What is Yoon San Chai's NPI number?

Yoon San Chai's National Provider Identifier (NPI) is 1730027954, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Yoon San Chai's specialty?

Yoon San Chai is listed in the NPPES registry with a primary specialty of Registered Nurse (Nursing Service Providers).

Where is Yoon San Chai located?

Yoon San Chai's practice location on file with NPPES is 612 Mariposa Ave Apt 201, Oakland, CA 94610-1304.

What is Yoon San Chai's phone number?

The practice phone number listed in the NPPES registry for Yoon San Chai is (510) 388-2694.

Is Yoon San Chai's NPI active?

Yes — Yoon San Chai's NPI (1730027954) is active in the NPPES registry as of the last update on 2026-03-23.

IndividualActive

Yoon San Chai

NPI 1730027954 · Registered Nurse · Oakland, CA

Yoon San Chai is a Registered Nurse provider in Oakland, CA (NPI 1730027954).

Provider details

NPI number: 1730027954
Entity type: Individual
Primary specialty: Registered NurseNursing Service Providers
Sex: Male
Sole proprietor: Yes
License: 745252 (CA)

Specialties & taxonomies

Registered NursePrimary163W00000XLicense 745252 (CA)
Nursing Service Providers

Profile Score

Established profile(53/100 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

612 Mariposa Ave Apt 201

Oakland, CA 94610-1304

Phone: (510) 388-2694

Street-level locationGet directions

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Mailing address