John C. Walker, M.D.
Allergy & Immunology Physician · Richland, WA
John C. Walker, M.D. is an allergy & immunology physician with a practice address in Richland, Washington, and NPI 1215964671, issued on Jun 28, 2006. Check the license (Washington MD00040997, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- John C. Walker
- Credential
- M.D.
- Primary taxonomy
- Allergy & Immunology Physician 207K00000X
- License number
- MD00040997 WA
Self-reported in NPPES; status is on the state search - Practice location
- 108 Columbia Point Dr, Richland, WA 99352
- Phone
- (509) 946-0189
- Enumerated
- Jun 28, 2006
- Record last updated
- Sep 3, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (509) 946-0264
- Medicaid ID
- 8322059 WA
- Entity
- Type 1 · individual
8 nearest allergy & immunology physician records → All 90 in Washington → Look up another NPI →
Also registered at 108 Columbia Point Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Lucas Meredith, RNNurse Practitioner1841902053
Verify John C. Walker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00040997Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average allergy & immunology physician in 2024
67 Medicare Part D claims for 43 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D.
Most prescribed
- Montelukast Sodium16 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.
John C. Walker among 90 allergy & immunology physician records in Washington
John C. Walker, M.D. is one of 90 allergy & immunology physician records with a practice address in Washington. 70% 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 14% of them.
- NPI issued2006 · 14% of these records are older, 40% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileNo · 51% of these records are
- Record last updated2019 · 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 207K00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology Physician providers in Washington
There are 90 allergy & immunology physician records in Washington.
All 90 in Washington → Every provider in Richland → Allergy & Immunology Physician nationwide →
The 8 allergy & immunology physician records with the nearest ZIP codes
- Terance Kordash, MDSpokane, WA 992231063581775
- David McGarry, DOSpokane Valley, WA 992161093135188
- Ritu Pabby, MDSpokane Valley, WA 992161184699977
- Richard Gower, MDSpokane, WA 992041619969557
- Michael Kraemer, M.D.Spokane, WA 992041578552790
- Michael McCarthy, MDSpokane, WA 992041619061389
- Kerry Drain, M.D.Spokane, WA 992011710978630
- Steven Kernerman, D.O.Spokane, WA 992011477544435
Common questions
What is John C. Walker, M.D.'s NPI number?
John C. Walker, M.D.'s National Provider Identifier (NPI) is 1215964671, issued on Jun 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John C. Walker, M.D. located?
The NPPES record lists a practice address at 108 Columbia Point Dr, Richland, WA, 99352. Phone: (509) 946-0189. Providers update this record themselves, so call before visiting.
How can I verify John C. Walker, M.D.'s license?
NPPES lists Washington license number MD00040997, as entered by the provider. Search the Washington Medical Commission at https://wahelms.my.site.com/s/license-search. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John C. Walker, M.D. prescribe under Medicare Part D?
In 2024, John C. Walker, M.D. had 67 Medicare Part D claims for 43 beneficiaries; the average among allergy & immunology physician prescribers was 741. 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.