Erika McMahon, M.D.
Emergency Medicine Physician · La Crosse, WI
Erika McMahon, M.D. is an emergency medicine physician with a practice address in La Crosse, Wisconsin, and NPI 1437567252, issued on Jul 24, 2014. Check the license (Wisconsin 83544, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Erika McMahon
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 83544 WI
4301113292 MI
59488 MN
Self-reported in NPPES; status is on the state search - Practice location
- 700 West Ave S., La Crosse, WI 54601
- Phone
- (608) 785-0940
- Enumerated
- Jul 24, 2014
- Record last updated
- Oct 9, 2024
- Medicare enrollment
- Enrolled (PECOS I20150827001662); accepts Medicare assignment
- Medical or professional school
- Michigan State University College Of Human Medicine, 2014
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,464 in Wisconsin → Look up another NPI →
Also registered at 700 West Ave S.
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marcio Bottene Villa Albers, M.DDiagnostic Radiology Physician1952893711
- Bryan Gordon, DOHospitalist Physician1518544303
Verify Erika McMahon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 83544Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
47% fewer Medicare Part D claims than the average emergency medicine physician in 2024
119 Medicare Part D claims for 85 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 20 claims were for opioids.
Most prescribed
- Prednisone15 claims
- Oxycodone Hcl13 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
- Mayo ClinicRochester, MN
- Mayo Clinic Health System-Southwest Wisconsin Region IncLa Crosse, WI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Erika McMahon among 1,464 emergency medicine physician records in Wisconsin
Erika McMahon, 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 2014, is newer than 67% of them.
- NPI issued2014 · 67% of these records are older, 30% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2014 · median 2011 among the 844 with a school on file
- Record last updated2024 · 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).
72 emergency medicine physician records list a practice address in La Crosse
They are 72 of the 3,735 NPPES records with a practice address in La Crosse, and 1,464 emergency medicine physician records in Wisconsin.
All 1,464 in Wisconsin → Every provider in La Crosse → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Scott Brunk, MDLa Crosse, WI 546011497759062
- Stephen Copps, MDLa Crosse, WI 546011548265804
- Christopher Eberlein, MDLa Crosse, WI 546011629073739
- Aaron Hanesworth, MDLa Crosse, WI 546011790780302
- David Hendrickson, MDLa Crosse, WI 546011457341950
- Jeffery Hillesland, MDLa Crosse, WI 546011730184219
- Stephen Israel, MDLa Crosse, WI 546011376539700
- Daniel Lenselink, MDLa Crosse, WI 546011518957018
Common questions
What is Erika McMahon, M.D.'s NPI number?
Erika McMahon, M.D.'s National Provider Identifier (NPI) is 1437567252, issued on Jul 24, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Erika McMahon, M.D. located?
The NPPES record lists a practice address at 700 West Ave S., La Crosse, WI, 54601. Phone: (608) 785-0940. Providers update this record themselves, so call before visiting.
How can I verify Erika McMahon, M.D.'s license?
NPPES lists Wisconsin license number 83544, 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 Erika McMahon, M.D. prescribe under Medicare Part D?
In 2024, Erika McMahon, M.D. had 119 Medicare Part D claims for 85 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.