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Dr. Michael Brennan, MD

Cardiology* Age 66
Dr. Michael Brennan, MD
4.4 (5 Ratings)
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Dr. Michael Brennan, MD is a Cardiologist in Sheridan, WY.
Dr. Michael Brennan, MD
4.4 (5 Ratings)
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Dr. Michael Brennan, MD

Cardiology* Age 66
Sheridan, WY
Accepting new patients
40 years of experience
Dr. Michael Brennan, MD is a Cardiologist in Sheridan, WY.

About

Dr. Brennan graduated from UNIVERSITY OF OKLAHOMA / HEALTH SCIENCES CENTER. Dr. Michael Brennan, MD is a Cardiologist in Sheridan, WY and has 40 years experience. Dr. Brennan currently practices at Practice and are affiliated with Johnson County Healthcare Center and Sheridan Memorial Hospital. Dr. Brennan has experience treating conditions like Cardiomegaly, Mitral and Aortic Valve Disorder and Pulmonary Hypertension among other conditions at varying frequencies. At present, Dr. Brennan received an average rating of 4.4/5 from patients and has been reviewed 5 times. Dr. Brennan's office accepts new patients. Dr. Brennan is board certified in Cardiovascular Disease and accepts multiple insurance plans.

Explains Conditions Well

Patients said this doctor explains conditions well.

Trustworthy

Patients said this doctor is trustworthy.

Low Wait Times

Patients are usually seen in 10 minutes or less.

Friendly Staff

Patients said the staff was friendly.

Easy Scheduling

Patients said scheduling was easy.

Experience Check

Enter a condition or procedure
Cardiomegaly
Mitral and Aortic Valve Disorder
Pulmonary Hypertension
Cardiomegaly
Mitral and Aortic Valve Disorder
Pulmonary Hypertension
Cardiomegaly
Mitral and Aortic Valve Disorder
Pulmonary Hypertension
Aortic Ectasia
Aortic Valve Disease
Atherosclerosis of Aorta
Chronic Pulmonary Heart Diseases (incl. Pulmonary Hypertension)
First Degree Heart Block
Sinus Bradycardia
Tricuspid Valve Disease
Arrhythmias
Mitral Valve Disease
Sinus Tachycardia
Acute Congestive Heart Failure
Acute Coronary Syndrome
Angina
  • View other providers who treat Angina
Aortic Valve Regurgitation
Atherosclerosis
Atrial Fibrillation
Atrial Flutter
Cardiomyopathy
Cardiomyopathy, Dilated
Cardiomyopathy, Hypertrophic
Chest Pain
Chronic Congestive Heart Failure
Congenital Heart Defects
Congestive Heart Failure
Coronary Artery Disease (CAD)
Heart Attack (Acute Myocardial Infarction)
Heart Disease
Heart Murmur
Heart Palpitations
Hyperlipidemia
Hypertension
Hypertensive Chronic Kidney Disease
Hypertensive Heart and Chronic Kidney Disease
Hypertensive Heart Disease
Hypertensive Heart with Failure
Hypertensive Heart without Failure
Hypotension
Hypotension (Excluding Maternal)
Lipid Disorders
Mitral Valve Prolapse
Mitral Valve Regurgitation
Orthostatic Hypotension
Paroxysmal Atrial Fibrillation
Patent Foramen Ovale (PFO)
Pericardial Disease
Peripheral Edema
Peripheral Vascular Disease (PAD, PVD)
Rheumatic Aortic Valve Disorders
Rheumatic Tricuspid Disease
Second Degree Heart Block
Sick Sinus Syndrome
Supraventricular Tachycardia
Syncope
  • View other providers who treat Syncope
Systolic Heart Failure
Third Degree Heart Block
Type 2 Heart Block - Mobitz
Ventricular Tachycardia (VT)
Automatic Implantable Cardioverter Defibrillator (ICD) Implantation
Cardiac Catheterization (incl. Coronary Angiography)
Cardiac Catheterization with Robotic Assist
Cardiac Myocardial Perfusion Imaging
Cardiac Ultrasound
Cardioversion, Elective
Cardioverter-Defibrillator or Pacemaker Insertion, Removal or Repair
Coronary Angioplasty, Atherectomy and Stent
Electrocardiogram (EKG)
Tilt_Testing
Vascular Duplex Ultrasonography and Plethysmography
Abdominal Aortic Aneurysm (AAA)
Acute Deep Vein Thrombosis (DVT)
Acute Endocarditis
Acute Venous Embolism Thrombosis
Aneurysm
  • View other providers who treat Aneurysm
Aneurysm of Heart
Aortic Aneurysm
Aortic Dissection
Aortic Stenosis
Arteriovenous Fistula
Atrial Septal Defect
Atypical Atrial Flutter
Benign Heart Tumors
Cardiac Tamponade
Cardiomyopathy, Restrictive
Carotid Artery Disease
Chronic Deep Vein Thrombosis (DVT)
Chronic Venous Embolism Thrombosis
Congenital Aortic Valve Disorders
Congenital Heart Disease
Constrictive Pericarditis
Cor Pulmonale
Coronary Artery Aneurysm
Coronary Artery Dissection
Coronary Vessel Malformation
Deep Vein Thrombosis (DVT)
Endocarditis
Hyperkalemia
Hypokalemia
Infective Endocarditis
Kawasaki Disease
Limb Swelling Caused by Fluid Overload
Lipidoses (incl. Gaucher Disease)
Long QT Syndrome
Mitral Valve Stenosis
Muscular Dystrophy (MD)
Noninfective Endocarditis
Nonrheumatic Mitral Stenosis
Nonrheumatic Tricuspid Disease
Pericarditis
Postpartum Cardiomyopathy
Primary Pulmonary Hypertension
Prinzmetal Angina
Pulmonary Edema
Pulmonary Valve Disease
Rheumatic Mitral Stenosis
Septal Defect
Subacute Endocarditis
Systemic Vasculitis
Tetralogy of Fallot
Typical Atrial Flutter
Unstable Angina
Ventricular Fibrillation
Ventricular Septal Defect
Vitamin D Deficiency
Wolff-Parkinson-White Pattern
Arrhythmia Screening
Cardiac Imaging
Cardiovascular Diagnostic Test
Cardiovascular Stress Test
Chest CT (incl. Heart and Lungs)
Chest Pain Evaluation
Cholesterol Screening
Coronary Angiogram
Dobutamine Thallium Stress Test
HeartAware Online Risk Screening
Insertion of Left Ventricular Lead for Pacemaker or Cardioverter and Defibrillator
Nuclear Stress Testing
Pacemaker Insertion or Replacement
Peripheral Arterial Disease Screening (PAD)
Peripheral Artery Catheterization
Pharmacologic Nuclear Stress Test
Pharmacologic Stress Test, Adenosine
Removal or Revision of Pacemaker or Cardioverter and-or Defibrillator
Stress Test
Structural Heart Disease Evaluations and Treatment
TCD Bubble Test
Thoracentesis
Tilt Table Testing
Treadmill Stress Test

