IndividualActive
Viola Liu
NPI 1871732362 · Mental Health Counselor · Union City, CA
Viola Liu is a Mental Health Counselor provider in Union City, CA (NPI 1871732362).
Provider details
- NPI number
- 1871732362
- Entity type
- Individual
- Primary specialty
- Mental Health CounselorBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(79/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 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
2608 Central Ave
Union City, CA 94587-3148
Phone: (510) 675-0600
Street-level locationGet directions
Mailing address
5674 Stoneridge Dr
Pleasanton, CA 94588-8500
Registry dates
- Enumerated
- 2009-02-06
- Last updated
- 2009-02-06
Frequently asked questions
- What is Viola Liu's NPI number?
- Viola Liu's National Provider Identifier (NPI) is 1871732362, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Viola Liu's specialty?
- Viola Liu is listed in the NPPES registry with a primary specialty of Mental Health Counselor (Behavioral Health & Social Service Providers).
- Where is Viola Liu located?
- Viola Liu's practice location on file with NPPES is 2608 Central Ave, Union City, CA 94587-3148.
- What is Viola Liu's phone number?
- The practice phone number listed in the NPPES registry for Viola Liu is (510) 675-0600.
- Is Viola Liu's NPI active?
- Yes — Viola Liu's NPI (1871732362) is active in the NPPES registry as of the last update on 2009-02-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.