What patients are saying
Overall rating
4.87
Average wait time
4.33
Bedside manner
4.95
“Had a great experience with Dr. D’Agate and the entire office staff. Check-in was smooth, and the front desk greeted me right away when I walked in. I only waited about five minutes after signing in before being taken back by the medical assistant.
Everyone I came in contact with was professional, well-trained, and very friendly. You can really tell the team works well together and cares about their patients.
My visit with Dr. D’Agate was excellent. Since starting my blood pressure medication, I’ve improved drastically, and he was very encouraging about maintaining that progress. He took the time to review everything and made me feel comfortable throughout the appointment.
My whole family sees Dr. D’Agate, and we’ve always had great experiences. Highly recommend this office to anyone looking for excellent cardiac care.”
Jose G.May 8, 2026
“Dr. Degate is excellent. I started seeing him over 10 years ago. He has helped encourage me to make significant changes to my lifestyle and my health. At this time I have moved to Florida but I return to NY to see Dr. Degate. I will always keep him as my cardiologist. It is well worth the trip to see him in NY.”
Kevin M.July 28, 2025
About Dr. David D'Agate
*PLEASE NOTE: We only see patients ages 15 and older!*
After earning a Master’s degree in biophysics and physiology from Georgetown University, Washington, D.C., Dr. D'Agate received his Doctor of Osteopathic Medicine degree from the New York Institute of Technology, New York College of Osteopathic Medicine. He completed his residency in internal medicine at Winthrop-University Hospital in 2002 and a fellowship in cardiovascular disease at Saint Vincent Hospital and Medical Center in New York City in 2005. Dr. D'Agate recently co-authored a book chapter and numerous publications in various areas of cardiovascular disease. His interests include atherosclerosis and diabetes/obesity, non-invasive imaging of the coronary arteries, primary and secondary prevention of atherosclerotic heart disease, and the diagnosis and treatment of peripheral vascular disease. He is one of the few cardiologists in the United States with advanced training in vascular imaging technology (R.V.T.). Dr. D'Agate is board-certified in internal medicine, cardiovascular disease, and nuclear cardiology. He currently practices as a member of Suffolk Heart Group with privileges at Southside Hospital of Bay Shore, Good Samaritan Hospital of West Islip, and St. Catherine of Siena of Smithtown, New York.
*Dr. D'Agate is accepting new patients as young as 15 years old. All patients under the age of 18 must be accompanied by a parent or guardian.*
Is this doctor in your insurance network?
Enter your insurance carrier and plan
choose insurance
In-network insurances
99% of patients have successfully booked with these insurances
Aetna
BlueCross BlueShield
Cigna
Emblem Health
Medicare
UnitedHealthcare
UnitedHealthcare Oxford
Areas of expertise
This doctor's experience enhances their expertise in similar cases. Below are the conditions or surgeries they treat most frequently.
Atrial fibrillation and atrial flutter
High cholesterol
Chronic high blood pressure
Coronary Artery Disease
Cerebrovascular disease
Cardiomyopathy
Atrial fibrillation and atrial flutter
High cholesterol
Chronic high blood pressure
Coronary Artery Disease
Office locations
1 of 2
Education and background
Practice names
Hospital affiliations
- Good Samaritan Hospital Medical Center
- Saint Catherine of Siena Medical Center
Board certifications
- Certification Board of Nuclear Cardiology
- Cardiovascular Disease (American Board of Internal Medicine)
Education and training
- Medical School - New York Institute of Technology, New York College of Osteopathic Medicine, Doctor of Osteopathic Medicine
- St. Vincent Hospital and Medical Center, Fellowship in Cardiovascular Disease
- Winthrop-University Hospital, Residency in Internal Medicine
- Georgetown University (Master’s)
- State University of New York, Binghamton (Bachelor’s)
Professional memberships
- American College of Physicians
- American College of Cardiology
- American College of Chest Physicians
- American Heart Association
Languages spoken
- English
Provider's gender
Male
NPI number
1790784395
Patient reviews
All reviews have been submitted by patients after interacting with the practice.
Overall rating
4.87
Wait time
4.33
Bedside manner
4.95
Your trust is our top concern, so providers can't pay to alter or remove reviews. We also don't publish reviews that contain any private patient health information. Learn more here
401 reviews
Most relevant
Best doctor experience. He was thoughtful, kind, listened very carefully and provided great advice/next steps.
