Oscar Perez, LCSW
NPI 1689811911 · Clinical Social Worker · Diamond Bar, CA
Oscar Perez, LCSW is a Clinical Social Worker provider in Diamond Bar, CA (NPI 1689811911).
Provider details
- NPI number
- 1689811911
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- 4524 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
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
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
Mailing address
Registry dates
- Enumerated
- 2009-01-08
- Last updated
- 2009-01-08
Frequently asked questions
- What is Oscar Perez's NPI number?
- Oscar Perez's National Provider Identifier (NPI) is 1689811911, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Oscar Perez's specialty?
- Oscar Perez is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Oscar Perez located?
- Oscar Perez's practice location on file with NPPES is 21660 Copley Dr, Diamond Bar, CA 91765-4173.
- What is Oscar Perez's phone number?
- The practice phone number listed in the NPPES registry for Oscar Perez is (626) 773-3300.
- Is Oscar Perez's NPI active?
- Yes — Oscar Perez's NPI (1689811911) is active in the NPPES registry as of the last update on 2009-01-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.