Dr. Karl Undesser, MD

Dr. Karl Undesser, MD

CardiologyMaleAge 63

Accepting new patients

Dr. Karl Undesser, MD is a Cardiology Specialist in Meridian, ID. Dr. Undesser has more experience with Adult Congenital Heart Conditions than other specialists in his area. He is affiliated with medical facilities such as West Valley Medical Center and Saint Alphonsus Regional Medical Center. He is accepting new patients and has indicated that he accepts telehealth appointments. Be sure to call ahead with Dr. Undesser to book an appointment.

Locations

West Valley Cardiology Services

Meridian Office745 S Progress Ave Meridian, ID 83642
1

West Valley Medical Group

Caldwell1906 Fairview Ave Ste 230 Caldwell, ID 83605
2
  • Call
  • Fax
  • Hours
    • Mon: 8:00am - 5:00pm
    • Tue: 8:00am - 5:00pm
    • Wed: 8:00am - 5:00pm
    • Thu: 8:00am - 5:00pm
    • Fri: 8:00am - 5:00pm
    • Sat: closed
    • Sun: closed
  • Directions

Hospital Highlight

Dr. Undesser is affiliated with West Valley Medical Center Caldwell, a highly rated hospital.

At a Glance

  • Explains Conditions Well Patients said this doctor explains conditions well. See reviews
  • Offers Telehealth This provider offers telehealth appointments. Call the office to schedule an appointment.
  • Practices at Top Hospital America’s 100 Best Hospitals for Cardiac Care Award™ See hospitals

