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Department Cardiovascular Medicine
Primary Location Cleveland Clinic Main Campus
Type of Doctor Adults Only
Languages English, Greek
Surgeon No
Cleveland Clinic Main Campus
Primary Location

Cleveland Clinic Main Campus


Additional Locations

Specialties & Treatments

Treatment & Services

  • cardiac transplant
  • Cardiac Transplantation
  • Cardiology
  • Cardiovascular Medicine
  • Cardiovascular Medicine Department
  • Endomyocardial Biopsy
  • George M & Linda H Kaufman Center for Heart Failure
  • Heart Biopsy
  • Heart Failure Management
  • Heart Failure Section
  • Heart Failure Surgery
  • Heart Transplantation
  • Mechanical Assist Devices
  • Pre-Transplant Evaluation
  • Transplant
  • Ventricular Assist Device
View all 16 Treatment & Services +

Specialty in Diseases & Conditions

  • Amyloid Sarcoid Heart Disease
  • Amyloidosis
  • Cancer and the Heart
  • Cardiac Amyloid Imaging
  • Cardiac transplant
  • Cardiomyopathy
  • Cardiomyopathy Secondary to Chemotherapy
  • Cardiomyopathy Valvular
  • Cardiovascular Disease in Women
  • Congestive Heart Failure (CHF)
  • Dilated Cardiomyopathy
  • Ejection Fraction
  • Ejection Fraction - Abnormal
  • Enlarged Heart
  • Familial Amyloidosis
  • Familial Cardiomyopathy
  • Heart Disease
  • Heart Disease - Women
  • Heart Disease & Pregnancy
  • Heart Failure
  • Heart Failure In Women
  • Hypertrophic Cardiomyopathy
  • Infiltrative Cardiomyopathy
  • Ischemic Cardiomyopathy
  • Mechanical Circulatory Support
  • Myocarditis
  • Nonischemic Cardiomyopathy
  • Pulmonary Hypertension
  • Restrictive Cardiomyopathy
  • Sarcoid Heart Disease
  • Shortness Of Breath
View all 31 Specialties +


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About Maria Mountis, DO

Dr. Maria Mountis is Staff in the Division of Cardiology, Section of Heart Failure and Transplantation.  She was appointed to the Cleveland Clinic in 2008.   She is board certified in Internal Medicine, Cardiology, and Advanced Heart Failure and Transplant  by the American Board of Internal Medicine. She is also certified in adult echocardiography by the National Board of Echocardiography.

In addition to office visits, Dr. Mountis also offers scheduled pre-visits and  follow up virtual visits to select patients, through the Cleveland Clinic Express Care ® Online app. This platform allows patients to see their physician live, using their smartphone, tablet or computer.

Specialty Interests:  Diagnosis and treatment of advanced heart failure, cardiac transplantation, mechanical assist devices, pulmonary hypertension, and the cardiac care of women.

Success Rates: Cleveland Clinic has been ranked the #1 hospital for cardiology and heart surgery by U.S. News & World Report since 1994. Success rates for specific procedures are available at:

Education and Training: Dr. Mountis is a Pennsylvania native, graduating with a B.S. degree in Biology from Saint Joseph's University, Philadelphia, PA. She received her medical degree from the Philadelphia College of Osteopathic Medicine and completed her internship and residency in Internal Medicine at Lehigh Valley Hospital and Health Network in Allentown, PA. This was followed by her fellowship in Cardiovascular Medicine at Albert Einstein Medical Center in Philadelphia, PA, where she was also appointed Chief Cardiovascular Fellow. She continued her training at the Hospital of the University of Pennsylvania with a fellowship dedicated to the care of patients with Advanced Heart Failure and Cardiac Transplant.

Education & Professional Highlights

Education & Professional Highlights


Education & Fellowships

Fellowship - Hospital of The University of Pennsylvania
Heart Failure/Transplant
Philadelphia, PA USA

Fellowship - Albert Einstein Medical Center
Philadelphia, PA USA

Residency - Lehigh Valley Hospital
Internal Medicine
Allentown, PA USA

Internship - Lehigh Valley Hospital
Internal Medicine
Allentown, PA USA

Medical Education - Philadelphia College of Osteopathic Medicine
Philadelphia, PA USA

Undergraduate - Saint Joseph's University
Philadelphia, PA USA


  • Internal Medicine - Advanced Heart Failure and Transplant Cardiology

Specialty Interests

Cardiomyopathy, cardiac tumors, heart failure, heart transplantation, ventricular assist device, myocardial biopsy, cardiac catheterization, heart failure in women, pulmonary hypertension

Awards & Honors

  • American Heart Association, Women in Cardiology Trainee Award for Excellence
  • Chief Cardiovascular Fellow, Albert Einstein Medical Center
  • Fellow, American College of Cardiology
Research & Publications

Research & Publications

See publications for Maria Mountis, DO.

