Peggy Erwin
NPI 1447548235 · Clinical Social Worker · Rialto, CA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Peggy Erwin is a Clinical Social Worker provider in Rialto, CA (NPI 1447548235).
Provider details
- NPI number
- 1447548235
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 84290 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
- Case Manager/Care Coordinator171M00000X
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 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
- 2011-07-14
- Last updated
- 2021-07-08
- Certified
- 2021-07-08
Frequently asked questions
- What is Peggy Erwin's NPI number?
- Peggy Erwin's National Provider Identifier (NPI) is 1447548235, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Peggy Erwin's specialty?
- Peggy Erwin is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Peggy Erwin located?
- Peggy Erwin's practice location on file with NPPES is 850 E Foothill Blvd, Rialto, CA 92376-5230.
- What is Peggy Erwin's phone number?
- The practice phone number listed in the NPPES registry for Peggy Erwin is (909) 421-9200.
- Does Peggy Erwin accept Medicare?
- Peggy Erwin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Peggy Erwin's NPI active?
- Yes — Peggy Erwin's NPI (1447548235) is active in the NPPES registry as of the last update on 2021-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.