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Checked Sep 30, 2026

Dr. John Frey

Pulmonologist in La Crosse, WI
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9 years in practice NPI 1538600754
AsthmaBronchiectasisChronic coughCOPD Telehealth

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(608) 785-0940
Mayo Clinic Health System-Southwest Wisconsin Region Inc
700 W Ave S
La Crosse, WI 54601
+2 more clinics · see all locations

About Dr. John Frey

Dr. John Frey is a pulmonologist in La Crosse, WI with 9 years of experience since medical school.

Dr. Frey sees patients at Mayo Clinic Health System-Southwest Wisconsin Region Inc, 700 W Ave S, La Crosse, WI 54601 and 2 other locations. To make an appointment, call (608) 785-0940. Dr. Frey is affiliated with Mayo Clinic Health System-Franciscan Medical Center Inc, Mayo Clinic HLTH Systm Franciscan Hlthcare Sparta and Crossing Rivers Health Medical Center. Telehealth (video) visits are offered.

Conditions treated include Asthma, Bronchiectasis, Chronic cough, COPD, Pulmonary embolism.

Conditions treated

Asthma J45 Bronchiectasis J47 Chronic cough R05.3 COPD J44 Pulmonary embolism I26 Pulmonary fibrosis J84.1 Lung nodules R91.1 Sarcoidosis D86

Education & board certification

Medical schoolGraduated 2017

Locations & hours

LocationAddressPhone
Mayo Clinic Health System-Southwest Wisconsin Region Inc700 W Ave S, La Crosse, WI 54601(608) 785-0940
Mayo Clinic Health System-Southwest Wisconsin Region Inc800 E Blackhawk Ave, Prairie Du Chien, WI 53821(608) 326-0808
Mayo Clinic Health System-Southwest Wisconsin Region Inc800 W Ave S, La Crosse, WI 54601(608) 785-0940
Mayo Clinic Health System-Franciscan Medical Center Inc
Hospital affiliation		700 West Avenue South, La Crosse, WI 54601(608) 785-0940
Mayo Clinic HLTH Systm Franciscan Hlthcare Sparta
Hospital affiliation		310 W Main St, Sparta, WI 54656(608) 269-2132
Crossing Rivers Health Medical Center
Hospital affiliation		37868 US Hwy 18, Prairie Du Chien, WI 53821(608) 357-2000

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Questions about Dr. John Frey

Is Dr. John Frey accepting new patients?

Please call Mayo Clinic Health System-Southwest Wisconsin Region Inc at (608) 785-0940 to ask whether Dr. John Frey is taking new patients.

Which hospital is Dr. John Frey affiliated with?

Dr. John Frey is affiliated with Mayo Clinic Health System-Franciscan Medical Center Inc, Mayo Clinic HLTH Systm Franciscan Hlthcare Sparta, Crossing Rivers Health Medical Center.

Where does Dr. John Frey see patients?

Mayo Clinic Health System-Southwest Wisconsin Region Inc, 700 W Ave S, La Crosse, WI 54601. Mayo Clinic Health System-Southwest Wisconsin Region Inc, 800 E Blackhawk Ave, Prairie Du Chien, WI 53821. Mayo Clinic Health System-Southwest Wisconsin Region Inc, 800 W Ave S, La Crosse, WI 54601.

Does Dr. John Frey offer telehealth visits?

Yes. Dr. John Frey offers telehealth (video) visits. New patients may need an in-person first visit.

This profile is for information only and is not a referral or medical advice. Always confirm details with the practice before your visit. Details were last checked on Sep 30, 2026. Report incorrect information.