Will Davis Lyon
Geriatric Medicine (Internal Medicine) Physician · Milwaukee, WI
Will Davis Lyon is a geriatric medicine (internal medicine) physician with a practice address in Milwaukee, Wisconsin, and NPI 1245791607, issued on Mar 28, 2019. Check the license (Wisconsin 75614, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Will Davis Lyon
- Primary taxonomy
- Geriatric Medicine (Internal Medicine) Physician 207RG0300X
- License number
- 75614 WI
Self-reported in NPPES; status is on the state search - Practice location
- 9200 W Wisconsin Ave, Milwaukee, WI 53226
- Phone
- (414) 805-6850
- Enumerated
- Mar 28, 2019
- Record last updated
- Sep 11, 2023
- Fax
- (414) 805-6864
- Medicaid ID
- 1245791607 WI
- Medicare enrollment
- Enrolled (PECOS I20230804002685); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 2019
- Entity
- Type 1 · individual
8 nearest geriatric medicine (internal medicine) physician records → All 110 in Wisconsin → Look up another NPI →
Also registered at 9200 W Wisconsin Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Will Davis Lyon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 75614Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
37% fewer Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024
2,682 Medicare Part D claims for 228 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Eliquis171 claims
- Atorvastatin Calcium99 claims
- Metoprolol Succinate94 claims
- Pantoprazole Sodium92 claims
- Memantine Hcl87 claims
- Sertraline Hcl87 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
- Froedtert Andthe Medical College OF Wisconsin Community Physicians IncMenomonee Falls, WI
- The Medical College OF Wisconsin IncMilwaukee, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Will Davis Lyon among 110 geriatric medicine (internal medicine) physician records in Wisconsin
Will Davis Lyon is one of 110 geriatric medicine (internal medicine) physician records with a practice address in Wisconsin. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 85% of them.
- NPI issued2019 · 85% of these records are older, 13% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2019 · median 2006 among the 55 with a school on file
- Record last updated2023 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Internal Medicine) Physician providers in Wisconsin
There are 110 geriatric medicine (internal medicine) physician records in Wisconsin.
All 110 in Wisconsin → Every provider in Milwaukee → Geriatric Medicine (Internal Medicine) Physician nationwide →
The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes
- Eric Baeuerle, MD, PHDMilwaukee, WI 532261922748409
- Angela Beckert, M.D.Milwaukee, WI 532261831485333
- Elizabeth BukowyMilwaukee, WI 532261063839397
- Steven Denson, MDMilwaukee, WI 532261912951203
- Edmund Duthie, MDMilwaukee, WI 532261174574123
- Evan HenricksMilwaukee, WI 532261578094835
- Jordan Merkow, MDMilwaukee, WI 532261023505922
- Cara O'Brien, M.D.Milwaukee, WI 532261720407893
Common questions
What is Will Davis Lyon's NPI number?
Will Davis Lyon's National Provider Identifier (NPI) is 1245791607, issued on Mar 28, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Will Davis Lyon located?
The NPPES record lists a practice address at 9200 W Wisconsin Ave, Milwaukee, WI, 53226. Phone: (414) 805-6850. Providers update this record themselves, so call before visiting.
How can I verify Will Davis Lyon's license?
NPPES lists Wisconsin license number 75614, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Will Davis Lyon prescribe under Medicare Part D?
In 2024, Will Davis Lyon had 2,682 Medicare Part D claims for 228 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. 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.