KAREN ISABEL ALVARENGA
NPI 1245802685
Social Worker in Santa Fe Springs, CA
About Karen Isabel Alvarenga NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KAREN ISABEL ALVARENGA (NPI 1245802685) is an individual social worker in Santa Fe Springs, California, licensed in California (ASW109009) and active in the NPI registry since July 2021. She is enrolled in Medicare PECOS and is a graduate of Other (2022).
NPPES Registry Identity
Specialties & Licenses 4
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Karen Isabel Alvarenga is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Karen Alvarenga reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Santa Fe Springs, CA 90670
- Reassigned Medicare billing, California enrollment
- 156 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.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SANTA FE SPRINGS, CA 90670
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 Karen Alvarenga's NPI number?
The NPI number for Karen Alvarenga is 1245802685. It was assigned to this individual provider in the NPPES registry on July 14, 2021.
Where is Karen Alvarenga located?
Karen Alvarenga practices at 11731 Telegraph Rd, Santa Fe Springs, CA 90670. The listed phone number is (562) 942-8256.
What is Karen Alvarenga's specialty?
The primary specialty registered for this NPI is Social Worker with taxonomy code 104100000X.
Is Karen Alvarenga enrolled in Medicare?
Yes. Karen Alvarenga is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Karen Alvarenga's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Karen Alvarenga reassigns Medicare benefits to Pacific Clinics (Santa Fe Springs, 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 Karen Alvarenga'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 Karen Alvarenga was last updated on July 5, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Karen Isabel Alvarenga · NPI 1245802685
Social Worker provider in Santa Fe Springs, California. Individual provider, active in the CMS NPPES registry since July 14, 2021.
## Identity
- **NPI:** 1245802685 (Entity type: Individual)
- **Enumerated:** July 14, 2021
- **Primary specialty:** Social Worker · taxonomy 104100000X
- **State license:** ASW109009 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 11731 TELEGRAPH RD, Santa Fe Springs, CA 90670-3675
- **Phone:** (562) 942-8256
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Pacific Clinics (NPI 1588322044, Santa Fe Springs, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2022
## Record status
- **NPPES last updated:** July 5, 2023
---
Source: [NPI Profile](https://npiprofile.com/npi/1245802685) · Data from the CMS NPPES public registry.