(Disclaimer: This search is powered by PubMed, a service of the U.S. National Library of Medicine. PubMed is a third-party website with no affiliation with Cleveland Clinic.)

Industry Relationships

Industry Relationships

Cleveland Clinic physicians and scientists may collaborate with the pharmaceutical or medical device industries to help develop medical breakthroughs or provide medical expertise or education. Cleveland Clinic strives to make scientific advances that will benefit patient care and support outside relationships that promise public benefit. In order for the discoveries of Cleveland Clinic physicians' and scientists' laboratories and investigations to benefit the public, these discoveries must be commercialized in partnership with industry. As experts in their fields, Cleveland Clinic physicians and scientists are often sought after by industry to consult, provide expertise and education.

To assure professional and commercial integrity in such matters, Cleveland Clinic maintains a program that reviews these collaborations and, when appropriate, puts measures in place to minimize bias that may result from ties to industry. Cleveland Clinic publicly discloses the names of companies when (i) its physicians/scientists receive $5,000 or more per year (or, in rare cases, equity or stock options) for speaking and consulting, (ii) its physicians/scientists serve as a fiduciary, (iii) its physicians/scientists receive or have the right to receive royalties or (iv) its physicians/ scientists hold any equity interest for the physician's/scientist's role as inventor, discoverer, developer, founder or consultant.* In publicly disclosing this information, Cleveland Clinic tries to provide information as accurately as possible about its physicians' and scientists' connections with industry.

As of 6/14/2021, Dr. Mountis has reported no financial relationship with industry that is applicable to this listing. In general, patients should feel free to contact their doctor about any of the relationships and how the relationships are overseen by Cleveland Clinic. To learn more about Cleveland Clinic's policies on collaborations with industry and innovation management, go to our Integrity in Innovation page.

Public Health Service-Reportable Financial Conflicts of Interest. Cleveland Clinic scientists and physicians engage in basic, translational and clinical research activities, working to solve health problems, enhance patient care and improve quality of life for patients. Interactions with industry are essential to bringing the researchers' discoveries to the public, but can present the potential for conflicts of interest related to their research activities. Click here to view a listing of instances where Cleveland Clinic has identified a Public Health Service (PHS)-Reportable Financial Conflict of Interest and has put measures in place to ensure that, to the extent possible, the design, conduct and reporting of the research is free from bias.

* Cleveland Clinic physicians and scientists subscribe to the guidance presented in the PhRMA Code on Interactions with Healthcare Professionals and the AdvaMed Code of Ethics on Interactions with Health Care Professionals. As such, gifts of substantial value are generally prohibited.

Patient Satisfaction Reviews

198 Patient Satisfaction Reviews

The Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our nationally-recognized Press Ganey Patient Satisfaction Survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.

Responses are measured on a scale of 1 to 5 with 5 being the best score.

The comments are submitted by patients and reflect their views and opinions. The comments are not endorsed by and do not necessarily reflect the views of Cleveland Clinic.

Overall Star Ratings
4.9 out of 5
Explains 4.9
Listens 4.6
Courtesy, Respect & Concern 4.9
Patient Rating of Doctor 5

65 Patient Comments

Reviewed on Oct 29, 2021

I was so please to know my problem could be fixed and Dr Mountis had a plan for me.

Reviewed on Oct 21, 2021

Forever grateful to doctor Maria Mount

Reviewed on Oct 20, 2021

You need an additional rating of "6" for Superior which is the quality of care I always receive from Dr. Mountis and her team

Reviewed on Oct 18, 2021

Dr Mountis sat down talked to me. Looked at me. Showed me things my original drs had not. Explained tjings and meds and why I was talking them. Adjusted my med to help me! Hugged me when we were done. 2 hours from her day. She cares!!!!!!

Reviewed on Oct 18, 2021

Dr. Mountis is wonderful - clear, precise, compassionate - everything one would wish for in a doctor

Reviewed on Oct 7, 2021

Dr. Mountis is always very caring and positive.

