DR. CHRISTINA MARIE KERWIN AU.D.
NPI 1033443940
Audiologist in Santa Clara, CA
About Dr. Christina Marie Kerwin Au.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CHRISTINA MARIE KERWIN AU.D. (NPI 1033443940) is an individual audiologist in Santa Clara, California, licensed in California (2696) and active in the NPI registry since September 2009.
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)
Dr. Christina Marie Kerwin Au.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Christina Kerwin reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Santa Clara, CA 95051
- Reassigned Medicare billing, California enrollment
- 20,078 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 CLARA, CA 95051
SANTA CLARA, CA 95051
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 Christina Kerwin's NPI number?
The NPI number for Christina Kerwin is 1033443940. It was assigned to this individual provider in the NPPES registry on September 24, 2009.
Where is Christina Kerwin located?
Christina Kerwin practices at 710 Lawrence Expy, Santa Clara, CA 95051. The listed phone number is (408) 851-2950.
What is Christina Kerwin's specialty?
The primary specialty registered for this NPI is Audiologist with taxonomy code 231H00000X.
Is Christina Kerwin enrolled in Medicare?
Yes. Christina Kerwin is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Christina Kerwin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Christina Kerwin reassigns Medicare benefits to Permanente Medical Group Inc (Santa Clara, 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 Christina Kerwin'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 Christina Kerwin was last updated on February 11, 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.
# Dr. Christina Marie Kerwin, AU.D. · NPI 1033443940
Audiologist provider in Santa Clara, California. Individual provider, active in the CMS NPPES registry since September 24, 2009.
## Identity
- **NPI:** 1033443940 (Entity type: Individual)
- **Enumerated:** September 24, 2009
- **Primary specialty:** Audiologist · taxonomy 231H00000X
- **State license:** 2696 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 710 LAWRENCE EXPY, Santa Clara, CA 95051-5173
- **Phone:** (408) 851-2950
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Bills Medicare through:** Permanente Medical Group Inc (NPI 1073606299, Santa Clara, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** February 11, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1033443940) · Data from the CMS NPPES public registry.