Insurance Accepted

* Please verify this information when scheduling an appointment.
  • First Health (Coventry Health Care) PPO
  • Blue Card PPO
  • Nexus Open Access
    Options PPO
    Navigate POS
    Navigate HMO
    Choice Plus POS
  • Open Access Plus
    Cigna PPO
  • Open Choice PPO
    Elect Choice (Open Access) EPO
    Choice Plus POS II

Locations

  1. 1 Thomas H Niethammer MD PC
    1333 W 5th St Ste 206, Sheridan, WY 82801
    Icon Directions Right Arrow Directions Phone Icon (307) 675-4610
  2. 2 Sheridan Memorial Hospital
    1401 W 5th St, Sheridan, WY 82801
    Icon Directions Right Arrow Directions Phone Icon (307) 672-1000

Patient Satisfaction

Likelihood to recommend Dr. Brennan
4.4
Based on 5 Reviews
5 Stars (4)
4 Stars (0)
3 Stars (0)
2 Stars (1)
1 Star (0)

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Patient Reviews
Mar 01, 2019
Thoroughly professional, friendly, knowledgable, good listener, very nice manner, calm cool and collected, easygoing but thorough, overall very impressive. A made-for-TV Doctor that inspires confidence.
Sheridan — Mar 01, 2019
See more reviews on Healthgrades
Photo: Dr. Michael Brennan, MD
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Dr. Brennan's Office & Staff

  • Ease of scheduling urgent appointments
  • Office environment, cleanliness, comfort, etc.
  • Staff friendliness and courteousness
  • Total wait time (waiting & exam rooms)

Experience with Dr. Brennan

  • Level of trust in provider's decisions
  • How well provider explains medical condition(s)
  • How well provider listens and answers questions
  • Hpends appropriate amount of time with patients

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About Me

Specialties*
Cardiology
Internal Medicine
Specialties*
  • *Sharecare does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
Education

Education

Medical Education
  • UNIVERSITY OF OKLAHOMA / HEALTH SCIENCES CENTER
    1984
Medical Education

Board Certifications

Board Certifications
  • Cardiovascular Disease and Internal Medicine
Board Certifications
What’s a board certification and why is it important that my provider has one?

A board certification represents a provider’s dedication to ongoing training in one or more specialties, including the completion of intensive exams. While not all specialties have board certifications, if your provider does have one they’ve taken the extra step to master their specialty and to keep up with the latest advancements in their field.
Common Questions and Answers
Responses are sourced directly from patients.
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Frequently Asked Questions

Find contact information here to make an appointment.

A list of accepted insurance providers is available on the Sharecare insurance check. It is always a good idea to verify your insurance when making an appointment.

New patients are generally accepted by Dr. Michael Brennan, MD. To arrange an appointment, call the number on Dr. Brennan's profile.

Dr. Brennan frequently treats the following conditions: Cardiomegaly, Mitral and Aortic Valve Disorder and Pulmonary Hypertension. See more on Sharecare.

Dr. Michael Brennan, MD is affiliated with Johnson County Healthcare Center and Sheridan Memorial Hospital.

Yes, Dr. Michael Brennan, MD holds board certification in Cardiovascular Disease and Internal Medicine.

Hospital Affiliations

  • Johnson County Healthcare Center

    497 W Lott St, Buffalo, WY

  • Sheridan Memorial Hospital

    1401 W 5th St, Sheridan, WY