Thomas A. Johnson, MD
Internal Medicine Physician · Brookfield, WI
Thomas A. Johnson, MD is an internal medicine physician with a practice address in Brookfield, Wisconsin, and NPI 1891762852, issued on Mar 8, 2006. Check the license (Wisconsin 26997, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Thomas A. Johnson
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 26997 WI
Self-reported in NPPES; status is on the state search - Practice location
- 17000 W North Ave, Brookfield, WI 53005
- Phone
- (262) 782-4270
- Enumerated
- Mar 8, 2006
- Record last updated
- Aug 22, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (262) 784-9319
- Medicaid ID
- 30812100 WI
- Medicare enrollment
- Enrolled (PECOS I20040326001164); accepts Medicare assignment
- Medical or professional school
- University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 1976
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,078 in Wisconsin → Look up another NPI →
Also registered at 17000 W North Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Thomas A. Johnson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 26997Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.1 times the Medicare Part D claims of the average internal medicine physician in 2024
13,139 Medicare Part D claims for 1,131 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 327 claims were for opioids.
Most prescribed
- Atorvastatin Calcium1,284 claims
- Irbesartan867 claims
- Amlodipine Besylate697 claims
- Levothyroxine Sodium487 claims
- Rosuvastatin Calcium307 claims
- Omeprazole299 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 82.4 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $25.44
1 payment: food and beverage; the largest payer was Exact Sciences Corporation. 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
- Ascension Medical Group-Southeast Wisconsin IncBrookfield, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas A. Johnson among 2,078 internal medicine physician records in Wisconsin
Thomas A. Johnson, MD is one of 2,078 internal medicine physician records with a practice address in Wisconsin. 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 9% of them.
- NPI issued2006 · 9% of these records are older, 46% newer
- In a Medicare fileYes · 70% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated1976 · median 2002 among the 1,098 with a school on file
- Record last updated2011 · 55% 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 Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
39 internal medicine physician records list a practice address in Brookfield
They are 39 of the 2,036 NPPES records with a practice address in Brookfield, and 2,078 internal medicine physician records in Wisconsin.
All 2,078 in Wisconsin → Every provider in Brookfield → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Michelle Agnew, M.D.Brookfield, WI 530051720051550
- Minoudokht Azimi-Zavarei, MDBrookfield, WI 530051649280827
- Stephen Bielke, MDBrookfield, WI 530051528035516
- Russell Blankenburg, MDBrookfield, WI 530051104893577
- Eugene Burke, M.D.Brookfield, WI 530051457323065
- Sunu Eapen, MDBrookfield, WI 530051609819382
- Lawrence Golopol, MDBrookfield, WI 530051568493963
- Mushir Hassan, MDBrookfield, WI 530051043287436
Common questions
What is Thomas A. Johnson, MD's NPI number?
Thomas A. Johnson, MD's National Provider Identifier (NPI) is 1891762852, issued on Mar 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas A. Johnson, MD located?
The NPPES record lists a practice address at 17000 W North Ave, Brookfield, WI, 53005. Phone: (262) 782-4270. Providers update this record themselves, so call before visiting.
How can I verify Thomas A. Johnson, MD's license?
NPPES lists Wisconsin license number 26997, 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 Thomas A. Johnson, MD prescribe under Medicare Part D?
In 2024, Thomas A. Johnson, MD had 13,139 Medicare Part D claims for 1,131 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Thomas A. Johnson, MD's MIPS final score?
The 2023 MIPS final score is 82.4 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.