N Thomas Casper, MD
Internal Medicine Physician · Madison, WI
N Thomas Casper, MD is an internal medicine physician with a practice address in Madison, Wisconsin, and NPI 1003883786, issued on Mar 2, 2006. Check the license (Wisconsin 33370, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- N Thomas Casper
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 33370 WI
Self-reported in NPPES; status is on the state search - Practice location
- 3102 Meriter Way, Madison, WI 53719
- Phone
- (608) 417-8800
- Enumerated
- Mar 2, 2006
- Record last updated
- Feb 7, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicaid ID
- 32051500 WI
- Medicare enrollment
- Enrolled (PECOS I20080819000518); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 1991
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 3102 Meriter Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cara Baumberger, RNFamily Nurse Practitioner1073289344
- Kimberly Curran, APNPNurse Practitioner1154877165
- Robert Golden, MDFamily Medicine Physician1013986199
- Dana Johnson, MDPediatrics Physician1518903897
- Wendy Mortimore, MDInternal Medicine Physician1841242674
- Arpad Olajos, MDInternal Medicine Physician1568579936
Verify N Thomas Casper in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 33370Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average internal medicine physician in 2024
8,720 Medicare Part D claims for 609 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 148 claims were for opioids.
Most prescribed
- Atorvastatin Calcium792 claims
- Losartan Potassium434 claims
- Amlodipine Besylate425 claims
- Omeprazole362 claims
- Lisinopril326 claims
- Levothyroxine Sodium297 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 one group practice
- Meriter Hospital IncMadison, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
417 internal medicine physician records list a practice address in Madison
They are 417 of the 15,014 NPPES records with a practice address in Madison, and 2,078 internal medicine physician records in Wisconsin.
All 417 in Madison → All 2,078 in Wisconsin → Every provider in Madison →
Other internal medicine physician records in Wisconsin
- Sheetal Aatrai, MDMarshfield, WI1417568965
- Khalid Abdelgadir, MDManitowoc, WI1407433295
- Mesfin Abdissa, MDMilwaukee, WI1376579417
- Anas Abed, MDMadison, WI1659002566
- Margaret Abel, MDRhinelander, WI1477590487
- Mesfin Abera, M.D.Beaver Dam, WI1972852390
- Vidthya Abraham, M.D.Madison, WI1861836058
- Ismael Abu Limon, MDGreenfield, WI1467945543
- Amjed Abu Muhanna, MDMarinette, WI1861514135
- Satish Achanti, MDAppleton, WI1982711198
Common questions
What is N Thomas Casper, MD's NPI number?
N Thomas Casper, MD's National Provider Identifier (NPI) is 1003883786, issued on Mar 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is N Thomas Casper, MD located?
The NPPES record lists a practice address at 3102 Meriter Way, Madison, WI, 53719. Phone: (608) 417-8800. Providers update this record themselves, so call before visiting.
How can I verify N Thomas Casper, MD's license?
NPPES lists Wisconsin license number 33370, 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 N Thomas Casper, MD prescribe under Medicare Part D?
In 2024, N Thomas Casper, MD had 8,720 Medicare Part D claims for 609 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.