Summary

Dr. Hagan graduated from the University of Tennessee Health Science Center College of Medicine in 1989. He works in Rochester, MN and 1 other location and specializes in Allergy & Immunology and Internal Medicine. Dr. Hagan is affiliated with Mayo Clinic Hospital Methodist Campus, Mayo Clinic Hospital Saint Marys Campus, Mayo Clinic Health Systems Austin, Olmsted Medical Center and Mayo Eugenio Litta Childrens Hospital.

Quick Facts

  • accepting new patients
  • 5
  • 37 years of experience
  • speaks Spanish, English
  • Mayo Clinic And Medical School
  • 1 written review
  • 2 specialties
  • 16 areas of expertise
  • 2 board certifications
  • 5 hospital affiliations
  • 4 office locations
  • Male

Patients’ Perspective

  • Had a good bedside manner
  • Spent time with me
  • Provided follow-up after the visit

Office Locations

Dr. John Bryant Hagan has 4 locations

Mayo Clinic

200 1st St SwRochester, MN 55905
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

Mayo Clinic Hospital Saint Marys Campus

1216 2nd St SwRochester, MN 55902

Olmsted Medical Center

1650 4th St SeRochester, MN 55904

Mayo Clinic Hospital Methodist Campus

201 Center St WRochester, MN 55902

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Dr. John Bryant Hagan, MD
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Dr. John Bryant Hagan, MDDr. David Harold Dockrell, MDDr. Paul Eduard Hermans, MDDr. Conrad James Wilkowske, MD
Allergy & ImmunologyInfectious DiseaseInfectious DiseaseInfectious Disease
Accepts New Patients
37 Years of Experience 36 Years of Experience 66 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks Spanish, English
Rochester , MNRochester , MNRochester , MNRochester , MN
Med School: University Of Tennessee Health Science Center College Of Medicine Med School: Trinity College, University Of Dublin Med School: University of Minnesota, Twin Cities
Current Profile
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Insurance Plans Accepted by Dr. John Bryant Hagan

  • Accepts Medicare
  • Accepts Medicaid

Medical Specialties

Dr. John Bryant Hagan has the following 2 specialties

Specialty Expertise

Dr. John Bryant Hagan has the following 16 areas of expertise

  • Allergies
  • Anaphylaxis
  • Asthma
  • Desensitization
  • Drug Eruptions
  • Food Allergies
  • Hay Fever
  • Hives (Urticaria)
  • Internal Medicine
  • Itching
  • Latex Allergy (Latex Hypersensitivity)
  • Nasal Allergies
  • Nasal Allergy (Rhinitis)
  • Rash
  • Sinusitis
  • Watery Eyes

Certifications, License, & Education

37 Years Experience

Dr. John Bryant Hagan holds an expired medical license in the state of Minnesota.

Medical License

Medical Doctor with an expired medical license in the state of Minnesota that expired in 2026.

Education & Training

Residency

Completed their residency at Mayo Clinic And Medical School.

Medical School

Graduated from University Of Tennessee Health Science Center College Of Medicine in 1989.

NPI Number

Dr. Hagan's NPI number is 1366429573.

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Frequently Asked Questions

Where is Dr. John Hagan's office located?
Dr. John Hagan's office is located at 200 1st St Sw, Rochester, MN, 55905.
Which hospitals is Dr. John Hagan affiliated with?
Dr. John Hagan is affiliated with Mayo Clinic Hospital Methodist Campus, Mayo Clinic Hospital Saint Marys Campus, Mayo Clinic Health Systems Austin, Olmsted Medical Center, and Mayo Eugenio Litta Childrens Hospital.
How can I make an appointment with Dr. John Hagan?
You can find contact information for Dr. John Hagan here on Vitals.
Does Dr. John Hagan accept my insurance?
You can see the insurance plans that Dr. John Hagan accepts on their Vitals profile.
Is Dr. John Hagan accepting new patients?
Dr. John Hagan is accepting new patients on Vitals. View Dr. John Hagan's profile on Vitals to make an appointment.

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