Erik Paul Gierahn, M.D.
Emergency Medicine Physician · West Bend, WI
Erik Paul Gierahn, M.D. is an emergency medicine physician with a practice address in West Bend, Wisconsin, and NPI 1255368189, issued on Jun 27, 2006. Check the license (Wisconsin 50958, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Erik Paul Gierahn
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 50958 WI
A89241 CA
Self-reported in NPPES; status is on the state search - Practice location
- 3200 Pleasant Valley RD, West Bend, WI 53095
- Phone
- (262) 836-7300
- Enumerated
- Jun 27, 2006
- Record last updated
- Sep 2, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (262) 836-7301
- Medicaid IDs
- 1255368189 WI
00A892410 CA - Medicare enrollment
- Enrolled (PECOS I20080110000604); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 2003
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,464 in Wisconsin → Look up another NPI →
Also registered at 3200 Pleasant Valley RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Brendan BlackwelderCertified Registered Nurse Anesthetist1902279474
- Stacy Boden, NPPediatric Nurse Practitioner1124250063
Verify Erik Paul Gierahn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 50958Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
1% more Medicare Part D claims than the average emergency medicine physician in 2024
229 Medicare Part D claims for 172 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 31 claims were for opioids.
Most prescribed
- Prednisone25 claims
- Hydrocodone-Acetaminophen23 claims
- Cephalexin20 claims
- Doxycycline Hyclate19 claims
- Cefdinir18 claims
- Ondansetron Odt17 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 2 group practices
- Froedtert Andthe Medical College OF Wisconsin Community Physicians IncWest Bend, WI
- The Medical College OF Wisconsin IncWest Bend, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Erik Paul Gierahn among 1,464 emergency medicine physician records in Wisconsin
Erik Paul Gierahn, 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 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
- Graduated2003 · median 2011 among the 844 with a school on file
- Record last updated2020 · 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).
Emergency Medicine Physician providers in Wisconsin
There are 1,464 emergency medicine physician records in Wisconsin.
All 1,464 in Wisconsin → Every provider in West Bend → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Therese Gesteland, M.D.West Bend, WI 530951649227950
- Mary Lewis, M.D.West Bend, WI 530951982634523
- Joseph Schwartz, M.D.West Bend, WI 530951801825492
- Robert Beyer, M.D.Mequon, WI 530971508027947
- Meghan Fabrizi, M.D.Mequon, WI 530971467898064
- Jeffrey Merlin, M.D.Mequon, WI 530971174812085
- Ross Skizycki, M.D.Mequon, WI 530971972881803
- Edward Barthell, M.D.Mequon, WI 530921205898822
Common questions
What is Erik Paul Gierahn, M.D.'s NPI number?
Erik Paul Gierahn, M.D.'s National Provider Identifier (NPI) is 1255368189, issued on Jun 27, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Erik Paul Gierahn, M.D. located?
The NPPES record lists a practice address at 3200 Pleasant Valley RD, West Bend, WI, 53095. Phone: (262) 836-7300. Providers update this record themselves, so call before visiting.
How can I verify Erik Paul Gierahn, M.D.'s license?
NPPES lists Wisconsin license number 50958, 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 Erik Paul Gierahn, M.D. prescribe under Medicare Part D?
In 2024, Erik Paul Gierahn, M.D. had 229 Medicare Part D claims for 172 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.