CORNELIA VERNA MATHILDE SEIFFERT LCSW
NPI 1821576828
Social Worker - Clinical in Orange, CA
About Cornelia Verna Mathilde Seiffert Lcsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CORNELIA VERNA MATHILDE SEIFFERT LCSW (NPI 1821576828) is an individual clinical provider in Orange, California, licensed in California (104102) and active in the NPI registry since August 2018. She is enrolled in Medicare PECOS, maintains a secondary practice location in Los Angeles, and is a graduate of Other (2017).
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Location 1
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
Cornelia Verna Mathilde Seiffert Lcsw 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 Reassignments
2Medicare enrollment records show Cornelia Seiffert reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Orange, CA 92868
- Reassigned Medicare billing, California enrollment
Los Angeles, CA 90029
- Reassigned Medicare billing, California enrollment
- 104 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 92868 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 10
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
ORANGE, CA 92868
ORANGE, CA 92868
ORANGE, CA 92868
ORANGE, CA 92868
ORANGE, CA 92868
ORANGE, CA 92868
ORANGE, CA 92868
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 Cornelia Seiffert's NPI number?
The NPI number for Cornelia Seiffert is 1821576828. It was assigned to this individual provider in the NPPES registry on August 1, 2018.
Where is Cornelia Seiffert located?
Cornelia Seiffert practices at 1820 W Orangewood Ave Ste 105, Orange, CA 92868. The listed phone number is (323) 886-2417.
What is Cornelia Seiffert's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Cornelia Seiffert enrolled in Medicare?
Yes. Cornelia Seiffert 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 organizations bill Medicare for Cornelia Seiffert's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Cornelia Seiffert reassigns Medicare benefits to 2 organizations: Cornelia Seiffert, Lcsw, A Licensed Clinical Social Worker Corporation (Orange, CA) and Silver Lake Psychology Inc. (Los Angeles, CA). Each 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 Cornelia Seiffert'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 Cornelia Seiffert was last updated on June 2, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Cornelia Verna Mathilde Seiffert, LCSW · NPI 1821576828
Clinical provider in Orange, California. Individual provider, active in the CMS NPPES registry since August 1, 2018.
## Identity
- **NPI:** 1821576828 (Entity type: Individual)
- **Enumerated:** August 1, 2018
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **State license:** 104102 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1820 W ORANGEWOOD AVE STE 105, Orange, CA 92868-5052
- **Phone:** (323) 886-2417 · **Fax:** (626) 565-1565
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Cornelia Seiffert, Lcsw, A Licensed Clinical Social Worker Corporation (NPI 1164161105, Orange, CA); Silver Lake Psychology Inc. (NPI 1932651817, Los Angeles, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** June 2, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1821576828) · Data from the CMS NPPES public registry.