MARGARET DUENEZ LCSW
NPI 1598992406
Social Worker - Clinical in Covina, CA
About Margaret Duenez Lcsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARGARET DUENEZ LCSW (NPI 1598992406) is an individual clinical provider in Covina, California, licensed in California (LCS 24326) and active in the NPI registry since June 2009. She is enrolled in Medicare PECOS and is a graduate of Other (2000).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Margaret Duenez Lcsw is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Margaret Duenez reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
La Puente, CA 91744
- Reassigned Medicare billing, California enrollment
- 17 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 91724 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Margaret Duenez's NPI number?
The NPI number for Margaret Duenez is 1598992406. It was assigned to this individual provider in the NPPES registry on June 18, 2009.
Where is Margaret Duenez located?
Margaret Duenez practices at 969 S Village Oaks Dr Ste 201, Covina, CA 91724. The listed phone number is (909) 838-8764.
What is Margaret Duenez's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Margaret Duenez enrolled in Medicare?
Yes. Margaret Duenez is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Margaret Duenez's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Duenez reassigns Medicare benefits to Friends Of Family Health Center (La Puente, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Margaret Duenez's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Margaret Duenez was last updated on October 4, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Margaret Duenez, LCSW · NPI 1598992406
Clinical provider in Covina, California. Individual provider, active in the CMS NPPES registry since June 18, 2009.
## Identity
- **NPI:** 1598992406 (Entity type: Individual)
- **Enumerated:** June 18, 2009
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **State license:** LCS 24326 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 969 S VILLAGE OAKS DR STE 201, Covina, CA 91724-0606
- **Phone:** (909) 838-8764
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Friends Of Family Health Center (NPI 1124758883, La Puente, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2000
## Record status
- **NPPES last updated:** October 4, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1598992406) · Data from the CMS NPPES public registry.