Helen Chang, M.D.
NPI 1275577256 · Pediatrics Physician · Palo Alto, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Helen Chang, M.D. is a Pediatrics Physician provider in Palo Alto, CA (NPI 1275577256).
Provider details
- NPI number
- 1275577256
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A90968 (CA)
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
20 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.
Practice location
Mailing address
Additional practice locations (1)
- 301 Industrial RdSan Carlos, CA 94070-2603Phone: (650) 596-4100
Registry dates
- Enumerated
- 2006-06-16
- Last updated
- 2020-05-28
- Certified
- 2020-05-28
Frequently asked questions
- What is Helen Chang's NPI number?
- Helen Chang's National Provider Identifier (NPI) is 1275577256, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Helen Chang's specialty?
- Helen Chang is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Helen Chang located?
- Helen Chang's practice location on file with NPPES is 795 El Camino Real, Palo Alto, CA 94301-2302.
- What is Helen Chang's phone number?
- The practice phone number listed in the NPPES registry for Helen Chang is (650) 853-6558.
- Does Helen Chang accept Medicare?
- Helen Chang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Helen Chang's NPI active?
- Yes — Helen Chang's NPI (1275577256) is active in the NPPES registry as of the last update on 2020-05-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.