Diana Ong, M.D.
NPI 1649701608 · Student in an Organized Health Care Education/Training Program · Oakland, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diana Ong, M.D. is a Student in an Organized Health Care Education/Training Program provider in Oakland, CA (NPI 1649701608).
Provider details
- NPI number
- 1649701608
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2017-03-22
- Last updated
- 2021-12-17
Frequently asked questions
- What is Diana Ong's NPI number?
- Diana Ong's National Provider Identifier (NPI) is 1649701608, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diana Ong's specialty?
- Diana Ong is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Diana Ong located?
- Diana Ong's practice location on file with NPPES is 275 W Macarthur Blvd, Oakland, CA 94611-5641.
- What is Diana Ong's phone number?
- The practice phone number listed in the NPPES registry for Diana Ong is (510) 752-1000.
- Does Diana Ong accept Medicare?
- Diana Ong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diana Ong's NPI active?
- Yes — Diana Ong's NPI (1649701608) is active in the NPPES registry as of the last update on 2021-12-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.