Dennis R. Hartung, MD
Obstetrics & Gynecology Physician · Baldwin, WI
Dennis R. Hartung, MD is an obstetrics & gynecology physician with a practice address in Baldwin, Wisconsin, and NPI 1124090543, issued on Feb 2, 2006. Check the license (Wisconsin 48108, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Dennis R. Hartung
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License numbers
- 48108 WI
48108-020 WI
4306 AL
47509 MN
Self-reported in NPPES; status is on the state search - Practice location
- 1100 Bergslien St, Baldwin, WI 54002
- Phone
- (715) 684-1111
- Enumerated
- Feb 2, 2006
- Record last updated
- Dec 30, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (715) 684-1289
- Medicaid ID
- 34685300 WI
- Medicare enrollment
- Enrolled (PECOS I20150130000844); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 796 in Wisconsin → Look up another NPI →
Also registered at 1100 Bergslien St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Sarah Aluning, M.D.Pediatrics Physician1417362195
- Sarah Anderson, N.P.Family Nurse Practitioner1003242306
- Julie Andrzejczak, CNMAdvanced Practice Midwife1265170310
- Faisal Anwar, M.D.Internal Medicine Physician1558655878
- Abbey Arndt, NPFamily Nurse Practitioner1003508136
- Christopher Babbitt, PSYDClinical Psychologist1245232982
Verify Dennis R. Hartung in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 48108Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
19 Medicare Part D claims for 11 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of 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
- Baldwin Area Medical Center IncBaldwin, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Dennis R. Hartung among 796 obstetrics & gynecology physician records in Wisconsin
Dennis R. Hartung, MD is one of 796 obstetrics & gynecology physician records with a practice address in Wisconsin. 71% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 47% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1990 · median 2007 among the 478 with a school on file
- Record last updated2021 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 obstetrics & gynecology physician records list a practice address in Baldwin
They are 3 of the 119 NPPES records with a practice address in Baldwin, and 796 obstetrics & gynecology physician records in Wisconsin.
All 796 in Wisconsin → Every provider in Baldwin → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Paul Boeder, MDBaldwin, WI 540021356335269
- Steven Verbeek, M.D.Baldwin, WI 540021821047309
- Edward Hagen, D.O.Amery, WI 540011689671331
- Morgan Barnum, D.O.Hudson, WI 540161174720759
- Brenton Jenkins, MDHudson, WI 540161205014107
- Jenna Lehman, DOHudson, WI 540161154909729
- Caroline Leonard, MDHudson, WI 540161790749158
- Alyssa Lynch, DOHudson, WI 540161023252723
Common questions
What is Dennis R. Hartung, MD's NPI number?
Dennis R. Hartung, MD's National Provider Identifier (NPI) is 1124090543, issued on Feb 2, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Dennis R. Hartung, MD located?
The NPPES record lists a practice address at 1100 Bergslien St, Baldwin, WI, 54002. Phone: (715) 684-1111. Providers update this record themselves, so call before visiting.
How can I verify Dennis R. Hartung, MD's license?
NPPES lists Wisconsin license number 48108, 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 Dennis R. Hartung, MD prescribe under Medicare Part D?
In 2024, Dennis R. Hartung, MD had 19 Medicare Part D claims for 11 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.