IndividualActive
Winnie Chang
NPI 1316139405 · Emergency Medicine Physician · Fontana, CA
Winnie Chang is a Emergency Medicine Physician provider in Fontana, CA (NPI 1316139405).
Provider details
- NPI number
- 1316139405
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- Yes
- License
- 20A8975 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(89/100 index)
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
9985 Sierra Ave
Fontana, CA 92335-6720
Phone: (909) 427-5000
Street-level locationGet directions
Mailing address
7419 Oxford Ct
Fontana, CA 92336-3500
Registry dates
- Enumerated
- 2007-08-14
- Last updated
- 2021-10-13
- Certified
- 2021-10-13
Frequently asked questions
- What is Winnie Chang's NPI number?
- Winnie Chang's National Provider Identifier (NPI) is 1316139405, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Winnie Chang's specialty?
- Winnie Chang is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Winnie Chang located?
- Winnie Chang's practice location on file with NPPES is 9985 Sierra Ave, Fontana, CA 92335-6720.
- What is Winnie Chang's phone number?
- The practice phone number listed in the NPPES registry for Winnie Chang is (909) 427-5000.
- Is Winnie Chang's NPI active?
- Yes — Winnie Chang's NPI (1316139405) is active in the NPPES registry as of the last update on 2021-10-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.