Elaine Ong, M.D.
NPI 1053499806 · Pediatrics Physician · Hayward, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Elaine Ong, M.D. is a Pediatrics Physician provider in Hayward, CA (NPI 1053499806).
Provider details
- NPI number
- 1053499806
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A64839 (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
- 2006-11-01
- Last updated
- 2021-12-06
Frequently asked questions
- What is Elaine Ong's NPI number?
- Elaine Ong's National Provider Identifier (NPI) is 1053499806, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Elaine Ong's specialty?
- Elaine Ong is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Elaine Ong located?
- Elaine Ong's practice location on file with NPPES is 27303 Sleepy Hollow Ave S, Hayward, CA 94545-4203.
- What is Elaine Ong's phone number?
- The practice phone number listed in the NPPES registry for Elaine Ong is (510) 454-1000.
- Does Elaine Ong accept Medicare?
- Elaine Ong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Elaine Ong's NPI active?
- Yes — Elaine Ong's NPI (1053499806) is active in the NPPES registry as of the last update on 2021-12-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.