Allergists in Wisconsin
105 doctors with an allergy or immunology specialty list a practice address in Wisconsin. 82 are in current Medicare records as allergists.
By metro area
Outside metro areas
Allergists 17
Beaver Dam 1
Priyanka Timothy, MDAllergist
McHs Hospitals Inc1000 N Oak Ave, Marshfield, WI 54449(715) 387-5511
Beaver Dam Community Hospitals Inc.705 S University Ave, Mmc Beaver Dam Medical Offices, Beaver Dam, WI 53916(920) 887-7181
Beaver Dam Community Hospitals Inc.707 S University Ave, Mmc Beaver Dam Hospital, Beaver Dam, WI 53916(920) 887-7181
Medicare records: allergy/immunology (October 2026).Accepts Medicare assignment.Telehealth in Medicare claims.Report a problem
Fort Atkinson 2
Robert J. Glinert, MDAllergist
Fort Healthcare Inc611 Sherman Ave E, Fort Atkinson, WI 53538(920) 568-1000
Medicare records: allergy/immunology (October 2026).Accepts Medicare assignment.Report a problem
Ashleigh A. Olson, MDAllergist
Dean Health Systems Inc740 Reena Ave, Fort Atkinson, WI 53538(920) 563-0888
Medicare records: allergy/immunology (October 2026).Accepts Medicare assignment.Telehealth in Medicare claims.Report a problem
Lake Geneva 2
Yusaf M. Hussain, DOAllergist
Mercy Health System CorporationN2950 State Rd, Suite 67, Lake Geneva, WI 53147(262) 245-0535
Medicare records: allergy/immunology (October 2026).May accept Medicare assignment.Report a problem
Ronald Ragotzy, MDAllergist
N2950 State Road 67, Lake Geneva, WI 53147(262) 245-0535
National provider registry only, updated September 2025.Report a problem
Marinette 4
Lakshmi Gopalakrishnan Nair, MDAllergist
Oconto Hospital and Medical Center Inc2820 Roosevelt Rd, Marinette, WI 54143(715) 735-5225
Medicare records: allergy/immunology (October 2026).Accepts Medicare assignment.Telehealth in Medicare claims.Report a problem
Ishaan Jakhar, MDAllergist
Oconto Hospital and Medical Center Inc2820 Roosevelt Rd, Marinette, WI 54143(715) 735-5225
Medicare records: allergy/immunology (October 2026).Accepts Medicare assignment.Report a problem
Ogechukwu Ndum, MDAllergist
Oconto Hospital and Medical Center Inc2820 Roosevelt Rd, Marinette, WI 54143(715) 735-5225
Medicare records: allergy/immunology (October 2026).Accepts Medicare assignment.Report a problem
Robert Sonnenburg, MDAllergist
Baycare Clinic LLP3200 Shore Dr, Marinette, WI 54143(920) 288-8350
Medicare records: allergy/immunology (October 2026).Accepts Medicare assignment.Report a problem
Marshfield 1
Kevin R. Keller, MDAllergist
McHs Hospitals Inc1000 N Oak Ave, Marshfield, WI 54449(715) 387-5511
Medicare records: allergy/immunology (October 2026).Accepts Medicare assignment.Telehealth in Medicare claims.Report a problem
Osceola 2
Douglas F. McMahon, MDAllergist
Ladd Memorial Hospital2600 65th Ave, Osceola, WI 54020(715) 294-2111
Medicare records: allergy/immunology (October 2026).Accepts Medicare assignment.Report a problem
Nancy L. Ott, MDAllergist
Ladd Memorial Hospital2600 65th Ave, Osceola, WI 54020(715) 294-2111
Medicare records: allergy/immunology (October 2026).Accepts Medicare assignment.Telehealth in Medicare claims.Report a problem
Platteville 1
Hyder A. Khan, MDAllergist
Medical Associates Clinic P C1240 Big Jack Rd, Platteville, WI 53818(608) 348-6266
Medicare records: allergy/immunology (October 2026).Accepts Medicare assignment.Report a problem
Prairie Du Chien 1
John P. Wheeler, Jr., MDAllergist
Mayo Clinic Health System-Southwest Wisconsin Region Inc800 E Blackhawk Ave, Prairie Du Chien, WI 53821(608) 326-0808
