Dan Sun, MD
Cardiology
Piedmont Heart of Perimeter
6115 Peachtree Dunwoody Road, Suite 300
Sandy Springs, GA 30328 Directions
4.9 out of 5
872 verified ratings
872 Ratings, 358 Comments
The following ratings and reviews are based on verified feedback collected from independently administered patient experience surveys. The ratings and comments submitted by patients reflect their own views and opinions. Patient identities are withheld to ensure confidentiality and privacy.
Nov 17, 2025
Straight to the point very welcoming and informative. I look forward in my next visit.
Nov 15, 2025
Very professional and takes time to answer any questions I have.
Oct 28, 2025
He is emphatic and was thorough. He explains well and answered my questions to my understanding and satisfaction. He also set the expectation on how long it will take to get my diagnosis well.
Oct 11, 2025
pleasant, respectable demeanor, clear questions and explanations.
Oct 10, 2025
Very good
Oct 7, 2025
Great doc.
Oct 7, 2025
Very patient, clear, and concise with future expectations stated.
Oct 7, 2025
He listens and takes his time explaining what is going on, he answers my questions and always makes me feel heard.
Sep 20, 2025
Pleasant,thorough,
Sep 19, 2025
Very caring, explains everything easy to understand no long wait
Sep 17, 2025
Very good!
Sep 17, 2025
Great Dr. Professional friendly knowledgeable. Alex the nurse was very good as well.
Sep 17, 2025
In the limited time given, he was thorough and very good. No complaints!
Sep 16, 2025
Nothing more. I am glad he is my doctor.
Sep 15, 2025
He a great doctor.
Cares about his patients.
Explained tests results thoroughly for patients to understand.
Very professional & the best
Sep 12, 2025
Dr Sun is incredible!! I knew the moment I met him I had the perfect Dr. He is so caring, and he spoke to me like I mattered. He listened to me and examined me and he came up with a plan. I am so confident in Dr Sun because he is a man of knowledge and experience. I look forward to my treatment.
Sep 12, 2025
Very kind and personable, professional.
Sep 10, 2025
I have confidence in him.
Sep 9, 2025
Great Doctor. Very caring and knowledgeable and understanding
Sep 9, 2025
He’s the best
Sep 4, 2025
Dr. Sun has a warm and friendly manner. We discussed my lab results and set personal goals. He answered any questions I had.
He was 30 minutes late for our appointment.
Sep 3, 2025
Dr. Sun is an excellent doctor. He gives clear recommendations and explains my medical challenges in simple terms. He cares about his patients.
Sep 3, 2025
Dr. Sun was very informative and has a great disposition and bedside manner.
Aug 28, 2025
I didn’t meet with Dr Sun this visit - just spoke with Renee and Scott during stress test and Stephanie during echo.
Aug 24, 2025
He was very thorough and explains everything
Aug 22, 2025
Always good to see him and he’s very thoughtful of my health.
Aug 22, 2025
He is so polite and caring and really wants to help me keep my heart healthy.
Aug 18, 2025
Dr Sun explained possible causes for my symptoms but also ordered an in-depth study of several tests to find the answers. I appreciate that he is so thorough and look forward to getting to the final answers.
Aug 18, 2025
He explains everything in detail which you can understand
Aug 7, 2025
Dr Sun treated me like was a close friend great to have a Doctor like that
Aug 7, 2025
Dr. Sun is an outstanding practitioner I am fortunate to be under his care
Aug 1, 2025
He thoroughly keeps up with what my PCP is doing and what he can do to drive growth in my knowledge as my body changes.
Jul 29, 2025
Great with all explanations
Jul 29, 2025
Very satisfied. Dr Sun is knowledgeable and a good communicator, and understands patients.
Jul 25, 2025
Very attentive and explained how we would continue with our preventative healthcare. Appreciated the time and attention he gave to me.
Jul 25, 2025
Dr Sun was very helpful and explained me in detail what was going to be done with holster monitoring and stress test
Jul 24, 2025
He takes time to listen and explain the situation thoroughly
Jul 23, 2025
He is always interested in how I feel
Jul 23, 2025
Very pleased with his addition to Piedmont.
Jul 20, 2025
Listens and Explains well
Kind good eye contact thorough
Jul 20, 2025
He is a great doctor!
Jul 16, 2025
Dr Sun is attentive, caring, knowledgeable, and the absolute best at what he does!
Jul 16, 2025
He just makes you feel comfortable and explains things in a clear and concise manner.
Jul 15, 2025
Dr Sun is a fantastic man to work with. Always ready to listen to me. Ready to answer my questions. Never in a hurry.
Jul 15, 2025
Dr.Sun appears very caring and concerned about my overall heart health.He listened to me and answered all questions I needed answered, to my satisfaction. He made recommendations to help to bring about successful results . He listened to my concerns and was very understanding of the concerns I shared with him about my past experiences with medicines,etc.
Jul 15, 2025
Excellent
Jul 14, 2025
Answered all questions.
Placed me at ease.
Jul 11, 2025
I couldn't be more pleased with the time and attention that Dr. Sun provided. He put me at ease. I feel very comfortable and confident with his care.
Jul 11, 2025
Very pleasant! Met him today, and feel like I’ve known him a long time. I’m very glad he is my cardiologist.
Jul 10, 2025
Dr Sun was very helpful.