IndividualActive
William Chen
NPI 1538525480 · Mental Health Counselor · Garden Grove, CA
William Chen is a Mental Health Counselor provider in Garden Grove, CA (NPI 1538525480).
Provider details
- NPI number
- 1538525480
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(71/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 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
12912 Brookhurst St Ste 480
Garden Grove, CA 92840-4867
Phone: (714) 636-6286
Street-level locationGet directions
Mailing address
18400 Santa Yolanda Cir
Fountain Valley, CA 92708-5635
Additional practice locations (1)
- 1231 E Dyer Rd Ste 135Santa Ana, CA 92705-5643Phone: (714) 659-6385
Registry dates
- Enumerated
- 2016-01-07
- Last updated
- 2021-06-08
- Certified
- 2021-06-08
Frequently asked questions
- What is William Chen's NPI number?
- William Chen's National Provider Identifier (NPI) is 1538525480, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Chen's specialty?
- William Chen is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is William Chen located?
- William Chen's practice location on file with NPPES is 12912 Brookhurst St Ste 480, Garden Grove, CA 92840-4867.
- What is William Chen's phone number?
- The practice phone number listed in the NPPES registry for William Chen is (714) 636-6286.
- Is William Chen's NPI active?
- Yes — William Chen's NPI (1538525480) is active in the NPPES registry as of the last update on 2021-06-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.