John E. Thomas, MD
Family Medicine Physician · Brookfield, WI
John E. Thomas, MD is a family medicine physician with a practice address in Brookfield, Wisconsin, and NPI 1124079876, issued on May 15, 2006. Check the license (Wisconsin 45960, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- John E. Thomas
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 45960 WI
Self-reported in NPPES; status is on the state search - Practice location
- 1350 S Sunny Slope RD, Brookfield, WI 53005
- Phone
- (414) 805-9600
- Enumerated
- May 15, 2006
- Record last updated
- Jun 6, 2014 (not updated in 12 years: call before relying on the address or phone)
- Fax
- (414) 805-9659
- Medicaid ID
- 1124079876 WI
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,765 in Wisconsin → Look up another NPI →
Also registered at 1350 S Sunny Slope RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John E. Thomas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 45960Check 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 family medicine physician in 2024
521 Medicare Part D claims for 47 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 25% of claims. 34 claims were for opioids.
Most prescribed
- Levothyroxine Sodium41 claims
- Losartan Potassium35 claims
- Mounjaro27 claims
- Albuterol Sulfate Hfa20 claims
- Gabapentin19 claims
- Oxycodone Hcl19 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: $82.60
4 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 55,478 providers of this specialty with any payment received $902.55 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.
John E. Thomas among 3,765 family medicine physician records in Wisconsin
John E. Thomas, MD is one of 3,765 family medicine physician records with a practice address in Wisconsin. 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 10% of them.
- NPI issued2006 · 10% of these records are older, 46% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2014 · 56% 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 Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
33 family medicine physician records list a practice address in Brookfield
They are 33 of the 2,036 NPPES records with a practice address in Brookfield, and 3,765 family medicine physician records in Wisconsin.
All 3,765 in Wisconsin → Every provider in Brookfield → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Jacquelyn Dinusson, MDBrookfield, WI 530051649221722
- Mark Dorow, M.D.Brookfield, WI 530051457323099
- Joanne Hill, MDBrookfield, WI 530051639121429
- Niel Johnson, MDBrookfield, WI 530051649233255
- Lowell Keppel, M.D.Brookfield, WI 530051730177353
- Jose Leiva, MDBrookfield, WI 530051962496760
- Joseph Maier, MDBrookfield, WI 530051770550139
- Sharniecia Norman, MDBrookfield, WI 530051538112289
Common questions
What is John E. Thomas, MD's NPI number?
John E. Thomas, MD's National Provider Identifier (NPI) is 1124079876, issued on May 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John E. Thomas, MD located?
The NPPES record lists a practice address at 1350 S Sunny Slope RD, Brookfield, WI, 53005. Phone: (414) 805-9600. Providers update this record themselves, so call before visiting.
How can I verify John E. Thomas, MD's license?
NPPES lists Wisconsin license number 45960, 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 John E. Thomas, MD prescribe under Medicare Part D?
In 2024, John E. Thomas, MD had 521 Medicare Part D claims for 47 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.