More Cardiology Specialists at West Valley Medical Center

Dr. Undesser's Reviews

Likelihood to recommend Dr. Undesser

4.8

Based on 69 ratings

5 Stars
92.7536231884058%
(64)
4 Stars
1.4492753623188406%
(1)
3 Stars
1.4492753623188406%
(1)
2 Stars
1.4492753623188406%
(1)
1 Star
2.898550724637681%
(2)
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How likely are you to recommend
Dr. Undesser?
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What went well
  • Appointment wasn't rushed (61)
  • Explained conditions well (60)
  • Listened & answered questions (60)
What could be improved
  • Didn't listen or answer questions (4)
  • Appointment was rushed (3)
  • Didn't explain conditions well (3)
RecentHighestLowestMost Helpful
Reply Flag
Yes. Dr. Undesser Is very concerned about his patients. He wants to help you feel better. Listens to all your questions and he is very patient. He’s a great Dr. and I would recommend him to family and friends.
What went well
  • Listened & answered questions
What could be improved
No results
1 person found this helpful
Helpful
Everything was good – Jul 19, 2020
Thank you for the positive feedback! We love...Read More
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Reply Flag
Dr Undesser was my husband's and my EP untill he left Idaho cardiology. So sad to see him go. He is a brilliant, no nonsense Dr. He tells it to you straight. He takes time to listen to his patients and works with them. His bedside manner might be a bit abrupt, but his skills and knowledge are impeccable. You won't find a better EP Cardiologist. My husband is on his fifth ICD, all but the last put in and managed by Dr. Undesser very effectively. Wish we could have had him do the last one. Very unhappy with the quality of care my husband now receives.
What went well
No results
What could be improved
No results
2 people found this helpful
Helpful
Sarah J Barker – Jun 17, 2020
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Reply Flag
I AM ALWAYS HAPPY TO SEE DR. UNDESSER =WHOM I HAVE HAD FOR SEVERAL YEARS. HE IS EASY TO TALK TO AND GIVES PRECISE ANSWERS. ALWAYS ASKS RE:MY GENERAL HEALTH AND ANY QUESTIONS I MIGHT HAVE.
What went well
No results
What could be improved
No results
Helpful
LYDIA M. BLACK – Jun 15, 2020
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Reply Flag
It was my pacemaker check at home. It went very well.
What went well
No results
What could be improved
No results
Helpful
Catherine Mooney – May 18, 2020
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Reply Flag
I had a great experience with Dr. Undesser and his entire staff, they were very cordial and made me feel comfortable immediately. Dr. Undesser, in his no nonsense way explained my issues and remedies, in a plain and simple way. Thank you for your service. But i hope i see you as minimally as possible, over the next 20 years.:)
What went well
No results
What could be improved
No results
1 person found this helpful
Helpful
Dale Newberry – May 12, 2020
Thank you for the kind words, Dale! We will be...Read More
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Reply Flag
This was a check on my defibrillator/pacemaker via telephone-I have been a patient of Dr. Undessor for more than 15 years. I have found him to be very professional and interested in my well being. I would recommend Dr. Undessor to anyone who would need his expertise.
What went well
No results
What could be improved
No results
Helpful
Ken Bowman – May 12, 2020
Thank you for your review of Dr. Undesser, Ken!...Read More
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Reply Flag
Everything went smoothly except trying to contact the office by phone. The staff were quite friendly and helpful.
What went well
No results
What could be improved
No results
1 person found this helpful
Helpful
Glen Schofer – May 04, 2020
Thank you so much for the feedback! Glad to hear...Read More
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Reply Flag
It was my yearly follow up . Dr Undesser and his staff listen. That is not my experience with most cardiologist. After a year of struggling with my issue and being told don't worry, I found Dr Undesser and have been with him ever since. He listens and addresses my concerns with knowledge and empathy.
What went well
No results
What could be improved
No results
1 person found this helpful
Helpful
Anita – Apr 23, 2020
Dr. Undesser's Reply – Flag
Thank you for the kind words and feedback, Anita!
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Reply Flag
Dr Undesser has been my cardiologist for many years and I highly recommend him. I have A pacemaker and have it checked personally by him every three months and my appointment is always a pleasant experience all staff is professional and on time and it Is always a pleasure to see Dr Undesser.
What went well
No results
What could be improved
No results
Helpful
Betty M Sawyer – Apr 23, 2020
Thank you so much for the positive feedback! We...Read More
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Reply Flag
