Dr. Thoralf M. Sundt, MD | Boston, MA | Cardiothoracic Surgeon

.about .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Dr. Thoralf Sundt is a thoracic surgeon specializing in cardiovascular disease and medical genetics. He earned his medical degree from Johns Hopkins University School of Medicine and brings over four decades of clinical experience to his practice. Dr. Sundt speaks English and has dedicated his career to treating complex heart and chest conditions.

Dr. Sundt practices at Massachusetts General Hospital in Boston, Massachusetts. He treats patients with aortic valve stenosis and helps manage chronic pain related to cardiovascular conditions. His surgical expertise includes performing aortic valve replacement procedures to restore heart function in patients with valve disease. Patients rate Dr. Sundt 4.2 out of 5 stars for his care.

Overview based on verified provider data

4.2

24 Ratings
42 years of experience
speaks English
Johns Hopkins University School Of Medicine
6 written reviews
3 specialties
46 areas of expertise
1 hospital affiliation
1 office location
Male

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me

Based on patient feedback. Read the reviews

Dr. Sundt's Ratings and Reviews

4.2

24 Ratings with 6 written Reviews

Average Wait Time 9 Minutes

How was your appointment with
Dr. Sundt?

Patients’ Perspective

Gave an accurate diagnosis: (9) Did WellNeeds Improvement (1)
Had a good bedside manner: (9) Did WellNeeds Improvement (1)
Spent time with me: (9) Did WellNeeds Improvement (1)
Provided follow-up after the visit: (7) Did WellNeeds Improvement (1)
Flexible scheduling: (9) Did WellNeeds Improvement (1)
Saw me in a timely manner: No Ratings
Staff was courteous: No Ratings

24 ratings & reviews

Sort:

Showing 1 to 6 of 6 reviews

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

I am so grateful to have been in Boston at the right time and had my emergency Aortic Valve replacement performed by the best cardiac surgeon I could have ever hoped for! Not only brilliant, but kind. Thank you Dr. Sundt.

March 16th, 2020

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

My husband had a second valve replacement a year-and-a-half ago and his surgeon was Dr. Thoralf Sundt. We were truly amazed at the outcome and we owe the success to Dr. Sundt and his exceptional team. What a blessing to have this man at MGH. His kind nature and expertise was truly comforting during this stressful event. We are so very grateful to have had Dr. Sundt perform the surgery. I would definitely recommend Dr. Sundt. He is top notch and very caring.

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

July 25th, 2018

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Had open heart surgery 4 years ago to repair a mitral valve and Dr. Sundt was the best throughout the entire stay @ MGH. He assured me that he could fix it and he did so, as well as follow up to make sure all went well. No better person to handle your heart issues...amazing individual.

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

June 11th, 2018

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

If you must place your life in the hands of someone other than God. He is your man. Don't care for doctors very much. He is the exception.

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

Needs Improvement

June 27th, 2017

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

I thank his mother for having him!

Did Well

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Flexible scheduling

Needs Improvement

August 23rd, 2015

.rating-and-reviews .noScriptHide .nojs-show,.truncated [data-rem],blockquote .truncated-text{ display: initial !important}.no-js-hide,.ellipsis { display: none; }.truncated:after {content: '' !important}

Very arrogant person. Full of himself and his abilities. Does not treat others nicely. I would not recommend him to anyone. MGH is in trouble to have him as a chief.

Did Well

Needs Improvement

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me
Provided follow-up after the visit
Flexible scheduling

October 19th, 2013

Massachusetts General Hospital

55 Fruit StBoston, MA 02114

Tel: (617) 726-2000


Dr. Thoralf Mauritz Sundt III, MD	Dr. Colin Thomas Phillips, MD	Dr. David Andrew Morrow, MD	Dr. Ron Blankstein, MD
Thoracic Surgery	Cardiovascular Disease	Cardiovascular Disease	Cardiovascular Disease
	Accepts New Patients
4.2 (24 Ratings)	5 (1 Rating)	0 (0 Ratings)	5 (2 Ratings)
42 Years of Experience	15 Years of Experience	32 Years of Experience	25 Years of Experience
No Virtual Visit Option	No Virtual Visit Option	No Virtual Visit Option	No Virtual Visit Option
Speaks English	Speaks English, Russian, Spanish	Speaks English, Spanish	Speaks English, Spanish
Boston , MA	Boston , MA	Boston , MA	Boston , MA
Med School: Johns Hopkins University School Of Medicine	Med School: University Of California San Diego School Of Medicine	Med School: Harvard Medical School	Med School: Rush Medical College Of Rush University Medical Center
Current Profile	View Profile	View Profile	View Profile

Search for your insurance and plan

Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.

