Christopher William Walker, M.D.
Family Medicine Physician · Travis Air Force Base, CA
Christopher William Walker, M.D. is a family medicine physician with a practice address in Travis Air Force Base, California, and NPI 1851372130, issued on Nov 14, 2005. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Christopher William Walker
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 01054419A IN
Self-reported in NPPES; status is on the state search - Practice location
- David Grant Medical Center, Travis Air Force Base, CA 94535
- Phone
- (707) 423-3735
- Enumerated
- Nov 14, 2005
- Record last updated
- Dec 23, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20080610000249); accepts Medicare assignment
- Medical or professional school
- Uniformed Services Uhs Fe Hebert School Of Med, 1998
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Verify Christopher William Walker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average family medicine physician in 2024
28 Medicare Part D claims for 25 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 46% of claims.
Most prescribed
- Adacel Tdap12 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Permanente Medical Group IncVacaville, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Christopher William Walker among 17,133 family medicine physician records in California
Christopher William Walker, M.D. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1998 · median 2005 among the 10,652 with a school on file
- Record last updated2021 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
2 family medicine physician records list a practice address in Travis Air Force Base
They are 2 of the 10 NPPES records with a practice address in Travis Air Force Base, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Travis Air Force Base → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Joann Basaran, MDTravis Afb, CA 945351184610305
- Ronald Crandall, M.D.Travis Afb, CA 945351861473456
- Byron Hepburn, MDTravis Afb, CA 945351730178021
- Kathryn Holder, M.D.Fairfield, CA 945351962499392
- Ilda Isaza, D.O.Travis Afb, CA 945351871512913
- Gregory Kennebeck, MDTravis Afb, CA 945351871579847
- Nonato Largoza, MDTravis Afb, CA 945351609817303
- Daniel Murray, M.D., M.P.H.Travis Afb, CA 945351285613018
Common questions
What is Christopher William Walker, M.D.'s NPI number?
Christopher William Walker, M.D.'s National Provider Identifier (NPI) is 1851372130, issued on Nov 14, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Christopher William Walker, M.D. located?
The NPPES record lists a practice address at David Grant Medical Center, Travis Air Force Base, CA, 94535. Phone: (707) 423-3735. Providers update this record themselves, so call before visiting.
How can I verify Christopher William Walker, M.D.'s license?
Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Christopher William Walker, M.D. prescribe under Medicare Part D?
In 2024, Christopher William Walker, M.D. had 28 Medicare Part D claims for 25 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.