Fairly quick meeting to discuss my condition. Dr. Undesser was straight to the point, thorough and explained my condition clearer than my previous providers. His no-non sense/no guarentee approach showcased his expertise and professionalism. I have no doubt I will be choosing him for my future appointments. Thank you Dr!
What went well
No results
What could be improved
No results
1 person found this helpful
Helpful
Brazier – Mar 04, 2020
Thank you so much for the positive feedback! We...Read More
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Reply Flag
My wife and I recently moved to area from Arizona and I needed to find a Cardiologist that I could be comfortable with. Dr Undesser was a good fit for my situation. He took the time to understand my condition fully and explained any options that would be available if required in the future. Could not be more pleased.
What went well
No results
What could be improved
No results
Helpful
Jan 18, 2020
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Dr. Undesser is an excellent, patient care oriented, and to the point Cardiologist. Examination and discussion with him made errors in My wife's previous diagnosis and heart related treatment obvious.
What went well
No results
What could be improved
No results
Helpful
Jerry Kuhnhausen – Jan 14, 2020
Thank you so much for the positive feedback! We...Read More
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Reply Flag
Dr. Undesser is absolutely one of the finest physicians that has ever treated me.
What went well
No results
What could be improved
No results
Helpful
Dec 29, 2019
Dr. Undesser's Reply – Flag
Thank you for the kind words!
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Reply Flag
I found the office and was greeted very quickly and professionally by secretary at window. Filled out a short form, was asked to take a seat and that they would be with me shortly. i had brought a book as waiting times can be extreme. I had barely opened my book when the Doctors assistant asked me to follow her. I was quickly weighed and taken to an office. She took my blood pressure and asked if I had any questions or concerns. She said the Doctor would be right with me, closed door. Within 1-2 minutes the Doctor rapped on the door entered and did my consultation. He had obviously reviewed my charts before and asked i I had any questions or concerns. He suggested changing medications. Said everything looked good and stable and would need to see me in a year unless anything changed. Totally professional experience from start to finish. I would recommend them highly!!
What went well
No results
What could be improved
No results
Helpful
Greg McClean – Dec 03, 2019
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Dr. Undersser is the best. He is always willing to listen to and give me his opinion on anything I have to go over with him. He is super patient and gives me the exact attention I need on my visits.
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Monica – Nov 19, 2019
Thank you for the kind words and feedback,...Read More
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Reply Flag
Great staff and Dr. Undesser is a great communicator as well as a skill doctor!
What went well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Debra Curry – Nov 09, 2019
Thank you for the kind words, Debra! We love to...Read More
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Reply Flag
I always feel comfortable seeing Dr. Undesser. He takes time to listen to me and is always friendly and caring
What went well
  • Appointment wasn't rushed
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
  • Didn't listen or answer questions
Helpful
Nov 06, 2019
Dr. Undesser's Reply – Flag
Thank you for the kind words!
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Reply Flag
I've seen him 3 times and spent less than 15 minutes with him the entire time. Does not actually care what is wrong with you and just prescribes medication. Makes you feel extremely stupid for asking any questions. I wish I could give 0 stars, worst doctor experience I have ever had in my life. If you get a referral to him, GO SOMEWHERE ELSE.
What went well
No results
What could be improved
No results
1 person found this helpful
Helpful
Cindi – Oct 30, 2019
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Reply Flag
I have been going to Dr Undesser for about 13 years. He is the utmost professional and very knowledgeable. I fully trust his recommendations. I would recommend him to any of my family or friends. Thank you for the excellent care!
What went well
  • Appointment scheduling
  • Office environment
  • Staff friendliness
  • Wait times
  • Appointment wasn't rushed
  • Listened & answered questions
  • Explained conditions well
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Todd Nielsen – Oct 22, 2019
×Post a ResponseAre you Dr. Karl Undesser, MD?
Reply Flag
Knowledge and friendly office!
What went well
No results
What could be improved
No results
Helpful
Oct 21, 2019
Dr. Undesser's Reply – Flag
Thank you for the kind words!
×Post a ResponseAre you Dr. Karl Undesser, MD?

