THOMAS ROBERT WALTER D.O.
NPI 1124255757
Anesthesiology in Mather, CA
About Thomas Robert Walter D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
THOMAS ROBERT WALTER D.O. (NPI 1124255757) is an individual anesthesiology provider in Mather, California, licensed in California (12633) and active in the NPI registry since June 2009. He is enrolled in Medicare PECOS and is a graduate of At Still University Of Health Sciences, College Of Osteo Med, Kirksville (2005).
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 and accepts Medicare assignment
Thomas Robert Walter D.o. 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 Thomas Walter reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Sacramento, CA 95819
- Reassigned Medicare billing, California enrollment
- 833 clinicians in this Medicare group
Stockton, CA 95210
- 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.
MATHER, CA 95655
MATHER, CA 95655
MATHER, CA 95655
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 Thomas Walter's NPI number?
The NPI number for Thomas Walter is 1124255757. It was assigned to this individual provider in the NPPES registry on June 22, 2009.
Where is Thomas Walter located?
Thomas Walter practices at 10535 Hospital Way, Mather, CA 95655. The listed phone number is (916) 843-7102.
What is Thomas Walter's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Thomas Walter enrolled in Medicare?
Yes. Thomas Walter 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 Thomas Walter's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Walter reassigns Medicare benefits to 2 organizations: Cep America - Anesthesia PC (Sacramento, CA) and Permanente Medical Group Inc (Stockton, 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 Thomas Walter'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 Thomas Walter 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.
# Thomas Robert Walter, D.O. · NPI 1124255757
Anesthesiology physician in Mather, California. Individual provider, active in the CMS NPPES registry since June 22, 2009.
## Identity
- **NPI:** 1124255757 (Entity type: Individual)
- **Enumerated:** June 22, 2009
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 12633 (California)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 10535 HOSPITAL WAY, Mather, CA 95655
- **Phone:** (916) 843-7102
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Cep America - Anesthesia PC (NPI 1770014466, Sacramento, CA); Permanente Medical Group Inc (NPI 1548343510, Stockton, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** At Still University Of Health Sciences, College Of Osteo Med, Kirksville, class of 2005
## Record status
- **NPPES last updated:** February 11, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1124255757) · Data from the CMS NPPES public registry.