5
1 Rating
Summary
Dr. Michael Brennan specializes in cardiovascular disease and internal medicine, bringing over four decades of medical expertise to his practice. He earned his medical degree from the University of Oklahoma College of Medicine and completed his residency at AMI Presbyterian Denver Hospital. With 42 years of experience treating heart conditions, Dr. Brennan has developed extensive knowledge in managing complex cardiovascular disorders. He is fluent in both English and Spanish, allowing him to serve a diverse patient population.
Dr. Brennan practices at multiple locations in Sheridan, Wyoming, including the Heart Center and Sheridan Memorial Hospital, and maintains affiliations with St. Vincent Regional Hospital and Frances Mahon Deaconess Hospital. He focuses on treating heart rhythm disorders such as atrial fibrillation and ventricular arrhythmia. His diagnostic expertise includes performing electrocardiograms and echocardiograms to evaluate heart function and structure. Patients …consistently rate Dr. Brennan highly, giving him a perfect 5.0 average rating on Vitals.
Read More Read less Dr. Brennan practices at multiple locations in Sheridan, Wyoming, including the Heart Center and Sheridan Memorial Hospital, and maintains affiliations with St. Vincent Regional Hospital and Frances Mahon Deaconess Hospital. He focuses on treating heart rhythm disorders such as atrial fibrillation and ventricular arrhythmia. His diagnostic expertise includes performing electrocardiograms and echocardiograms to evaluate heart function and structure. Patients …consistently rate Dr. Brennan highly, giving him a perfect 5.0 average rating on Vitals.
Overview based on verified provider data
Quick Facts
- accepting new patients
- 42 years of experience
- speaks English, Spanish
- Ami Presbyterian Denver Hospital
- 2 specialties
- 13 areas of expertise
- 2 board certifications
- 3 hospital affiliations
- 2 office locations
- Male
Patients’ Perspective
- Gave an accurate diagnosis
- Had a good bedside manner
- Spent time with me
Based on patient feedback. Read the reviews
Office Locations
Dr. Michael Ward Brennan has 2 locationsHeart Center
1333 W 5th St Ste 103Sheridan, WY 82801Mon8:00 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 - 4:00 pm
SatClosed
SunClosed
Compare with Similar Doctors
 |  |  | |
| Dr. Michael Ward Brennan, MD | Dr. Hugh Kenworthy Batty, MD | Dr. Jennifer Jill Dacus, MD | Dr. David Charles Walker, DO |
| Cardiovascular Disease | Internal Medicine | Oncology | Internal Medicine |
| Accepts New Patients | Accepts New Patients | Accepts New Patients | |
| 42 Years of Experience | 49 Years of Experience | 26 Years of Experience | 32 Years of Experience |
| No Virtual Visit Option | No Virtual Visit Option | No Virtual Visit Option | No Virtual Visit Option |
| Speaks English, Spanish | Speaks English | Speaks English | Speaks English, Spanish |
| Sheridan , WY | Sheridan , WY | Olympia , WA | Sheridan , WY |
| Med School: University Of Oklahoma College Of Medicine | Med School: Universidad Autonoma De Ciudad Juarez Instituto De Ciencias Biomedicas | Med School: Univ Of Tx Hlth Sci Ctr At San Antonio Joe R & Teresa Lozano Long Schof Med | Med School: Des Moines University College Of Osteopathic Medicine |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. Michael Ward Brennan
Medical Specialties
Dr. Michael Ward Brennan has the following 2 specialties
Specialty Expertise
Dr. Michael Ward Brennan has the following 13 areas of expertise
Certifications, License, & Education
42 Years Experience
Dr. Michael Ward Brennan holds an expired medical license in the state of Wyoming.
Medical License
Medical Doctor with an expired medical license in the state of Wyoming that expired in 2026.
Education & Training
Residency
Completed their residency at Ami Presbyterian Denver Hospital.
Medical School
Graduated from University Of Oklahoma College Of Medicine in 1984.
NPI Number
Dr. Brennan's NPI number is 1619903705.
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Frequently Asked Questions
- Is Dr. Michael Brennan accepting new patients?
- Dr. Michael Brennan is accepting new patients on Vitals. View Dr. Michael Brennan's profile on Vitals to make an appointment.
- How can I make an appointment with Dr. Michael Brennan?
- You can find contact information for Dr. Michael Brennan here on Vitals.
- Does Dr. Michael Brennan accept my insurance?
- You can see the insurance plans that Dr. Michael Brennan accepts on their Vitals profile.
- Where is Dr. Michael Brennan's office located?
- Dr. Michael Brennan's office is located at 1333 W 5th St Ste 103, Sheridan, WY, 82801.
- Which hospitals is Dr. Michael Brennan affiliated with?
- Dr. Michael Brennan is affiliated with Sheridan Memorial Hospital, St Vincent Regional Hospital, and Frances Mahon Deaconess Hospital.
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