Erin K. Eferem, M.D.
Emergency Medicine Physician · Berlin, WI
Erin K. Eferem, M.D. is an emergency medicine physician with a practice address in Berlin, Wisconsin, and NPI 1700106796, issued on Jun 2, 2010. Check the license (Wisconsin 60303-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Erin K. Eferem
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 60303-20 WI
4301096495 MI
Self-reported in NPPES; status is on the state search - Practice location
- 225 Memorial Dr, Berlin, WI 54923
- Phone
- (920) 361-5525
- Enumerated
- Jun 2, 2010
- Record last updated
- Apr 26, 2022
- Medicare enrollment
- Enrolled (PECOS I20131003000220); accepts Medicare assignment
- Medical or professional school
- Medical College Of Wisconsin, 2010
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,464 in Wisconsin → Look up another NPI →
Also registered at 225 Memorial Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Steven Blaha, MDInternal Medicine Physician1407865181
- Katherine BorkovecSpeech-Language Pathologist1528664414
- Jessica Braun, PTAPhysical Therapy Assistant1528513272
Verify Erin K. Eferem in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 60303-20Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
14% fewer Medicare Part D claims than the average emergency medicine physician in 2024
194 Medicare Part D claims for 151 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 36 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen19 claims
- Cephalexin17 claims
- Prednisone17 claims
- Tramadol Hcl15 claims
- Ondansetron Odt13 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
- Thedacare Regional Medical Center - Appleton, IncOshkosh, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Erin K. Eferem among 1,464 emergency medicine physician records in Wisconsin
Erin K. Eferem, 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 2010, is newer than 56% of them.
- NPI issued2010 · 56% of these records are older, 42% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2010 · median 2011 among the 844 with a school on file
- Record last updated2022 · 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).
6 emergency medicine physician records list a practice address in Berlin
They are 6 of the 132 NPPES records with a practice address in Berlin, and 1,464 emergency medicine physician records in Wisconsin.
All 1,464 in Wisconsin → Every provider in Berlin → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Maria Cruz-Apolinario, MDBerlin, WI 549231215926795
- Mary Cummins, M.D.Berlin, WI 549231225074214
- James Heinzen, M.D.Berlin, WI 549231013908409
- P Shattuck, MDBerlin, WI 549231740273630
- John Silkey, MDBerlin, WI 549231073506192
- Lauren Barlow, M.D.Appleton, WI 549151417244518
- Nicholas Bope, MDAppleton, WI 549151902217284
- Jojo HammondAppleton, WI 549151346414091
Common questions
What is Erin K. Eferem, M.D.'s NPI number?
Erin K. Eferem, M.D.'s National Provider Identifier (NPI) is 1700106796, issued on Jun 2, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Erin K. Eferem, M.D. located?
The NPPES record lists a practice address at 225 Memorial Dr, Berlin, WI, 54923. Phone: (920) 361-5525. Providers update this record themselves, so call before visiting.
How can I verify Erin K. Eferem, M.D.'s license?
NPPES lists Wisconsin license number 60303-20, 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 Erin K. Eferem, M.D. prescribe under Medicare Part D?
In 2024, Erin K. Eferem, M.D. had 194 Medicare Part D claims for 151 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.