Leslie De Marcos
NPI 1790440923 · Marriage & Family Therapist · Long Beach, CA
Leslie De Marcos is a Marriage & Family Therapist provider in Long Beach, CA (NPI 1790440923).
Provider details
- NPI number
- 1790440923
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Behavior Technician106S00000X
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
4 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
Mailing address
Registry dates
- Enumerated
- 2021-11-02
- Last updated
- 2026-05-05
- Certified
- 2026-05-05
Frequently asked questions
- What is Leslie De Marcos's NPI number?
- Leslie De Marcos's National Provider Identifier (NPI) is 1790440923, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leslie De Marcos's specialty?
- Leslie De Marcos is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Leslie De Marcos located?
- Leslie De Marcos's practice location on file with NPPES is 3210 Long Beach Blvd, Long Beach, CA 90807-5062.
- What is Leslie De Marcos's phone number?
- The practice phone number listed in the NPPES registry for Leslie De Marcos is (562) 548-6500.
- Is Leslie De Marcos's NPI active?
- Yes — Leslie De Marcos's NPI (1790440923) is active in the NPPES registry as of the last update on 2026-05-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.