Thomas Diehl, MD
Surgery Physician · Madison, WI
Thomas Diehl, MD is a surgery physician with a practice address in Madison, Wisconsin, and NPI 1134617608, issued on Apr 30, 2018. Check the license (Wisconsin 73097-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Thomas Diehl
- Credential
- MD
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- 73097-20 WI
Self-reported in NPPES; status is on the state search - Practice location
- UW Hospitals And Clinics 600 Highland Ave, Madison, WI 53792
- Phone
- (608) 263-6400
- Enumerated
- Apr 30, 2018
- Record last updated
- Jun 26, 2024
- Medicare enrollment
- Enrolled (PECOS I20240712001748); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 726 in Wisconsin → Look up another NPI →
Also registered at UW Hospitals And Clinics 600 Highland Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sherika Adams, MDNeurology Physician1346945722
- Sayee Sundar Alagusundaramoorthy, M.B.B.S.,Nephrology Physician1932514619
- Kelsi Alexander, D.O.Student in an Organized Health Care Education/Training Program1407475536
- Michael BergquistDiagnostic Radiology Physician1033644927
- Megan Berry, DONeurology with Special Qualifications in Child Neurology Physician1194228569
- Scott Blaine, DOAnesthesiology Physician1063975126
Verify Thomas Diehl in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 73097-20Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average surgery physician in 2024
15 Medicare Part D claims for 14 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 14 claims were for opioids.
Most prescribed
- Oxycodone Hcl14 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: $61.29
1 payment: travel and lodging; the largest payer was Baxter Healthcare. The 17,103 providers of this specialty with any payment received $3,513.80 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
- Fort Healthcare IncFort Atkinson, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas Diehl among 726 surgery physician records in Wisconsin
Thomas Diehl, MD is one of 726 surgery physician records with a practice address in Wisconsin. 72% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 86% of them.
- NPI issued2018 · 86% of these records are older, 12% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2018 · median 2006 among the 446 with a school on file
- Record last updated2024 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Surgery Physician providers in Wisconsin
There are 726 surgery physician records in Wisconsin.
All 726 in Wisconsin → Every provider in Madison → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Evie Carchman, M.D.Madison, WI 537921114123502
- Luke Funk, MDMadison, WI 537921558440677
- Bruce Harms, MDMadison, WI 537921003871617
- Charles Heise, MDMadison, WI 537921346205036
- Anne Lidor, M.D.Madison, WI 537921912948613
- Heather Neuman, M.D.Madison, WI 537921780843680
- James Orr, MDMadison, WI 537921588867683
- Layton Rikkers, MDMadison, WI 537921629032297
Common questions
What is Thomas Diehl, MD's NPI number?
Thomas Diehl, MD's National Provider Identifier (NPI) is 1134617608, issued on Apr 30, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Diehl, MD located?
The NPPES record lists a practice address at UW Hospitals And Clinics 600 Highland Ave, Madison, WI, 53792. Phone: (608) 263-6400. Providers update this record themselves, so call before visiting.
How can I verify Thomas Diehl, MD's license?
NPPES lists Wisconsin license number 73097-20, 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 Diehl, MD prescribe under Medicare Part D?
In 2024, Thomas Diehl, MD had 15 Medicare Part D claims for 14 beneficiaries; the average among surgery physician prescribers was 147. 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.