3
2 Ratings
Summary
Dr. John Brennan is an experienced physician specializing in internal medicine, family medicine, and emergency medicine. He earned his medical degree from the University of Wisconsin School of Medicine & Public Health and brings nearly six decades of clinical experience to his practice. Dr. Brennan is fluent in both Spanish and English.
Dr. Brennan practices at Mayo Clinic Health System Sparta and serves patients in La Crescent, Minnesota. He treats conditions including acute sinusitis and sleep disorders. His expertise includes performing facial and sinus X-rays as well as coordinating at-home sleep studies. Patients have given him an average rating of 3.0 on Vitals.
Dr. Brennan practices at Mayo Clinic Health System Sparta and serves patients in La Crescent, Minnesota. He treats conditions including acute sinusitis and sleep disorders. His expertise includes performing facial and sinus X-rays as well as coordinating at-home sleep studies. Patients have given him an average rating of 3.0 on Vitals.
AI-generated from data on this provider profile.
Quick Facts
- 59 years of experience
- 1 insurance plan accepted
- speaks Spanish, English
- University Of Wisconsin School Of Medicine & Public Health
- 3 specialties
- 5 areas of expertise
- 3 board certifications
- 1 hospital affiliation
- 1 office location
- Male
Patients’ Perspective
- Gave an accurate diagnosis
- Had a good bedside manner
- Spent time with me
Based on patient feedback. Read the reviews
Office Location
Compare with Similar Doctors
 |  |  |  |
| Dr. John Thaddeus Brennan, MD | Dr. Michelle Xiao Song, MD | Traci Jean Morken | Dr. Joshua Ross Johnston, MD |
| Internal Medicine | Internal Medicine | Nurse Practitioner | Anesthesiology |
| Accepts New Patients | |||
| 59 Years of Experience | 6 Years of Experience | 22 Years of Experience | |
| No Virtual Visit Option | Virtual Visit Available | No Virtual Visit Option | No Virtual Visit Option |
| Speaks Spanish, English | Speaks English, Mandarin, Spanish | Speaks Spanish, English | |
| La Crescent , MN | Denver , CO | Winona , MN | Manitowoc , WI |
| Med School: University Of Wisconsin School Of Medicine & Public Health | Med School: UCLA's David Geffen School of Medicine | Med School: University Of Iowa | |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. John Thaddeus Brennan
Medical Specialties
Dr. John Thaddeus Brennan has the following 3 specialties
Specialty Expertise
Dr. John Thaddeus Brennan has the following 5 areas of expertise
Certifications, License, & Education
59 Years Experience
MEDICAL LICENSE
Medical Doctor, Minnesota, Inactive
EDUCATION & TRAINING
Medical School
University Of Wisconsin School Of Medicine & Public HealthGraduated in 1967
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Frequently Asked Questions
- Is Dr. John Brennan accepting new patients?
- Dr. John Brennan has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
- Does Dr. John Brennan accept my insurance?
- You can see the insurance plans that Dr. John Brennan accepts on their Vitals profile.
- Which hospitals is Dr. John Brennan affiliated with?
- Dr. John Brennan is affiliated with Mayo Clinic Health System Sparta.
- Where is Dr. John Brennan's office located?
- Dr. John Brennan's office is located at 524 N Elm St, La Crescent, MN, 55947.
- Does Dr. John Brennan accept virtual/telehealth appointments?
- Dr. John Brennan has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
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