Warren Chang, PA-C
NPI 1487322020 · Physician Assistant · Seattle, WA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Warren Chang, PA-C is a Physician Assistant provider in Seattle, WA (NPI 1487322020).
Provider details
- NPI number
- 1487322020
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
- License
- PA61353398 (WA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 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
- 2021-08-30
- Last updated
- 2023-06-22
- Certified
- 2023-06-21
Frequently asked questions
- What is Warren Chang's NPI number?
- Warren Chang's National Provider Identifier (NPI) is 1487322020, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Warren Chang's specialty?
- Warren Chang is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Warren Chang located?
- Warren Chang's practice location on file with NPPES is 325 9th Ave, Seattle, WA 98104-2420.
- What is Warren Chang's phone number?
- The practice phone number listed in the NPPES registry for Warren Chang is (206) 520-5000.
- Does Warren Chang accept Medicare?
- Warren Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Warren Chang's NPI active?
- Yes — Warren Chang's NPI (1487322020) is active in the NPPES registry as of the last update on 2023-06-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.