Ruth Chan, MD
NPI 1659456317 · Pediatrics Physician · Fremont, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ruth Chan, MD is a Pediatrics Physician provider in Fremont, CA (NPI 1659456317).
Provider details
- NPI number
- 1659456317
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A66337 (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
19 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
- 2006-10-25
- Last updated
- 2021-12-13
Frequently asked questions
- What is Ruth Chan's NPI number?
- Ruth Chan's National Provider Identifier (NPI) is 1659456317, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ruth Chan's specialty?
- Ruth Chan is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Ruth Chan located?
- Ruth Chan's practice location on file with NPPES is 39400 Paseo Padre Pkwy, Fremont, CA 94538-2310.
- What is Ruth Chan's phone number?
- The practice phone number listed in the NPPES registry for Ruth Chan is (510) 795-3000.
- Does Ruth Chan accept Medicare?
- Ruth Chan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ruth Chan's NPI active?
- Yes — Ruth Chan's NPI (1659456317) is active in the NPPES registry as of the last update on 2021-12-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.