Gillian Xu
NPI 1306533054 · Family Medicine Physician · Seattle, WA
Enrolled with Medicare as Order and Referring Only - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gillian Xu is a Family Medicine Physician provider in Seattle, WA (NPI 1306533054).
Provider details
- NPI number
- 1306533054
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- OL61688762 (WA)
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
3 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2023-04-21
- Last updated
- 2025-10-06
- Certified
- 2025-10-06
Frequently asked questions
- What is Gillian Xu's NPI number?
- Gillian Xu's National Provider Identifier (NPI) is 1306533054, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gillian Xu's specialty?
- Gillian Xu is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Gillian Xu located?
- Gillian Xu's practice location on file with NPPES is 550 16th Ave Ste 100, Seattle, WA 98122-5636.
- What is Gillian Xu's phone number?
- The practice phone number listed in the NPPES registry for Gillian Xu is (206) 320-2484.
- Does Gillian Xu accept Medicare?
- Gillian Xu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gillian Xu's NPI active?
- Yes — Gillian Xu's NPI (1306533054) is active in the NPPES registry as of the last update on 2025-10-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.