June 28, 2025Caitlin A.Verified patient
Dr. Agate was very professional and listened well and answered all my questions! Very happy with my first visit!
April 30, 2025Richard E.Verified patient
Dr very friendly. Talked an made me feel at ease. Explained everything in detail. I would definitely recommend this Dr.
October 23, 2024Susan F.Verified patient
The doctor was cheerful, matter-of-fact, and of possessed excellent knowledge of me, and my condition I was impressed
May 25, 2023Joan B.Verified patient
I like the staffs, they were very nice and fast too. Dr. D'Agate was wonderful and he took his time to explain every detail.
February 1, 2017Antonio C.Verified patient
Dr. D'Agate was thorough and very nice. I feel comfortable with him as my doctor. Office staff were also very friendly.
March 19, 2018David B.Verified patient
My visit was quick and easy and went exactly as I anticipated it would with no surprises!
January 29, 2025Sarah M.Verified patient
Dr. D’Agate is the best. Always takes the extra time to make sure all questions are answered. Highly recommended!!
December 20, 2018Stephen M.Verified patient
Excellent bedside care. Great doctor, listened to my issues and helped me come up with a plan A+
More than 1 year agoInitials hidden
I enjoyed my first visit and staff and Dr D was very nice and very polite and caring and professional
June 9, 2023Terrance H.Verified patient
It was a really great experience, great doctor, very nice stuff, A+++
July 25, 2025Dorothy C.Verified patient
The doctor has such an amazing personality and provider of comprehension cardiac care. Highly recommend.
November 3, 2022Monique A.Verified patient
Dr. D’Agate was kind and compassionate. He listened to all my concerns. I would highly recommend him.
May 3, 2022Theresa K.Verified patient
Great! I can tell already he skilled, professional, thorough, and most importantly, wonderful person!.
April 19, 2018Linda P.Verified patient
dr dagate is number 1 in my book saved my life treats ny whole family lucky to have found him
June 1, 2023Craig A.Verified patient
He was friendly didn’t rush appointment one of the nicest doctors I’ve seen in a long time
September 19, 2023Michael S.Verified patient
He was very understanding and was determined to find out what is causing the sharp pains in my chest.
April 18, 2015Shantel S.Verified patient
Dr dagata bedside manner is amazing! Spent half hour with us. He is def worth the wait.
January 19, 2023Thomas B.Verified patient
Dr D’Agate has been my cardiologist for about 20 years. He’s kind and compassionate.
July 17, 2023Susan M.Verified patient
he was awesome very through happy dot do the tests he recommended and booked all the appts
July 25, 2018Ruth H.Verified patient
He is one of my fb doctors, he calms me down , only gives me hope and makes me feel better .
More than 1 year agoLorena R.Verified patient
He was very professional, very personable and very knowledgeable. Would highly recommend.
January 4, 2021John W.Verified patient
Very knowledgeable, listened to my concerns and came up with a plan. Highly recommend!
May 2, 2022Lee S.Verified patient
It was my first visit with Dr D’Agate and I thought he was very intelligent and helpful.
June 18, 2020Mark G.Verified patient
He's a wonderful devoted doctor who is dedicated to his patients. Getting the best care
More than 1 year agoEileen B.Verified patient
Caring, friendly, knowledgeable, willing to go the extra mile to achieve success!
October 10, 2022John L.Verified patient
Dr D is the best great staff and he's a really great person and Dr
April 30, 2024Terrance H.Verified patient
Great consult- very informative and put my mind at ease. Would highly recommend!
June 5, 2018Hope C.Verified patient
Very professional staff. Prompt check in. Dr was thorough and honest. I'm fat.
More than 1 year agoBrian M.Verified patient
The doctor and staff were friendly and the appointment was easy to make
August 1, 2022John E.Verified patient
Fast easy efficient both in office and registering on line love Dr D ??
July 29, 2022Laura M.Verified patient
My visit went well. I felt that it was a little rushed as they were busy.
December 10, 2020Initials hidden
Wonderful!!! professional, highly recommended !!!
October 8, 2024Linda P.Verified patient
He is very thorough and I didn’t feel rushed when I was asking questions.
March 3, 2021Christina L.Verified patient
He had a great way of easing this very very nervous
Patient. Thank you!!