Reviewed on Oct 5, 2021

Dr. Maria Mountis is an absolutely wonderful doctor. She takes the time with you and is very personable, considerate and caring.

Reviewed on Oct 4, 2021

Dr. Mountis was thorough and caring.

Reviewed on Sep 17, 2021

My answer to ALL the questions above would be excellent. That includes all the staff that took care of me and especially Dr. Mountis. I do recommend Cleveland Clinic to everyone who will listen, regardless of their problem. I am certain CC offers the best care no matter "what ails you"!!

Reviewed on Sep 16, 2021

Dr. Maria Mountis Is Incredibly professional, carrying and attentive.

Reviewed on Sep 16, 2021

Dr Mounties is excellent in every area

Reviewed on Sep 15, 2021

Dr Mountis reviewed my case by email during the days leading up to my appointment. She asked important questions by email in advance of my surgery. She was wonderful during my in person appointment, spending as much time as we needed to answer all of our questions.

Reviewed on Sep 14, 2021


Reviewed on Sep 14, 2021

I feel comfortable with Dr. Mounties she very intelligent and caring. I would recommend her to anybody.

Reviewed on Sep 8, 2021

Dr.Mountis is the best heart doctor she keep me on he right track and answer all my question and make sure my medication is working.

Reviewed on Sep 1, 2021

I'm very grateful for and to Dr mountiss far as I'm concerned she is family to me she from day has been honest with me and was very concerned for health

Reviewed on Aug 17, 2021

We had an excellent visit with Dr. Mounting and the staff at CC

Reviewed on Aug 13, 2021

I've had questions over the past month and really appreciated the speed that Dr. Mountis's office got back to me.

Reviewed on Aug 13, 2021

Dr. Mountis has always taken such good care in addressing any concerns I may have. I feel fortunate to have found such a caring doctor to handle my CHF.

Reviewed on Aug 13, 2021

Every department, the lab, x-ray, ekg, echo, and Dr. Mountis have always handled me in an efficient and professional manner.

Reviewed on Aug 11, 2021

Dr Mountis is the smartest and best doctor ever

Reviewed on Aug 11, 2021

All the time recommend Dr Mountis

Reviewed on Aug 11, 2021

Dr Mountis was only dr who indicated concern for pacemaker on ventricular chambers on heart.

Reviewed on Aug 9, 2021

Dr. Mountis is exceptional, very intelligent, willing to listen and share her knowledge.

Reviewed on Aug 5, 2021

Great doctors.

Reviewed on Jul 27, 2021

The care I receive at Cleveland Clinic is fantastic ! I think all staff is very curtious. Dr Mountis is wonderful , caring s d extremely knowledgeable ! I am thankful for a hospital like this in my home state

Reviewed on Jun 30, 2021

Dr. Mountis is excellent.

Reviewed on Jun 29, 2021

Dr.Mountis always so nice and professional. Explains everything and is very patient

Reviewed on Jun 25, 2021

An excellent, obviously very caring very knowledgeable physician who went out of her way accommodate my wife and me during my visit.

Reviewed on Jun 23, 2021

I had a lot of different providers because of the many tests that I had that day. They were all great.

Reviewed on May 28, 2021

Dr Mountis is the best!!

Reviewed on May 27, 2021

I have truly only had great experiences here! I love all of my medical providers and feel they go above and beyond to give me the utmost care.

Reviewed on May 27, 2021

If I met Dr. Mountis three years ago, I believe through her skills I would not be as sick as I am. She was very thorough.

Reviewed on May 24, 2021

Dr. Mountis has been a trusted care provider since my one-month stay at the CC dealing with my congestive heart failure. She is the best.

Reviewed on May 24, 2021

I absolutely love my doctor and I don't say this lightly but doctor Montes is the best doctor I have ever seen in my entire life just a fantastic doctor all around and I believe that she really saved my life I will forever be grateful

Reviewed on May 21, 2021

I have recommended Dr. Mountis to someone who scheduled with her.

Reviewed on May 17, 2021

Dr. Maria Mountis is an exceptional doctor. She takes the time to go over everything and give you plenty opportunity to ask any questions.

Reviewed on May 17, 2021

Dr. Mountis is absolutely amazing. Great listening abilities (aided by a medical stenographer who freed her to remain focused on us), and great skill at giving explanation of complicated issues. We are thrilled to have her engaged with us in this sometimes scary and somet8mes confusing journey.

