What is Grace Yoon's NPI number?

Grace Yoon's National Provider Identifier (NPI) is 1871270553, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Grace Yoon's specialty?

Grace Yoon is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).

Where is Grace Yoon located?

Grace Yoon's practice location on file with NPPES is 265 S Randolph Ave Ste 160, Brea, CA 92821-5785.

What is Grace Yoon's phone number?

The practice phone number listed in the NPPES registry for Grace Yoon is (934) 271-4494.

Is Grace Yoon's NPI active?

Yes — Grace Yoon's NPI (1871270553) is active in the NPPES registry as of the last update on 2025-08-08.

IndividualActive

Grace Yoon

NPI 1871270553 · Marriage & Family Therapist · Brea, CA

Grace Yoon is a Marriage & Family Therapist provider in Brea, CA (NPI 1871270553).

Provider details

NPI number: 1871270553
Entity type: Individual
Primary specialty: Marriage & Family TherapistBehavioral Health & Social Service Providers
Sex: Female
Sole proprietor: Yes

Specialties & taxonomies

Marriage & Family TherapistPrimary106H00000X
Behavioral Health & Social Service Providers

Profile Score

Established profile(52/100 index)

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

Registry tenure38% of score
2 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

265 S Randolph Ave Ste 160

Brea, CA 92821-5785

Phone: (934) 271-4494

Street-level locationGet directions

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Mailing address