Aaron B. Hoffnung, M.D.
Emergency Medicine Physician · Waupun, WI
Aaron B. Hoffnung, M.D. is an emergency medicine physician with a practice address in Waupun, Wisconsin, and NPI 1265425748, issued on Aug 30, 2005. Check the license (Wisconsin 49325, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Aaron B. Hoffnung
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 49325 WI
036-109491 IL
Self-reported in NPPES; status is on the state search - Practice location
- 620 W Brown St, Waupun, WI 53963
- Phone
- (920) 324-5581
- Enumerated
- Aug 30, 2005
- Record last updated
- Apr 12, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicaid IDs
- 34730400 WI
036-109491 IL - Medicare enrollment
- Enrolled (PECOS I20061110000088); accepts Medicare assignment
- Medical or professional school
- University Of Rochester School Of Medicine And Dentistry, 2000
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,464 in Wisconsin → Look up another NPI →
Also registered at 620 W Brown St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Linda Burmania, PTAPhysical Therapy Assistant1437104841
- Jeffrey Campbell, LCSWClinical Social Worker1275565319
- Teresa Chouinard, APNPFamily Nurse Practitioner1659722809
- Melissa Czerwinski, FNP-BCNurse Practitioner1518625409
- Shamiah Dekker, CRNACertified Registered Nurse Anesthetist1881139426
Verify Aaron B. Hoffnung in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 49325Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average emergency medicine physician in 2024
19 Medicare Part D claims, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
Most prescribed
- Buprenorphine-Naloxone18 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
- Empower Recovery LLCMadison, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Aaron B. Hoffnung among 1,464 emergency medicine physician records in Wisconsin
Aaron B. Hoffnung, M.D. is one of 1,464 emergency medicine physician records with a practice address in Wisconsin. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 92% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2000 · median 2011 among the 844 with a school on file
- Record last updated2016 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 emergency medicine physician records list a practice address in Waupun
They are 3 of the 131 NPPES records with a practice address in Waupun, and 1,464 emergency medicine physician records in Wisconsin.
All 1,464 in Wisconsin → Every provider in Waupun → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Gregory Schulz, MDWaupun, WI 539631801852785
- Kathryn Sullivan Dillie, MD, PHDWaupun, WI 539631548426141
- Roxanne Richards, M.D.Wisconsin Dells, WI 539651760788640
- Rey Farne, MDMauston, WI 539481083695753
- James Reed, MDMauston, WI 539481689640740
- Barrett Shoults, MDMauston, WI 539481144563610
- Tamara Daniels, M.D.Friendship, WI 539341164488169
- Joseph Lachica, M.D.Friendship, WI 539341720027238
Common questions
What is Aaron B. Hoffnung, M.D.'s NPI number?
Aaron B. Hoffnung, M.D.'s National Provider Identifier (NPI) is 1265425748, issued on Aug 30, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Aaron B. Hoffnung, M.D. located?
The NPPES record lists a practice address at 620 W Brown St, Waupun, WI, 53963. Phone: (920) 324-5581. Providers update this record themselves, so call before visiting.
How can I verify Aaron B. Hoffnung, M.D.'s license?
NPPES lists Wisconsin license number 49325, 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 Aaron B. Hoffnung, M.D. prescribe under Medicare Part D?
In 2024, Aaron B. Hoffnung, M.D. had 19 Medicare Part D claims; the average among emergency medicine physician prescribers was 226. 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.