Gwendolyn Harville Washington, LCSW
NPI 1467509968 · Clinical Social Worker · Rancho Cucamonga, CA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gwendolyn Harville Washington, LCSW is a Clinical Social Worker provider in Rancho Cucamonga, CA (NPI 1467509968).
Provider details
- NPI number
- 1467509968
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW
- Sex
- Female
- Sole proprietor
- Yes
- License
- LCS 22188 (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
- 2007-01-05
- Last updated
- 2013-09-26
Frequently asked questions
- What is Gwendolyn Harville Washington's NPI number?
- Gwendolyn Harville Washington's National Provider Identifier (NPI) is 1467509968, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gwendolyn Harville Washington's specialty?
- Gwendolyn Harville Washington is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Gwendolyn Harville Washington located?
- Gwendolyn Harville Washington's practice location on file with NPPES is 9089 Baseline Rd, Rancho Cucamonga, CA 91730-1295.
- What is Gwendolyn Harville Washington's phone number?
- The practice phone number listed in the NPPES registry for Gwendolyn Harville Washington is (909) 210-5895.
- Does Gwendolyn Harville Washington accept Medicare?
- Gwendolyn Harville Washington is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gwendolyn Harville Washington's NPI active?
- Yes — Gwendolyn Harville Washington's NPI (1467509968) is active in the NPPES registry as of the last update on 2013-09-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.