Mari Santos, LCSW
NPI 1629613963 · Clinical Social Worker · Rancho Cucamonga, CA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mari Santos, LCSW is a Clinical Social Worker provider in Rancho Cucamonga, CA (NPI 1629613963).
Provider details
- NPI number
- 1629613963
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- No
- License
- 114631 (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
6 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
- 2019-11-11
- Last updated
- 2024-03-08
- Certified
- 2024-03-08
Frequently asked questions
- What is Mari Santos's NPI number?
- Mari Santos's National Provider Identifier (NPI) is 1629613963, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mari Santos's specialty?
- Mari Santos is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Mari Santos located?
- Mari Santos's practice location on file with NPPES is 9668 Milliken Ave Ste 104-183, Rancho Cucamonga, CA 91730-6137.
- What is Mari Santos's phone number?
- The practice phone number listed in the NPPES registry for Mari Santos is (626) 692-5954.
- Does Mari Santos accept Medicare?
- Mari Santos is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mari Santos's NPI active?
- Yes — Mari Santos's NPI (1629613963) is active in the NPPES registry as of the last update on 2024-03-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.