Dr. Thoralf Mauritz Sundt holds an active medical license in the state of Massachusetts.

Medical License

Medical Doctor with an active medical license in the state of Massachusetts that expires in 2027.

Education & Training

Medical School

Graduated from Johns Hopkins University School Of Medicine in 1984.

NPI Number

Dr. Sundt's NPI number is 1316910037.

Dr. Scott Brian Lutch, MD
Internal Medicine
42 Years Exp | Milton, MA
(20)
Dr. David Lane Barrasso, MD
Internal Medicine
52 Years Exp | Medford, MA
(4)
Dr. Timothy Michael Anderson, MD
Thoracic Surgery
44 Years Exp | Brockton, MA
(6)
Dr. James David Alderman, MD
Cardiovascular Disease
46 Years Exp | Medway, MA
(10)
Dr. R Roger Komer, MD
Cardiovascular Disease
65 Years Exp | Brookline, MA
(9)
Dr. Jeffrey Irwin Leavitt, MD
Cardiovascular Disease
40 Years Exp | Cambridge, MA
(4)
Dr. Nasser Nabi, MD
Cardiovascular Disease
61 Years Exp | Milton, MA
(4)
Dr. Rajat Mohan Gupta, MD
Cardiovascular Disease
19 Years Exp | Boston, MA
(6)
Dr. Laura Mauri, MD
Cardiovascular Disease
30 Years Exp | Boston, MA
(3)
Dr. Murray Allan Mittleman, MD
Cardiovascular Disease
41 Years Exp | Boston, MA
(1)

Which hospitals is Dr. Thoralf Sundt affiliated with?: Dr. Thoralf Sundt is affiliated with Massachusetts General Hospital.
Does Dr. Thoralf Sundt accept virtual/telehealth appointments?: Dr. Thoralf Sundt has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
How can I make an appointment with Dr. Thoralf Sundt?: You can find contact information for Dr. Thoralf Sundt here on Vitals.
Does Dr. Thoralf Sundt accept my insurance?: You can see the insurance plans that Dr. Thoralf Sundt accepts on their Vitals profile.
Where is Dr. Thoralf Sundt's office located?: Dr. Thoralf Sundt's office is located at 55 Fruit St, Boston, MA, 02114.

Our provider data is gathered directly from physicians and publicly available databases. Providers who verify their profiles gain the ability to update information, offering additional details about their specialties,education, treated conditions, performed procedures, and accepted insurances.

Reviews on Vitals are submitted by users only. Recognizing the valuable insights these reviews offer into a doctor's reputation, we maintain internal policies and protocols to ensure the quality and accuracy of all reviews. Importantly, providers cannot delete or alter reviews independently. Reviews can only be deleted or changed following an internal assessment by our customer service team.

Your feedback is highly valued and we encourage you to contact our support team should you encounter any issues.

Copyright © 2026 Vitals Consumer Services, LLC. US Patent No. 8, 694, 441. All Rights Reserved.
As more fully set forth in this website's terms of use . (1) nothing contained on or offered by or through this website should be construed as medical advice and should not be relied upon for medical diagnosis or treatment. Vitals Consumer Services, LLC ("Vitals"). the provider of this website, does not recommend or endorse any particular healthcare provider whose information or ratings appear on this website; and (2) Vitals has granted you a limited license to access and use this website for your own noncommercial use. You are not permitted to copy, reproduce, distribute, transmit, mirror, frame, scrape, extract, wrap, create derivative works of, reverse engineer, decompile or disassemble any part or aspect of this website.