What is Derek Yi's NPI number?

Derek Yi's National Provider Identifier (NPI) is 1083257273, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Derek Yi's specialty?

Derek Yi is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).

Where is Derek Yi located?

Derek Yi's practice location on file with NPPES is 3478 Buskirk Ave Ste 260, Pleasant Hill, CA 94523-4358.

What is Derek Yi's phone number?

The practice phone number listed in the NPPES registry for Derek Yi is (925) 943-1794.

Is Derek Yi's NPI active?

Yes — Derek Yi's NPI (1083257273) is active in the NPPES registry as of the last update on 2025-07-07.

IndividualActive

Derek Yi

NPI 1083257273 · Social Worker · Pleasant Hill, CA

Derek Yi is a Social Worker provider in Pleasant Hill, CA (NPI 1083257273).

Provider details

NPI number: 1083257273
Entity type: Individual
Primary specialty: Social WorkerBehavioral Health & Social Service Providers
Sex: Male
Sole proprietor: No

Specialties & taxonomies

Social WorkerPrimary104100000X
Behavioral Health & Social Service Providers
Case Manager/Care Coordinator171M00000X
Other Service Providers
Community Health Worker172V00000X
Other Service Providers
Student in an Organized Health Care Education/Training Program390200000X
Student, Health Care

Profile Score

Established profile(68/100 index)

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

Registry tenure38% of score
6 yrs in NPPES registry
Profile completeness38% of score
83% of core fields populated
Practice footprint23% of score
5 documented practice locations

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

3478 Buskirk Ave Ste 260

Pleasant Hill, CA 94523-4358

Phone: (925) 943-1794

Street-level locationGet directions

More CA providers

Mailing address

1038 Post St

San Francisco, CA 94109-5603

Additional practice locations (4)

2396 University Ave
East Palo Alto, CA 94303
Phone: (650) 331-1611
8945 Golf Links Rd
Oakland, CA 94605-4124
Phone: (510) 317-1444
1038 Post St
San Francisco, CA 94109-5603
Phone: (415) 775-2636
2015 Pioneer Ct Ste B
San Mateo, CA 94403-1736
Phone: (650) 348-6603

Enumerated: 2019-10-21
Last updated: 2025-07-07
Certified: 2025-07-07

Frequently asked questions

What is Derek Yi's NPI number?: Derek Yi's National Provider Identifier (NPI) is 1083257273, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Derek Yi's specialty?: Derek Yi is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).
Where is Derek Yi located?: Derek Yi's practice location on file with NPPES is 3478 Buskirk Ave Ste 260, Pleasant Hill, CA 94523-4358.
What is Derek Yi's phone number?: The practice phone number listed in the NPPES registry for Derek Yi is (925) 943-1794.
Is Derek Yi's NPI active?: Yes — Derek Yi's NPI (1083257273) is active in the NPPES registry as of the last update on 2025-07-07.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.