CORNELIA SEIFFERT, LCSW, A LICENSED CLINICAL SOCIAL WORKER CORPORATION
NPI 1164161105
Social Worker - Clinical in Orange, CA
About Cornelia Seiffert, Lcsw, A Licensed Clinical Social Worker Corporation NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CORNELIA SEIFFERT, LCSW, A LICENSED CLINICAL SOCIAL WORKER CORPORATION (NPI 1164161105) is a healthcare organization registered as a clinical in Orange, California and active in the NPI registry since May 2022. The organization lists Cornelia Seiffert, Lcsw/owner, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Cornelia Seiffert, Lcsw, A Licensed Clinical Social Worker Corporation is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Cornelia Seiffert, Lcsw, A Licensed Clinical Social Worker Corporation, which bills Medicare for the services this clinician delivers.
Clinician (1)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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, Lcsw, A Licensed Clinical Social Worker Corporation's NPI number?
The NPI number for Cornelia Seiffert, Lcsw, A Licensed Clinical Social Worker Corporation is 1164161105. It was assigned to this organization in the NPPES registry on May 28, 2022.
Where is Cornelia Seiffert, Lcsw, A Licensed Clinical Social Worker Corporation located?
Cornelia Seiffert, Lcsw, A Licensed Clinical Social Worker Corporation is located at 1820 W Orangewood Ave Ste 105, Orange, CA 92868. The listed phone number is (323) 886-2417.
What is Cornelia Seiffert, Lcsw, A Licensed Clinical Social Worker Corporation's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Cornelia Seiffert, Lcsw, A Licensed Clinical Social Worker Corporation enrolled in Medicare?
Yes. Cornelia Seiffert, Lcsw, A Licensed Clinical Social Worker Corporation is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Cornelia Seiffert, Lcsw, A Licensed Clinical Social Worker Corporation?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Clinical Social Worker) reassigns their Medicare billing to Cornelia Seiffert, Lcsw, A Licensed Clinical Social Worker Corporation. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Cornelia Seiffert, Lcsw, A Licensed Clinical Social Worker Corporation 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 Seiffert, Lcsw, A Licensed Clinical Social Worker Corporation · NPI 1164161105
Clinical organization in Orange, California. Organization record, active in the CMS NPPES registry since May 28, 2022.
## Identity
- **NPI:** 1164161105 (Entity type: Organization)
- **Enumerated:** May 28, 2022
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **Organization subpart:** No
- **Authorized official:** Cornelia Seiffert, LCSW/OWNER
## Practice location
- **Address:** 1820 W ORANGEWOOD AVE STE 105, Orange, CA 92868-5052
- **Phone:** (323) 886-2417
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Clinical Social Worker) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 2, 2022
- **Other identifiers:** Medicaid 225NQ40K (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1164161105) · Data from the CMS NPPES public registry.