What is Margaret Ong's NPI number?

Margaret Ong's National Provider Identifier (NPI) is 1558235499, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Margaret Ong's specialty?

Margaret Ong is listed in the NPPES registry with a primary specialty of Registered Nurse (Nursing Service Providers).

Where is Margaret Ong located?

Margaret Ong's practice location on file with NPPES is 9454 Twin Trails Dr Unit 204, San Diego, CA 92129-2631.

What is Margaret Ong's phone number?

The practice phone number listed in the NPPES registry for Margaret Ong is (858) 900-6453.

Is Margaret Ong's NPI active?

Yes — Margaret Ong's NPI (1558235499) is active in the NPPES registry as of the last update on 2025-10-02.

IndividualActive

Margaret Ong

NPI 1558235499 · Registered Nurse · San Diego, CA

Margaret Ong is a Registered Nurse provider in San Diego, CA (NPI 1558235499).

Provider details

NPI number: 1558235499
Entity type: Individual
Primary specialty: Registered NurseNursing Service Providers
Sex: Female
Sole proprietor: Yes
License: 625392 (CA)

Specialties & taxonomies

Registered NursePrimary163W00000XLicense 625392 (CA)
Nursing Service Providers

Profile Score

Established profile(54/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
Under 1 yr in 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

9454 Twin Trails Dr Unit 204

San Diego, CA 92129-2631

Phone: (858) 900-6453

Street-level locationGet directions

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Mailing address