Medicare records: allergy/immunology (October 2026).Accepts Medicare assignment.Telehealth in Medicare claims.Report a problem
Prairie Du Sac 1
John T. Kelly, MDAllergist
University of Wisconsin Medical Foundation Inc250 26th St, Suite 150, Prairie Du Sac, WI 53578(608) 643-2471
Medicare records: allergy/immunology (October 2026).Accepts Medicare assignment.Report a problem
Rhinelander 1
Joseph Hutchison, MDAllergist
Aspirus Rhinelander and Tomahawk Hospitals and Clinics, Inc.2251 N Shore Dr, Rhinelander, WI 54501(715) 361-2000
Medicare records: allergy/immunology (October 2026).Accepts Medicare assignment.Report a problem
Two Rivers 1
Abhilash R. Vaishnav, MDAllergist
Aurora Medical Group, Inc.5300 Memorial Dr, Two Rivers, WI 54241(920) 793-7300
Medicare records: allergy/immunology (October 2026).Accepts Medicare assignment.Report a problem
Pediatric allergists 1
Christopher T. Healy, MDPediatric allergist
University of Wisconsin Medical Foundation Inc611 E Sherman Ave, Fort Atkinson, WI 53538(888) 703-2778
University of Wisconsin Medical Foundation Inc705 S University Ave, Beaver Dam, WI 53916(608) 287-2770
Medicare records: allergy/immunology (October 2026).Accepts Medicare assignment.Telehealth in Medicare claims.Report a problem
ENT doctors who list allergy 1
Ryan D. Black, DOENT doctor (otolaryngic allergy)
Aspirus Rhinelander and Tomahawk Hospitals and Clinics, Inc.2251 N Shore Dr, Rhinelander, WI 54501
Aspirus Rhinelander and Tomahawk Hospitals and Clinics, Inc.401 W Mohawk Dr, Tomahawk, WI 54487(715) 453-7200
Medicare records: Otolaryngology (October 2026). Allergy specialty from the national provider registry.Accepts Medicare assignment.Report a problem
Older registry records 6
These doctors list an allergy specialty and a practice address in Wisconsin, outside its metro areas in the national provider registry, but haven’t updated their record in five years or more and don’t appear in current Medicare records. Many have probably moved or retired. Call before you go.
Show the older records
Ashland 1
James A. Hamp, MDENT doctor (otolaryngic allergy)
1625 Maple Ln, Suite 2, Ashland, WI 54806(715) 682-9311
National provider registry only, not updated since 2011. May have moved or retired.Report a problem
Beloit 1
Amelia R. Rojas, MDAllergist
1905 E Huebbe Parkway, Beloit Health System Inc, Beloit, WI 35311(608) 364-2240
National provider registry only, not updated since 2011. May have moved or retired.Report a problem
Marinette 1
Victoria M. McMeen, MDAllergist
2820 Roosevelt Rd, Marinette, WI 54143(715) 735-5225
National provider registry only, not updated since 2020. May have moved or retired.Report a problem
Marshfield 3
Gerald Bucholtz, MDAllergist
1000 N Oak Ave, Marshfield, WI 54449(715) 387-5186
National provider registry only, not updated since 2007. May have moved or retired.Report a problem
Marshall E. Cusic, Jr., MDAllergist
1000 N Oak Ave, Marshfield, WI 54449(715) 387-5186
National provider registry only, not updated since 2007. May have moved or retired.Report a problem
John T. Twiggs, MDAllergist
1000 N Oak Ave, Marshfield, WI 54449(715) 387-5186
National provider registry only, not updated since 2007. May have moved or retired.Report a problem
From CMS’s Doctors and Clinicians file (October 2026) and the national provider registry, NPPES (October 2026). Listings are free and in alphabetical order; we don’t rate or recommend doctors. How we list doctors