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Experience and Background Checks

Experience
Background

Background Check

Healthgrades does not collect malpractice claims information for Idaho
No disciplinary actions found for the years we collect data
No board actions found for the years we collect data
Learn more about background checks

Frequently Treated by Dr. Undesser

Based on treatment records, we have identified the following as areas of care that Dr. Undesser treats more often than their peers. If you are unsure whether Dr. Undesser treats other conditions, please contact the office at (208) 795-5073.

Adult Congenital Heart Conditions

Adult congenital cardiac disorder specialists diagnose and treat heart disorders, such as arrythmias and mitral valve disease, that have been present from birth to adulthood.Compare with other Adult Congenital Heart Conditions specialists.

Dr. Undesser is experienced in the area of Adult Congenital Heart Conditions. See the graph below to learn more about his experience.

Based on claims data for 19 conditions and procedures

Treatments
Dr. Undesser
Similar Providers
Arrhythmias
Atrial Flutter
Atrial Fibrillation
Aortic Valve Disease
Normal
Frequency
High
Frequency
Very High
Frequency

Check Dr. Undesser's experience treating your condition or procedure

Dr. Undesser's conditions and procedures:

  • Ablation for Treatment of Cardiac Arrhythmias
  • Aneurysm
  • Aneurysm and Dissection of Heart
  • Angina
  • Angina and Acute Coronary Syndrome
  • Aortic Aneurysm
  • Aortic Ectasia
  • Aortic Stenosis
  • Aortic Valve Disease
  • Aortic Valve Regurgitation
  • Arrhythmia Screening
  • Arrhythmias
  • Atrial Fibrillation
  • Atrial Flutter
  • Atrial Septal Defect
  • Atrioventricular Septal Defect (AVSD)
  • Automatic Implantable Cardioverter Defibrillator (ICD) Implantation
  • Autonomic Disorders
  • Cardiac Catheterization (incl. Coronary Angiography)
  • Cardiac Imaging
  • Cardiac MRI (Magnetic Resonance Imaging) of Heart or Chest
  • Cardiac Myocardial Perfusion Imaging
  • Cardiac Tamponade
  • Cardiomegaly
  • Cardiomyopathy
  • Cardiomyopathy, Dilated
  • Cardiomyopathy, Hypertrophic
  • Cardiovascular Diagnostic Test
  • Cardiovascular Stress Test
  • Cardioversion, Elective
  • Cardioverter-Defibrillator or Pacemaker Insertion, Removal or Repair
  • Carotid Artery Disease
  • Chest CT (incl. Heart and Lungs)
  • Chest Pain
  • Chest Pain Evaluation
  • Cholesterol Screening
  • Chronic Pulmonary Heart Diseases (incl. Pulmonary Hypertension)
  • Coarctation of the Aorta
  • Congenital Aortic Valve Disorders
  • Congenital Heart Defects
  • Congenital Heart Disease
  • Congestive Heart Failure
  • Coronary Angiogram
  • Coronary Angioplasty, Atherectomy and Stent
  • Coronary Artery Disease (CAD)
  • Dobutamine Thallium Stress Test
  • Echocardiography
  • Electrocardiogram (EKG)
  • Electrophysiological Study
  • Endocarditis
  • First Degree Heart Block
  • Heart Attack (Acute Myocardial Infarction)
  • Heart Disease
  • Heart Murmur
  • Heart Palpitations
  • HeartAware Online Risk Screening
  • Hyperlipidemia
  • Hypertension
  • Hypertensive Chronic Kidney Disease
  • Hypertensive Heart and Chronic Kidney Disease
  • Hypertensive Heart Disease
  • Hypotension
  • Insertion of Left Ventricular Lead for Pacemaker or Cardioverter and-or Defibrillator
  • Limb Swelling Caused by Fluid Overload
  • Long QT Syndrome
  • Mitral Valve Disease
  • Mitral Valve Prolapse
  • Mitral Valve Regurgitation
  • Mitral Valve Stenosis
  • Mobitz, Type 2, Heart Block
  • Nuclear Stress Testing
  • Pacemaker Insertion or Replacement
  • Patent Ductus Arteriosus
  • Patent Foramen Ovale (PFO)
  • Pericardial Disease
  • Pericarditis
  • Peripartum Cardiomyopathy
  • Peripheral Arterial Disease Screening (PAD)
  • Peripheral Artery Catheterization
  • Pharmacologic Nuclear Stress Test
  • Pharmacologic Stress Test, Adenosine
  • Primary Pulmonary Hypertension
  • Prinzmetal Angina
  • Pulmonary Edema
  • Pulmonary Hypertension
  • Pulmonary Valve Disease
  • Pulmonary Venous Return Anomaly
  • Puncture Aspiration
  • Removal or Revision of Pacemaker or Cardioverter and-or Defibrillator
  • Rheumatic Aortic Valve Disorders
  • Second Degree Heart Block
  • Septal Defect
  • Sick Sinus Syndrome
  • Sinus Bradycardia
  • Sinus Tachycardia
  • Stress Test
  • Structural Heart Disease Evaluations and Treatment
  • Supraventricular Tachycardia
  • Syncope
  • TCD Bubble Test
  • Third Degree Heart Block
  • Thoracentesis
  • Tilt Table Testing
  • Tilt Testing or Cardiac Event Monitors
  • Treadmill Stress Test
  • Tricuspid Valve Disease
  • Venous Hypertension
  • Ventricular Fibrillation
  • Ventricular Septal Defect
  • Ventricular Tachycardia (VT)
  • Wolff-Parkinson-White Pattern

Insurance Check

Search for your insurance provider

Dr. Undesser accepts

Accepted insurance can change. Please double-check when making an appointment.

