Todd A. Mahr, MD
Pediatric Allergy/Immunology Physician · La Crosse, WI
Todd A. Mahr, MD is a pediatric allergy/immunology physician with a practice address in La Crosse, Wisconsin, and NPI 1659374411, issued on May 24, 2005. Check the license (Wisconsin 26831, as entered in NPPES) on the Wisconsin Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Todd A. Mahr
- Credential
- MD
- Primary taxonomy
- Pediatric Allergy/Immunology Physician 2080P0201X
- License numbers
- 26831 WI
29460 IA
37440 MN
Self-reported in NPPES; status is on the state search - Practice location
- 1836 South Ave, La Crosse, WI 54601
- Phone
- (608) 782-7300
- Enumerated
- May 24, 2005
- Record last updated
- Oct 8, 2013 (not updated in 13 years: call before relying on the address or phone)
- Medicaid ID
- 30685900 WI
- Medicare enrollment
- Enrolled (PECOS I20101201001413); accepts Medicare assignment
- Medical or professional school
- University Of Wisconsin School Of Medicine, 1984
- Entity
- Type 1 · individual
8 nearest pediatric allergy/immunology physician records → All 22 in Wisconsin → Look up another NPI →
Also registered at 1836 South Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Frank Aberger, MDGastroenterology Physician1396748711
- Bradley Abicht, DPMPodiatrist1962632166
- Carter Abicht, DOAnesthesiology Physician1932736642
- Grace AbichtCertified Registered Nurse Anesthetist1003651555
- Paul Abicht, CRNACertified Registered Nurse Anesthetist1528061843
- Mateen Abidi, M.DCardiovascular Disease Physician1730333980
Verify Todd A. Mahr in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 26831Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% more Medicare Part D claims than the average pediatric allergy/immunology physician in 2024
332 Medicare Part D claims for 33 beneficiaries, against an average of 259 among the 198 providers of this specialty who prescribed in Part D. Brand-name drugs were 45% of claims.
Most prescribed
- Montelukast Sodium74 claims
- Fluticasone Propionate48 claims
- Fluticasone-Salmeterol29 claims
- Breo Ellipta16 claims
- Arnuity Ellipta15 claims
- Advair Hfa14 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.
Industry payments in 2024: $90,529.55
67 payments; by number, the most common kind was travel and lodging; the largest payer was Genzyme Corporation. The 289 providers of this specialty with any payment received $7,101.54 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 3 group practices
- Gundersen Clinic LtdOnalaska, WI
- Gundersen Lutheran Medical Center IncWinona, MN
- Gundersen Regional Clinics, LLCDecorah, IA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Todd A. Mahr among 22 pediatric allergy/immunology physician records in Wisconsin
Todd A. Mahr, MD is one of 22 pediatric allergy/immunology physician records with a practice address in Wisconsin. 55% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 95% newer
- In a Medicare fileYes · 55% of these records are
- In the CMS Doctors and Clinicians fileYes · 41% of these records are
- Record last updated2013 · 73% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0201X and a Wisconsin practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Allergy/Immunology Physician providers in Wisconsin
There are 22 pediatric allergy/immunology physician records in Wisconsin.
All 22 in Wisconsin → Every provider in La Crosse → Pediatric Allergy/Immunology Physician nationwide →
The 8 pediatric allergy/immunology physician records with the nearest ZIP codes
- Samantha KnoxLa Crosse, WI 546011659613263
- Eric Schauberger, D.O., PH.D.La Crosse, WI 546011780959924
- Bradley Locke, D.O.Green Bay, WI 543131336300276
- James Gern, MDMadison, WI 537921154399038
- Daniel Jackson, M.D.Madison, WI 537921003823923
- Sameer Mathur, MD PHDMadison, WI 537921063488138
- Sima Ramratnam, M.D.Madison, WI 537921699004812
- Jo Wilson, M.D.Madison, WI 537921548622715
Common questions
What is Todd A. Mahr, MD's NPI number?
Todd A. Mahr, MD's National Provider Identifier (NPI) is 1659374411, issued on May 24, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Todd A. Mahr, MD located?
The NPPES record lists a practice address at 1836 South Ave, La Crosse, WI, 54601. Phone: (608) 782-7300. Providers update this record themselves, so call before visiting.
How can I verify Todd A. Mahr, MD's license?
NPPES lists Wisconsin license number 26831, 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 Todd A. Mahr, MD prescribe under Medicare Part D?
In 2024, Todd A. Mahr, MD had 332 Medicare Part D claims for 33 beneficiaries; the average among pediatric allergy/immunology physician prescribers was 259. 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.