About Dr. Diane Klein-Ritter

Welcome to the practice of Dr. Diane Klein-Ritter, an experienced cardiologist serving Setauket- East Setauket, New York. We are committed to providing compassionate, evidence-based cardiovascular care with a focus on prevention, early detection, and personalized treatment plans.

Medical Disclaimer: The information on this website is for general informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition.

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Patient Reviews

Patient

★★★★★

First time patient. She came highly recommended. Organized front staff and very accommodating. Doctor was timely, knowledgeable and easy to speak with. I've been to two other internists/family medicine doctors in the last ten years, and both were very much not easy to work with. I think I have finally found a family medicine doctor. My wife is looking as well and I will recommend Dr. Klein-Ritter to my wife.

Patient

★★★★★

Dr. Klein- Ritter has been my primary care physician for many years. She is a knowledgeable , caring and concerned doctor. She listens attentively and advises with clarity. I respect her opinion and have chosen to follow her guidance on many occasions. Especially during the pandemic, it is advantageous to have a physician who is available to communicate whether through a patient portal text, office visit or Telehealth appointment. It is with utmost confidence that I thank and applaud Dr. Klein-Ritter!

Patient

★★★★

patience in listening my concerns, answer my questions in details and offering necessary follow-up.

Patient

★★★★★

Extremely pleased with the care I have received from Dr Klein-Ritter as my primary care physician. Attentive to detail, spends time with me during my appointment, doesn't rush out the door. Highly recommend.

Patient

★★★★★

Dr. Klein-Ritter has been my Dr. for years. I was so impressed by her that, when different Drs. each took different insurances, I chose my new insurance based on only the ones she accepted. I recently had an issue w chest pain. I went in to see her and she checked my sugar and found it to be very high (almost 600). She told me to go to the hospital. I am a cancer survivor and previous conversations with her as well as my cancer led me to always tweak how I eat and I got to the point where I eat so healthy that I made pasta sauce from scratch without sugar and eat it over zucchini spirals instead of even whole wheat pasta. I could not believe my ears to hear my sugar was high let alone that high. I did not want to go to the hospital as I have barely left my house due to the pandemic, but bc I believe in her and I have such respect for her all the years she has been my Dr. I went to the hospital immediately. Not only was my sugar high when she took it, it was high the entire time that I was in the hospital despite my being given insulin in the hospital. What if, since I went in complaining of chest pain, she had not even taken my sugar? What if she had not told me to go directly to the hospital? What if I had not immediately gone to the hospital? Dr. Klein-Ritter will always be my Dr...for all I know she could have just saved my life.

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