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Mary Gilliam, LCSW
NPI 1518347343 · Clinical Social Worker · Fontana, CA
Mary Gilliam, LCSW is a Clinical Social Worker provider in Fontana, CA (NPI 1518347343).
Provider details
- NPI number
- 1518347343
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- LCS14326 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(74/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 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
17284 Slover Ave
Suite #105
Fontana, CA 92337-7584
Phone: (909) 609-2800
Fax: (909) 609-3805
Street-level locationGet directions
Mailing address
17284 Slover Ave
Fontana, CA 92337-7584
Registry dates
- Enumerated
- 2015-06-06
- Last updated
- 2015-06-06
Frequently asked questions
- What is Mary Gilliam's NPI number?
- Mary Gilliam's National Provider Identifier (NPI) is 1518347343, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Gilliam's specialty?
- Mary Gilliam is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Mary Gilliam located?
- Mary Gilliam's practice location on file with NPPES is 17284 Slover Ave, Fontana, CA 92337-7584.
- What is Mary Gilliam's phone number?
- The practice phone number listed in the NPPES registry for Mary Gilliam is (909) 609-2800.
- Is Mary Gilliam's NPI active?
- Yes — Mary Gilliam's NPI (1518347343) is active in the NPPES registry as of the last update on 2015-06-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.