alert icon Coronavirus

Now scheduling COVID-19 vaccine appointments for ages 12+
Schedule a vaccine appointment
COVID-19 vaccine FAQs

Going to a Cleveland Clinic location?
2 visitors (ages 18+) now allowed daily
Masks are required for patients and visitors (even if you're vaccinated)

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 +


Is Cleveland Clinic Part of Your Insurance?

Review a list of accepted insurance plans for our Northeast Ohio locations or learn more about purchasing a contracted managed care plan.

View All Plans

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

214 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
5 out of 5
Explains 5
Listens 4.7
Courtesy, Respect & Concern 5
Patient Rating of Doctor 5

68 Patient Comments

Reviewed on Jun 30, 2021

Dr. Mountis is excellent.

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 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

Reviewed on Oct 30, 2020

Dr. Mountis and her staff of nurses and admin assistant are great. They're very responsive to my questions and needs.

Reviewed on Oct 30, 2020

I love Dr. Mountis! She goes beyond the nuts and bolts of the physical problem and looks at the whole person. She's also very warm and caring. I'm so impressed by her that when my PCP retired I looked for a DO.

Reviewed on Oct 30, 2020

I have dealt with heart failure for over ten years and Dr Montis is by far the best I ever had! I moved to Ohio for the Cleveland Clinic not knowing what to expect and very afraid. One of my first experiences was with Dr Montis and I immediately requested her on my team. It has been the blessing I needed. They gave me my life back

Reviewed on Oct 29, 2020

The doctor ordered three or four different things that the scheduling person was supposed to do. When I got to the scheduling desk she was confused, disoriented, and distracted by other things and did not give me any clear direction. So I had to wander to the places that Dr Mountis wanted me to go.

Reviewed on Oct 27, 2020

amazing experience everytime we travel from Pittsburgh area to the Clinic! Dr Mountis and her staff are top notch. I want to commend you on having scribes for the physicians. staff in all other areas (lab, parking, etc) are so friendly and efficient. I've worked in several hospitals. I don't know how you do what you do at CC, but you are all amazing and should be proud at the type of patient-centered care and quality outcomes you offer and achieve for patients & families! Thank you.

Reviewed on Oct 27, 2020

Dr Mountis is always kind, competent, and efficient. she's an asset to CC!

Reviewed on Oct 21, 2020

Dr. Mountis always engages in excellent provision of care.

Reviewed on Oct 12, 2020

Dr Mountis and everyone I met were great! professional and courteous

Reviewed on Oct 7, 2020

Maria Mountis has been and is a good provider

Reviewed on Sep 29, 2020

Dr. Mountis takes her time and answers any questions I have.

Reviewed on Sep 18, 2020

Dr Mountis and her staff are always wonderful.

Reviewed on Sep 18, 2020

dr mountis always answers any concerns I have.

Reviewed on Sep 15, 2020

Dr. Mountis explains everything to me and if I have questions, she always takes time to answer any questions have.

Reviewed on Sep 14, 2020

Dr. Mountis always explain any changes or problems.

Reviewed on Sep 2, 2020

Dr Mountis is the greatest

Reviewed on Aug 18, 2020

I felt comfortable with the doctor and she addressed my concerns.

Reviewed on Aug 18, 2020

the doctor was very good

Reviewed on Aug 12, 2020

I love working Dr. Mountis and her entire office staff. Very professional and always helpful.

Reviewed on Aug 12, 2020

Dr Mountis very helpful as always

Reviewed on Aug 12, 2020

Dr. Maria Mountis is a very caring and excellent doctor.

Reviewed on Aug 11, 2020

Dr. Mountis is just a very thorough doctor in all she does. Very caring, compassionate and takes time if we have concerns and questions.

Reviewed on Aug 7, 2020

we are very happy with DR Mountis.

Reviewed on Aug 7, 2020

we always feel DR Mountis takes time with us to explain everything.

Reviewed on Aug 5, 2020

I found Dr Mountis to be quite personable and caring. This was my first visit with her. My local cardiologist moved out of state.

Reviewed on Jul 30, 2020

Dr. Mountis is very thorough. She reviewed with me results of my recent tests, making sure I understood what the results meant for my medical issues; reviewed my medications; answered all my questions and made treatment recommendations which I am to implement immediately. I truly enjoy my conversations with her especially the fact that she listens and hears what my concerns are and thoroughly, patiently, and, with concern for me as her patient and individual, provides high quality medical services to me. a close friend recommended Dr. Mountis to me and I am very pleased with Dr. Mountis. This was my first virtual appointment with her and it felt like she and I were having a face to face office visit. Wonderful virtual experience!

Reviewed on Jul 30, 2020

Great Staff. Great Doctor

Reviewed on Jul 30, 2020

I am very grateful to Cleveland Clinic Dr mountis truly saved my life she's an excellent doctor whom I will forever be grateful to

Reviewed on Jul 30, 2020

From the first appointment with Dr. Mountis to the present, I am very thankful to have such a caring, understanding, and warm physician taking care of my heart issues. I also greatly appreciate that she confers with my other physicians regarding my health and treatments. She is THE BEST!

Reviewed on Jul 30, 2020

Dr. Mountis and the entire team were very professional and supportive. They made me feel important and seemed genuinely concerned about creating a plan to help me.

Reviewed on Jul 28, 2020

Dr. Mountis has great empathy and communication skills.

Reviewed on Jul 13, 2020

I always have good experience With Dr. Mountis and the Cleveland Clinic.

Related Videos Featuring Maria Mountis, DO

Related Videos Featuring Maria Mountis, DO

Back to Top