IndividualActive
Hollis Tsoi, PSY.D.
NPI 1588919377 · Clinical Psychologist · Carlsbad, CA
Hollis Tsoi, PSY.D. is a Clinical Psychologist provider in Carlsbad, CA (NPI 1588919377).
Provider details
- NPI number
- 1588919377
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PSY.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 30778 (CA)
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
13 yrs in NPPES 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
5838 Edison Pl Ste 100
Carlsbad, CA 92008-5520
Phone: (626) 272-4967
Street-level locationGet directions
Mailing address
Po Box 2441
San Gabriel, CA 91778-2441
Registry dates
- Enumerated
- 2012-07-17
- Last updated
- 2025-07-21
- Certified
- 2025-07-21
Frequently asked questions
- What is Hollis Tsoi's NPI number?
- Hollis Tsoi's National Provider Identifier (NPI) is 1588919377, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Hollis Tsoi's specialty?
- Hollis Tsoi is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Hollis Tsoi located?
- Hollis Tsoi's practice location on file with NPPES is 5838 Edison Pl Ste 100, Carlsbad, CA 92008-5520.
- What is Hollis Tsoi's phone number?
- The practice phone number listed in the NPPES registry for Hollis Tsoi is (626) 272-4967.
- Is Hollis Tsoi's NPI active?
- Yes — Hollis Tsoi's NPI (1588919377) is active in the NPPES registry as of the last update on 2025-07-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.