Michael J. Wilcox, M.D.
Internal Medicine Physician · Walla Walla, WA
Michael J. Wilcox, M.D. is an internal medicine physician with a practice address in Walla Walla, Washington, and NPI 1881668655, issued on Feb 16, 2006. Check the license (Washington MD00034335, as entered in NPPES) on the Washington Medical Commission; the Medicare figures below come from public CMS files.
- Name
- Michael J. Wilcox
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD00034335 WA
Self-reported in NPPES; status is on the state search - Practice location
- 55 W Tietan St, Walla Walla, WA 99362
- Phone
- (509) 525-3720
- Enumerated
- Feb 16, 2006
- Record last updated
- Nov 27, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (509) 522-1588
- Medicaid IDs
- 072954 OR
8195224 WA - Medicare enrollment
- Enrolled (PECOS I20100512000914); accepts Medicare assignment
- Medical or professional school
- Oregon Health Sciences University School Of Medicine, 1992
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,079 in Washington → Look up another NPI →
Also registered at 55 W Tietan St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kevin Andrews, MDInternal Medicine Physician1174513873
- Shirley Ashley, MDPediatrics Physician1922083195
- Eric Ball, M.D.Internal Medicine Physician1275507485
- Thomas Ballard, MDDiagnostic Radiology Physician1750360012
- Theodore Bergstrom, M.D.Pediatrics Physician1598739716
- Barbara Blankenship, M.D.Diagnostic Radiology Physician1356305262
Verify Michael J. Wilcox in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWashington Medical Commission
Search for license MD00034335Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.6 times the Medicare Part D claims of the average internal medicine physician in 2024
11,578 Medicare Part D claims for 690 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 460 claims were for opioids.
Most prescribed
- Atorvastatin Calcium559 claims
- Levothyroxine Sodium473 claims
- Losartan Potassium396 claims
- Amlodipine Besylate316 claims
- Lisinopril303 claims
- Tamsulosin Hcl276 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.
Industry payments in 2024: $1,066.70
46 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Privia Medical Group Washington PLLCWalla Walla, WA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael J. Wilcox among 3,079 internal medicine physician records in Washington
Michael J. Wilcox, M.D. is one of 3,079 internal medicine physician records with a practice address in Washington. 75% 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 8% of them.
- NPI issued2006 · 8% of these records are older, 55% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1992 · median 2006 among the 1,852 with a school on file
- Record last updated2007 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Washington practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
37 internal medicine physician records list a practice address in Walla Walla
They are 37 of the 1,276 NPPES records with a practice address in Walla Walla, and 3,079 internal medicine physician records in Washington.
All 3,079 in Washington → Every provider in Walla Walla → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Kevin Andrews, MDWalla Walla, WA 993621174513873
- Eric Ball, M.D.Walla Walla, WA 993621275507485
- Karen Geheb, M.D.Walla Walla, WA 993621972532745
- Dan Grinstead, M.D.Walla Walla, WA 993621881668010
- Philip Hooper, MDWalla Walla, WA 993621154307742
- Eric Jauhiainen, M.D.Walla Walla, WA 993621235103466
- Stevie Mazyck, MDWalla Walla, WA 993621902835697
- Patricia McIlvaine, M.D.Walla Walla, WA 993621689648594
Common questions
What is Michael J. Wilcox, M.D.'s NPI number?
Michael J. Wilcox, M.D.'s National Provider Identifier (NPI) is 1881668655, issued on Feb 16, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael J. Wilcox, M.D. located?
The NPPES record lists a practice address at 55 W Tietan St, Walla Walla, WA, 99362. Phone: (509) 525-3720. Providers update this record themselves, so call before visiting.
How can I verify Michael J. Wilcox, M.D.'s license?
NPPES lists Washington license number MD00034335, 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 Michael J. Wilcox, M.D. prescribe under Medicare Part D?
In 2024, Michael J. Wilcox, M.D. had 11,578 Medicare Part D claims for 690 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.