Ruth Chiang Kao, M.D.
NPI 1821383464 · Pediatrics Physician · Orange, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ruth Chiang Kao, M.D. is a Pediatrics Physician provider in Orange, CA (NPI 1821383464).
Provider details
- NPI number
- 1821383464
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A124362 (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
15 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
- 2011-06-11
- Last updated
- 2022-01-10
Frequently asked questions
- What is Ruth Chiang Kao's NPI number?
- Ruth Chiang Kao's National Provider Identifier (NPI) is 1821383464, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ruth Chiang Kao's specialty?
- Ruth Chiang Kao is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Ruth Chiang Kao located?
- Ruth Chiang Kao's practice location on file with NPPES is 505 S Main St, Orange, CA 92868-4509.
- What is Ruth Chiang Kao's phone number?
- The practice phone number listed in the NPPES registry for Ruth Chiang Kao is (714) 456-5631.
- Does Ruth Chiang Kao accept Medicare?
- Ruth Chiang Kao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ruth Chiang Kao's NPI active?
- Yes — Ruth Chiang Kao's NPI (1821383464) is active in the NPPES registry as of the last update on 2022-01-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.