Walker A. Wynkoop, M.D.
Orthopaedic Surgery Physician · Los Banos, CA
Walker A. Wynkoop, M.D. is an orthopaedic surgery physician with a practice address in Los Banos, California, and NPI 1760580427, issued on Sep 20, 2006. Check the license (California 87898, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Walker A. Wynkoop
- Credential
- M.D.
- Primary taxonomy
- Orthopaedic Surgery Physician 207X00000X
- License number
- 87898 CA
Self-reported in NPPES; status is on the state search - Practice location
- 807 Illinois Ave, Los Banos, CA 93635
- Phone
- (209) 710-8695
- Enumerated
- Sep 20, 2006
- Record last updated
- Feb 19, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20200413002871); accepts Medicare assignment
- Medical or professional school
- Loyola University Of Chicago, Stritch School Of Medicine, 1985
- Entity
- Type 1 · individual
8 nearest orthopaedic surgery physician records → All 2,276 in California → Look up another NPI →
Also registered at 807 Illinois Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John Arriola, MDSurgery Physician1518527944
- Abhijit Shaligram, MDSurgery Physician1063594653
Verify Walker A. Wynkoop in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 87898Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average orthopaedic surgery physician in 2024
53 Medicare Part D claims for 30 beneficiaries, against an average of 346 among the 16,516 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 14 claims were for opioids.
Most prescribed
- Ibuprofen25 claims
- Hydrocodone-Acetaminophen13 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 2 group practices
- Acute Care Surgery Medical Group IncLos Banos, CA
- Surgical Affiliates OF CaliforniaLos Banos, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Walker A. Wynkoop among 2,276 orthopaedic surgery physician records in California
Walker A. Wynkoop, M.D. is one of 2,276 orthopaedic surgery physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 46% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1985 · median 2003 among the 1,347 with a school on file
- Record last updated2021 · 66% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207X00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Orthopaedic Surgery Physician providers in California
There are 2,276 orthopaedic surgery physician records in California.
All 2,276 in California → Every provider in Los Banos → Orthopaedic Surgery Physician nationwide →
The 8 orthopaedic surgery physician records with the nearest ZIP codes
- Shane Forsting, D.O.Madera, CA 936361649719055
- Cyril Rebel, MDMadera, CA 936371952479180
- Keiko Amano, MDClovis, CA 936111801139993
- Mark Ayoub, MDClovis, CA 936111689961310
- Deniz Baysal, MD, FRCPClovis, CA 936111992772610
- Michael Charles, MDClovis, CA 936111689096786
- Robert Kollmorgen, D.O.Clovis, CA 936111760621759
- Armen Martirosian, MDClovis, CA 936111114087046
Common questions
What is Walker A. Wynkoop, M.D.'s NPI number?
Walker A. Wynkoop, M.D.'s National Provider Identifier (NPI) is 1760580427, issued on Sep 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Walker A. Wynkoop, M.D. located?
The NPPES record lists a practice address at 807 Illinois Ave, Los Banos, CA, 93635. Phone: (209) 710-8695. Providers update this record themselves, so call before visiting.
How can I verify Walker A. Wynkoop, M.D.'s license?
NPPES lists California license number 87898, as entered by the provider. 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 Walker A. Wynkoop, M.D. prescribe under Medicare Part D?
In 2024, Walker A. Wynkoop, M.D. had 53 Medicare Part D claims for 30 beneficiaries; the average among orthopaedic surgery physician prescribers was 346. 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.