Irving, TX 75063-3700Phone: (972) 817-1000
Registry dates
- Enumerated
- 2021-03-30
- Last updated
- 2026-01-21
- Certified
- 2026-01-21
Frequently asked questions
- What is Vivianna Wu's NPI number?
- Vivianna Wu's National Provider Identifier (NPI) is 1891373981, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Vivianna Wu's specialty?
- Vivianna Wu is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Vivianna Wu located?
- Vivianna Wu's practice location on file with NPPES is 425 University Blvd, Round Rock, TX 78665-1360.
- What is Vivianna Wu's phone number?
- The practice phone number listed in the NPPES registry for Vivianna Wu is (512) 509-0200.
- Does Vivianna Wu accept Medicare?
- Vivianna Wu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Vivianna Wu's NPI active?
- Yes — Vivianna Wu's NPI (1891373981) is active in the NPPES registry as of the last update on 2026-01-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.