Darren M. Heesacker, MD
Emergency Medicine Physician · Oshkosh, WI
Darren M. Heesacker, MD is an emergency medicine physician with a practice address in Oshkosh, Wisconsin, and NPI 1013953561, issued on Jun 22, 2006. Check the license (Wisconsin 36486, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Darren M. Heesacker
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 36486 WI
Self-reported in NPPES; status is on the state search - Practice location
- 855 N Westhaven Dr, Oshkosh, WI 54904
- Phone
- (920) 288-4060
- Enumerated
- Jun 22, 2006
- Record last updated
- Apr 21, 2026
- Fax
- (920) 456-7421
- Medicaid IDs
- 104470702 MI
32114000 WI - Medicare enrollment
- Enrolled (PECOS I20041122000946); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 1992
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,464 in Wisconsin → Look up another NPI →
Also registered at 855 N Westhaven Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Darren M. Heesacker in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 36486Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average emergency medicine physician in 2024
476 Medicare Part D claims for 320 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 4% of claims. 94 claims were for opioids.
Most prescribed
- Oxycodone-Acetaminophen52 claims
- Ciprofloxacin Hcl30 claims
- Cephalexin29 claims
- Diclofenac Sodium27 claims
- Methylprednisolone27 claims
- Prednisone25 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 3 group practices
- Aurora Medical Group, Inc.Kaukauna, WI
- Baycare Aurora LLCKaukauna, WI
- Baycare Clinic LLPGreen Bay, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Darren M. Heesacker among 1,464 emergency medicine physician records in Wisconsin
Darren M. Heesacker, MD 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 58% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1992 · median 2011 among the 844 with a school on file
- Record last updated2026 · 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).
22 emergency medicine physician records list a practice address in Oshkosh
They are 22 of the 1,527 NPPES records with a practice address in Oshkosh, and 1,464 emergency medicine physician records in Wisconsin.
All 1,464 in Wisconsin → Every provider in Oshkosh → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Benjamin Genesis Bautista, MDOshkosh, WI 549041396051561
- Craig Brewster, DOOshkosh, WI 549041700378130
- Christopher Chancey, DOOshkosh, WI 549041588833370
- Daniel Gale, MDOshkosh, WI 549041346530979
- Ngassa Mssika, DOOshkosh, WI 549041932410461
- Thomas Plank, MDOshkosh, WI 549041811914245
- Kevin Polglaze, DOOshkosh, WI 549041053555367
- Jane Reid, MDOshkosh, WI 549041528042793
Common questions
What is Darren M. Heesacker, MD's NPI number?
Darren M. Heesacker, MD's National Provider Identifier (NPI) is 1013953561, issued on Jun 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Darren M. Heesacker, MD located?
The NPPES record lists a practice address at 855 N Westhaven Dr, Oshkosh, WI, 54904. Phone: (920) 288-4060. Providers update this record themselves, so call before visiting.
How can I verify Darren M. Heesacker, MD's license?
NPPES lists Wisconsin license number 36486, 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 Darren M. Heesacker, MD prescribe under Medicare Part D?
In 2024, Darren M. Heesacker, MD had 476 Medicare Part D claims for 320 beneficiaries; 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.