Reviewed on Apr 29, 2021

Dr. Mountis has been my doctor for 10 + years. She told me she'd take care of me and I have the utmost confidence in her

Reviewed on Apr 29, 2021

Dr. Mountis always takes the time necessary to listen and come up with solutions to help .

Reviewed on Apr 16, 2021

I have multiple family members seeing Dr. Mountis, and we all think she is great! Dr. Mountis is very knowledgeable and thorough. She explains things well and does not mind addressing your questions or concerns. She is also a very genuine and caring person, and we are very blessed to have her!

Reviewed on Apr 16, 2021


Reviewed on Apr 16, 2021

Dr. Mountis is wonderful. I think she is very knowledgeable and I feel that I am in good hands. Her personality is exceptional, as she is very caring, friendly, and easy to talk to. I am very blessed to have her!

Reviewed on Mar 26, 2021

always a good experience with dr. Mountis

Reviewed on Mar 19, 2021

Dr Mountis is an excellent physician,who without her care I would not be alive today.I do not hesitate to give her my highest praise and respect.As a physician I have interacted with many doctors in last 35 years.Dr Mountis is easily on of the best.

Reviewed on Mar 16, 2021

Dr. Mountis is very good at assessing and caring for my physical health, but she also is willing to go beyond and talk about "life" and how things are going. how's your family. etc. I really appreciate that.

Reviewed on Mar 11, 2021

I have had appointments with Dr Mountis for over 2 years She is excellant

Reviewed on Mar 11, 2021

Dr Mountis is a great and caring doctor.

Reviewed on Mar 11, 2021

Very happy with Dr. Mountis as my doctor.

Reviewed on Mar 10, 2021

Dr. Mountis is very personable, comprehensive in the care she provides to me, and involves me in my care. She reviews medical tests with me and compares them to past tests for a better analysis of my wellness status. I greatly appreciate the fac5 that she listens to me, does not rush our appointment and always ask if I have any questions or other concerns.

Reviewed on Mar 9, 2021

Dr. Montis is a very caring and attentive physician. I feel very satisfied and trust her completely with my care.

Reviewed on Mar 5, 2021

Dr Mountis is a very caring and thorough doctor.

Reviewed on Feb 25, 2021

Dr. Mountis, is one of the best Cardiologist at the Cleveland Clinic. She takes her time explaining my test, giving me advice about my health and trying to make sure she answers each one of my questions I may have. Dr. Mountis has referred me to physicians who can help me with problems she doesn't specialize in and she always followed up with me to make sure everything went well.Dr. Mountis bedside manner is A1, she's an awesome physician.

Reviewed on Feb 22, 2021

I adore Dr. Mountis! She is so good at communicating clearly, providing information that's easily understandable, and it's clear that she genuinely cares.

Reviewed on Feb 9, 2021

Dr Mountis deserves an A++ for her attention to patient care. professional detail and genuine care for my welfare.

Reviewed on Feb 9, 2021

Doctor Mountis is the best of explaining and listening, she takes her time and is very understanding!!!

Reviewed on Feb 8, 2021

Dr .Mounties goes above and beyond.

Reviewed on Feb 3, 2021

I can't stop raving about my doctor and the clinic in general. top notch, world class place.

Reviewed on Feb 3, 2021

doctor coordinated all my appointments for the following day to accommodate my travel schedule.

Reviewed on Feb 2, 2021

Dr Mountis is by far the best cardiologist I have seen since being diagnosed in 2019. She includes the patient in her decisions concerning their health instead of using a one size fit all approach.

Reviewed on Jan 20, 2021

Dr. Mountis was very patient, kind, and thorough.

Reviewed on Jan 12, 2021

After finally meeting with Dr. Mountis, I was highly satisfied. She was very knowledgeable, explained things to me. Spent nearly an hour with me and my husband. Had wonderful suggestions and I will be transferring my care to her from St. Vincent Hospital in Erie, PA.

Reviewed on Dec 23, 2020

Best Doctor I have ever known,,,,She is teh very best,,,Knowledgable, caring....I could brag on her forever///

Reviewed on Dec 23, 2020

THE VERY BEST!!!! Honestly never knew a better Doctor. Knowledge, skill, care and personality it just cant get any better. She is a life saver....

Reviewed on Nov 11, 2020

i'm extremely happy with my doctors .I am also very impressed with the clinic they live up to the reputation. Sincerely

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