Helen Quan, M.D.
NPI 1922281419 · General Practice Physician · Seattle, WA
Enrolled with Medicare as Practitioner - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Helen Quan, M.D. is a General Practice Physician provider in Seattle, WA (NPI 1922281419).
Provider details
- NPI number
- 1922281419
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- MD00019716 (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
18 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
- 2007-12-07
- Last updated
- 2008-02-15
Frequently asked questions
- What is Helen Quan's NPI number?
- Helen Quan's National Provider Identifier (NPI) is 1922281419, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Helen Quan's specialty?
- Helen Quan is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Helen Quan located?
- Helen Quan's practice location on file with NPPES is 6517 35th Ave Sw, Seattle, WA 98126-3005.
- What is Helen Quan's phone number?
- The practice phone number listed in the NPPES registry for Helen Quan is (206) 937-1050.
- Does Helen Quan accept Medicare?
- Helen Quan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Helen Quan's NPI active?
- Yes — Helen Quan's NPI (1922281419) is active in the NPPES registry as of the last update on 2008-02-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.