Nicholas B. Haun, M.D.
Hospitalist Physician · Madison, WI
Nicholas B. Haun, M.D. is a hospitalist physician with a practice address in Madison, Wisconsin, and NPI 1215225446, issued on Jul 21, 2011. Check the license (Wisconsin 59926, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Nicholas B. Haun
- Credential
- M.D.
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 59926 WI
Self-reported in NPPES; status is on the state search - Practice location
- UW Hospital And Clinics, Madison, WI 53792
- Phone
- (608) 263-6400
- Enumerated
- Jul 21, 2011
- Record last updated
- Jan 21, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (608) 262-6743
- Medicare enrollment
- Enrolled (PECOS I20140902000006); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 2011
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 894 in Wisconsin → Look up another NPI →
Also registered at UW Hospital And Clinics
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Nicholas B. Haun in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 59926Check 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 hospitalist physician in 2024
78 Medicare Part D claims for 37 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
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
- University OF Wisconsin Medical Foundation IncMadison, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nicholas B. Haun among 894 hospitalist physician records in Wisconsin
Nicholas B. Haun, M.D. is one of 894 hospitalist physician records with a practice address in Wisconsin. 91% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 38% of them.
- NPI issued2011 · 38% of these records are older, 58% newer
- In a Medicare fileYes · 91% of these records are
- In the CMS Doctors and Clinicians fileYes · 86% of these records are
- Graduated2011 · median 2011 among the 768 with a school on file
- Record last updated2021 · 29% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in Wisconsin
There are 894 hospitalist physician records in Wisconsin.
All 894 in Wisconsin → Every provider in Madison → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Sarah Ahrens, MDMadison, WI 537921497796924
- Romeo Barakeh, MDMadison, WI 537921205863503
- Ellen Barbouche, MDMadison, WI 537921467429167
- Bartho Caponi, M.D.Madison, WI 537921326006743
- Ann Curtis, MDMadison, WI 537921669585295
- David Gaus, MDMadison, WI 537921639284631
- Edward Lalik, D.O.Madison, WI 537921790770857
- Scott Mead, MDMadison, WI 537921528034568
Common questions
What is Nicholas B. Haun, M.D.'s NPI number?
Nicholas B. Haun, M.D.'s National Provider Identifier (NPI) is 1215225446, issued on Jul 21, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Nicholas B. Haun, M.D. located?
The NPPES record lists a practice address at UW Hospital And Clinics, Madison, WI, 53792. Phone: (608) 263-6400. Providers update this record themselves, so call before visiting.
How can I verify Nicholas B. Haun, M.D.'s license?
NPPES lists Wisconsin license number 59926, 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 Nicholas B. Haun, M.D. prescribe under Medicare Part D?
In 2024, Nicholas B. Haun, M.D. had 78 Medicare Part D claims for 37 beneficiaries; the average among hospitalist physician prescribers was 521. 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.