April 15, 2019Peter K.Verified patient
Dr. D’Agate was awesome. Very thorough, made you feel comfortable .
More than 1 year agoInitials hidden
Dr. is professional & polite, and the staff is also very friendly.
March 9, 2017John G.Verified patient
He was great! Made me feel comfortable and I did not feel rushed!
February 8, 2019Melissa B.Verified patient
Great doctor very thorough great personality highly recommend him
January 5, 2017Initials hidden
The entire office and Doctor were very helpful and professional
More than 1 year agoInitials hidden
Very friendly and knowledgeable. I would definitely recommend.
More than 1 year agoSteven P.Verified patient
I think under these COVID circumstances the visit was great.
More than 1 year agoMichele G.Verified patient
He is very nice and understanding doctor he's great thanks
May 5, 2017Craig C.Verified patient
They were pleasant, accommadating and made me comfortable!
January 22, 2016Jessica S.Verified patient
Very nice doctor very informative would highly recommend
March 12, 2016Chris G.Verified patient
Seems to be very knowledgeable and patient sensitive.
October 5, 2020Robert N.Verified patient
Looking forward to having him as my new cardiologist
February 8, 2019Laura M.Verified patient
Had a great experience with Dr. D’Agate and the entire office staff. Check-in was smooth, and the front desk greeted me right away when I walked in. I only waited about five minutes after signing in before being taken back by the medical assistant.
Everyone I came in contact with was professional, well-trained, and very friendly. You can really tell the team works well together and cares about their patients.
My visit with Dr. D’Agate was excellent. Since starting my blood pressure medication, I’ve improved drastically, and he was very encouraging about maintaining that progress. He took the time to review everything and made me feel comfortable throughout the appointment.
My whole family sees Dr. D’Agate, and we’ve always had great experiences. Highly recommend this office to anyone looking for excellent cardiac care.
May 8, 2026Jose G.Verified patient
My doctor is/was very helpful with what he does
September 27, 2025Susan M.Verified patient
Dr. Degate is excellent. I started seeing him over 10 years ago. He has helped encourage me to make significant changes to my lifestyle and my health. At this time I have moved to Florida but I return to NY to see Dr. Degate. I will always keep him as my cardiologist. It is well worth the trip to see him in NY.
July 28, 2025Kevin M.Verified patient
Loading...
How soon can I make an appointment with Dr. David D'Agate?
Generally, Dr. David D'Agate has appointments available on Zocdoc within 1 week. You can see Dr. D'Agate's earliest availability on Zocdoc and make an appointment online.
Is Dr. David D'Agate accepting new patients?
Dr. David D'Agate generally accepts new patients on Zocdoc. You can see Dr. D'Agate's earliest availability on Zocdoc and schedule an appointment online.
Does Dr. David D'Agate accept my insurance?
Choose your insurance plan to verify if Dr. D'Agate is in-network.
Can I make an appointment with Dr. David D'Agate online?
Yes, you can make an appointment online with Dr. D'Agate using Zocdoc. It’s simple, secure, and free.
Which hospital is Dr. David D'Agate affiliated with?
Dr. David D'Agate is affiliated with Good Samaritan Hospital Medical Center and Saint Catherine of Siena Medical Center.
What practice does Dr. David D'Agate work with?
Dr. David D'Agate works with Suffolk Heart Group.
Where is Dr. David D'Agate's office located?
Dr. David D'Agate has 2 office locations, including in Smithtown and Bay Shore, view full addresses on Dr. D'Agate's profile.
Which board certifications does Dr. David D'Agate have?
Dr. David D'Agate is certified by Certification Board of Nuclear Cardiology and Cardiovascular Disease (American Board of Internal Medicine).
What are common reasons for patients to see Dr. David D'Agate?
Dr. David D'Agate frequently sees patients for Cardiology Consultation , Cardiology Follow Up , Chest Pain, High Blood Pressure / Hypertension, and New Patient Visit. You can see other visit reasons for Dr. David D'Agate on their profile.
What languages does Dr. David D'Agate speak?
Dr. David D'Agate speaks English.
How do patients rate Dr. David D'Agate in reviews?
401 patients have reviewed Dr. David D'Agate. The overall rating for this doctor is 4.87/5. They have a 4.95/5 rating for bedside manner and a 4.33/5 rating for wait time. You can read individual reviews and ratings on their profile.