(208) 668-3401

Dr. Undesser accepts the following insurance:

AARP
Aetna
Choice Plus POS II
Altius Health Plans
American Republic
Amerigroup (Wellpoint)
Medicaid
Anthem
National (BlueCard) PPO
Assurant Health
Benesys
Blue Cross Blue Shield
Blue Card PPO
Blue Cross of Idaho
Blue Cross of Idaho PPO
CareFirst Blue Cross Blue Shield
HealthyBlue 2.0
HealthyBlue Advantage
CareSource
Medicaid
Cigna
Cigna PPO
Great West Healthcare-Cigna PPO
Open Access
Open Access Plus
Commercial Insurance Company
Community Health Choice
Medicaid
CoreSource
First Choice Health
First Choice Health PPO
First Health (Coventry Health Care)
First Health (Coventry Health Care) PPO
Government Employees Health Association (GEHA)
GEHA
Health Net
Medicaid
HealthPlus
Medicaid
HealthPlus Amerigroup
Medicaid
HealthSmart
Horizon Blue Cross Blue Shield of New Jersey
Medicaid
Humana
Choice Care PPO
Husky Health
Medicaid
inHealth
Medicaid
INTotal Health
Medicaid
LifeWise
Mail Handlers Benefit Plan (MHBP)
Medicaid
Midwest Health Plan
Medicaid
Moda Health
Molina Healthcare
Medicaid
MultiPlan
MultiPlan PPO
PHCS Network PPO
Mutual of Omaha
ODS Health Plan
PacificSource
Preferred PSN
Peach State Health Plan
Medicaid
Principal Life
Providence Health Plans
SelectHealth
Simply Healthcare Plans
Medicaid
Staywell (Wellcare)
Medicaid
Tricare
UnitedHealthCare
Choice Plus POS
Navigate POS
Options PPO
Wellcare of Georgia
Medicaid

About Me

Care Philosophy

Dr. Undesser is board-certified in internal medicine, cardiovascular disease and electrophysiology and has extensive research experience with several publications

Biography

This physician is accepting telehealth visits. Karl P. Undesser, MD, is a board-certified cardiac electrophysiologist who has practiced medicine in the...Read more

Specialties

  • Cardiology

Board Certifications

  • Cardiovascular Disease
  • Clinical Cardiac Electrophysiology

Education

1996
University Of California San Diego
Fellowship Hospital
1992
Duke University Med Center
Residency Hospital
1990
Duke University Hospital
Internship Hospital
1979
University Of California At San Diego
Undergraduate School
,

Awards

Frequently Asked Questions

How can I make an appointment with Dr. Karl Undesser, MD?

Call (208) 668-3403 to make an appointment as a new patient. Click here for more information.

Does Dr. Karl Undesser, MD offer telehealth services?

Dr. Undesser has indicated that they offer telehealth. Contact the office to check for eligibility for your needs.

Is Dr. Karl Undesser, MD accepting new patients?

Dr. Karl Undesser, MD generally accepts new patients on Healthgrades. You can see Dr. Undesser's profile to make an appointment.

Does Dr. Karl Undesser, MD accept my insurance?

Use the Healthgrades insurance check to verify if Dr. Undesser accepts your insurance.

What are Dr. Karl Undesser, MD's top areas of care?

Dr. Undesser frequently treats Adult Congenital Heart Conditions. See all practice areas where Dr. Undesser specializes.

Where is Dr. Karl Undesser, MD's office located?

Dr. Undesser's office is located at 745 S Progress Ave, Meridian, ID 83642. Find other locations and directions on Healthgrades.

Affiliated Hospitals

Dr. Undesser is affiliated with the following hospitals. Select a hospital below to learn more.

Learn more about how Healthgrades measuresHospital Quality.

West Valley Medical Center

Caldwell, ID

75% Patient Experience Rating, 6% higher than the national average

4 Awards Received

Award Highlight: Patient Safety Excellence Award™ (2021)

Saint Alphonsus Regional Medical Center

Boise, ID

73% Patient Experience Rating, 4% higher than the national average

3 Awards Received

St. Luke's Boise Medical Center

Boise, ID

79% Patient Experience Rating, 10% higher than the national average

19 Awards Received

Award Highlight: Patient Safety Excellence Award™ (2021)