John Elder, MFT
NPI 1831393974 · Clinical Social Worker · Fontana, CA
Enrolled with Medicare as Practitioner - Marriage and Family Therapist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Elder, MFT is a Clinical Social Worker provider in Fontana, CA (NPI 1831393974).
Provider details
- NPI number
- 1831393974
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- MFT
- Sex
- Male
- Sole proprietor
- No
- License
- MFC42730 (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
19 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
- 2007-06-13
- Last updated
- 2008-09-15
Frequently asked questions
- What is John Elder's NPI number?
- John Elder's National Provider Identifier (NPI) is 1831393974, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Elder's specialty?
- John Elder is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is John Elder located?
- John Elder's practice location on file with NPPES is 9961 Sierra Ave, Fontana, CA 92335-6720.
- What is John Elder's phone number?
- The practice phone number listed in the NPPES registry for John Elder is (909) 427-3910.
- Does John Elder accept Medicare?
- John Elder is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Elder's NPI active?
- Yes — John Elder's NPI (1831393974) is active in the NPPES registry as of the last update on 2008-09-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.