DR. CHRISTOPHER WILLIAM WALKER M.D.
NPI 1851372130
Family Medicine in Travis Air Force Base, CA
About Dr. Christopher William Walker M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CHRISTOPHER WILLIAM WALKER M.D. (NPI 1851372130) is an individual family medicine provider in Travis Air Force Base, California, licensed in Indiana (01054419A) and active in the NPI registry since November 2005. He is enrolled in Medicare PECOS and is a graduate of Uniformed Services Uhs Fe Hebert School Of Med (1998).
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
Dr. Christopher William Walker M.d. 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 Christopher Walker reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Vallejo, CA 94589
- 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94535 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 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
TRAVIS AFB, CA 94535
TRAVIS AFB, CA 94535
TRAVIS AFB, CA 94535
TRAVIS AFB, CA 94535
TRAVIS AFB, CA 94535
TRAVIS AFB, CA 94535
TRAVIS AFB, CA 94535
TRAVIS AFB, CA 94535
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 Christopher Walker's NPI number?
The NPI number for Christopher Walker is 1851372130. It was assigned to this individual provider in the NPPES registry on November 14, 2005.
Where is Christopher Walker located?
Christopher Walker practices at David Grant Medical Center 101 Bodin Circle, Travis Air Force Base, CA 94535. The listed phone number is (707) 423-3735.
What is Christopher Walker's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Christopher Walker enrolled in Medicare?
Yes. Christopher Walker 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 Christopher Walker's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Christopher Walker reassigns Medicare benefits to Permanente Medical Group Inc (Vallejo, 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 Christopher Walker'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 Christopher Walker was last updated on December 23, 2021. 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. Christopher William Walker, M.D. · NPI 1851372130
Family Medicine physician in Travis Air Force Base, California. Individual provider, active in the CMS NPPES registry since November 14, 2005.
## Identity
- **NPI:** 1851372130 (Entity type: Individual)
- **Enumerated:** November 14, 2005
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 01054419A (Indiana)
- **Sole proprietor:** No
## Practice location
- **Address:** DAVID GRANT MEDICAL CENTER, 101 BODIN CIRCLE, Travis Air Force Base, CA 94535
- **Phone:** (707) 423-3735
## 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:** Permanente Medical Group Inc (NPI 1336222397, Vallejo, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Uniformed Services Uhs Fe Hebert School Of Med, class of 1998
## Record status
- **NPPES last updated:** December 23, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1851372130) · Data from the CMS NPPES public registry.