Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Todd A Mahr, MD

Individual provider Pediatric Allergy/Immunology Physician · NPI 1659374411

Todd A Mahr, MD is an Allergy/Immunology in LA Crosse, Wisconsin. Graduated from University of Wisconsin School of Medicine in 1984, 42 years ago. Practices with Gundersen Lutheran Medical Center Inc, a 896-clinician group and accepts Medicare assignment. Licensed in Iowa, Minnesota and Wisconsin.

Years since qualifying
42
Trained at
University of Wisconsin School of Medicine
Licensed in
IA, MN, WI
In the registry since
2005
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1836 S Ave
LA Crosse, WI 54601-5429
Phone: (608) 782-7300
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Pediatric Allergy/Immunology Physician (primary) Taxonomy 2080P0201X · Licence 26831 (WI)
Pediatric Allergy/Immunology Physician Taxonomy 2080P0201X · Licence 29460 (IA)
Pediatric Allergy/Immunology Physician Taxonomy 2080P0201X · Licence 37440 (MN)

Record details

NPI number1659374411
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 24, 2005
Last updated in NPPESOctober 8, 2013
Mailing address1836 South Ave, La Crosse, WI 54601-5429

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyALLERGY/IMMUNOLOGY
Medical schoolUNIVERSITY OF WISCONSIN SCHOOL OF MEDICINE
Graduated 1984 (42 years in practice)
Group practice Gundersen Lutheran Medical Center Inc — 896 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations8 on file with Medicare

Other providers in LA Crosse