DR. CHRISTOPHER JAMES WALKER M.D.
NPI 1235492901
Radiology - Diagnostic Radiology in Apo, AP
About Dr. Christopher James Walker M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. CHRISTOPHER JAMES WALKER M.D. (NPI 1235492901) is an individual diagnostic radiology provider in Apo, AP, licensed in Texas (R4161) and active in the NPI registry since June 2012. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Christopher James Walker M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
6Medicare enrollment records show Christopher Walker reassigns Medicare billing to 6 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Tehachapi, CA 93561
- Reassigned Medicare billing, California enrollment
- 192 clinicians in this Medicare group
Duncan, OK 73533
- Reassigned Medicare billing, Texas enrollment
- 192 clinicians in this Medicare group
Bakersfield, CA 93301
- Reassigned Medicare billing, California enrollment
- 214 clinicians in this Medicare group
Shenandoah, TX 77380
- Reassigned Medicare billing, Texas enrollment
- 1,278 clinicians in this Medicare group
San Antonio, TX 78230
- Reassigned Medicare billing, Texas enrollment
- 106 clinicians in this Medicare group
San Antonio, TX 78229
- Reassigned Medicare billing, Texas enrollment
- 106 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.
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 1235492901. It was assigned to this individual provider in the NPPES registry on June 19, 2012.
Where is Christopher Walker located?
Christopher Walker practices at 374 Mdg: Unit 5071, Apo, AP 96326. The listed phone number is (315) 225-7371.
What is Christopher Walker's specialty?
The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.
Is Christopher Walker enrolled in Medicare?
Yes. Christopher Walker is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Christopher Walker's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Christopher Walker reassigns Medicare benefits to 6 organizations: Adventist Health Medical Center Tehachapi (Tehachapi, CA), Eagle Partners, PLLC (Duncan, OK), San Joaquin Community Hospital (Bakersfield, CA), Singleton Associates PA (Shenandoah, TX), South Texas Radiology Group PA (San Antonio, TX) and 1 more organization, listed in the Medicare section above. 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 Christopher Walker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Christopher Walker accept?
Health plans from Blue Cross and Blue Shield of Texas list Christopher Walker as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Christopher Walker was last updated on July 18, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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 James Walker, M.D. · NPI 1235492901
Diagnostic Radiology physician in Apo, AP. Individual provider, active in the CMS NPPES registry since June 19, 2012.
## Identity
- **NPI:** 1235492901 (Entity type: Individual)
- **Enumerated:** June 19, 2012
- **Primary specialty:** Radiology - Diagnostic Radiology · taxonomy 2085R0202X
- **State license:** R4161 (Texas)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 374 MDG: UNIT 5071, Apo, AP 96326
- **Phone:** (315) 225-7371
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 6 organizations under Medicare reassignment (form CMS-855R): Adventist Health Medical Center Tehachapi (NPI 1275538530, Tehachapi, CA); Eagle Partners, PLLC (NPI 1548450976, Duncan, OK); San Joaquin Community Hospital (NPI 1538157508, Bakersfield, CA); Singleton Associates PA (NPI 1487811766, Shenandoah, TX); South Texas Radiology Group PA (NPI 1851368039, San Antonio, TX); and 1 more · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 18, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1235492901) · Data from the CMS NPPES public registry.