JOHN F. WALKER JR. M.D.
NPI 1114951696
Anesthesiology in San Diego, CA
About John F. Walker Jr. M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN F. WALKER JR. M.D. (NPI 1114951696) is an individual anesthesiology provider in San Diego, California, licensed in California (G70121) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS and is a graduate of University Of California, San Francisco School Of Medicine (1986).
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 4
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
John F. Walker Jr. 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 John Walker reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
San Diego, CA 92123
- Reassigned Medicare billing, California enrollment
- 269 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.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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.
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 John Walker's NPI number?
The NPI number for John Walker is 1114951696. It was assigned to this individual provider in the NPPES registry on July 10, 2006.
Where is John Walker located?
John Walker practices at 3626 Ruffin Rd, San Diego, CA 92123. The listed phone number is (858) 565-9666.
What is John Walker's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is John Walker enrolled in Medicare?
Yes. John 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 John Walker's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Walker reassigns Medicare benefits to Anesthesia Service Medical Group (San Diego, 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 John 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 John Walker was last updated on December 7, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# John F. Walker Jr., M.D. · NPI 1114951696
Anesthesiology physician in San Diego, California. Individual provider, active in the CMS NPPES registry since July 10, 2006.
## Identity
- **NPI:** 1114951696 (Entity type: Individual)
- **Enumerated:** July 10, 2006
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** G70121 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 3626 RUFFIN RD, San Diego, CA 92123-1810
- **Phone:** (858) 565-9666 · **Fax:** (858) 565-9441
## 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:** Anesthesia Service Medical Group (NPI 1053354233, San Diego, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of California, San Francisco School Of Medicine, class of 1986
## Record status
- **NPPES last updated:** December 7, 2007
- **Other identifiers:** Medicare PIN WG70121A (CA); Medicare UPIN D72366 (CA); Medicaid 00G701210 (CA); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1114951696) · Data from the CMS NPPES public registry.