
Theofanis Tsiamtsiouris, MD
CardiologyInterventional Cardiology
Highlights
Languages
- Greek
- English
Gender
MaleLocations
- Interventional Cardiology, East Hills Suite 102C
- 2200 Northern Boulevard, Suite 102, Greenvale, NY 11548
- Get Directions
- phone: 516-390-9640
- fax: 516-390-9650
- Interventional Cardiology, Fresh Meadows
- 16303 Horace Harding Expressway, Suite S100, Fresh Meadows, NY 11365
- Get Directions
- phone: 718-454-4600
- fax: 718-454-3954
Expertise
Education
- Fellowship: New York University, Interventional Cardiology, 2001
- Fellowship: New York University, Cardiology, 1999
- Residency: New York University, Internal Medicine, 1997
- Medical School: Sch. of Med. SUNY at Stony Brook, 1993
Insurance
- Aetna
- Aetna Medicare PPO
- Agewell
- Agewell Medicare
- American Plan Administrators PPO
- Anthem
- Anthem Essential Plan 1 & 2
- Anthem Medicare
- Beechstreet
- Blue Cross Mcd Hmo
- Cigna
- Cigna Medicare
- Coventry Health Care
- Emblem
- Emblem HIP
- Emblem Medicaid
- Emblem Medicare
- Fidelis
- Fidelis Health Exchange
- Fidelis Medicaid
- Fidelis Medicare
- First Health
- GHI
- GHI CBP NY City Employee
- GHI CBP PPO EPO
- GHI HMO
- GHI Medicare Choice PPO/Value Options
- GHI NYS NYC Value Options
- GHI PPO EPO
- HCP Child Health Plus
- Health First
- HEALTH FIRST EP 3&4
- Health First Medicaid
- Health First Medicaid HARP EP 3&4
- Health First Medicare
- HEALTH FIRST RISK EP 3&4 ALT
- Health First Risk Medicaid HARP EP 3&4 Alternate Plan
- Healthsmart Benefit Solutions
- HIP
- HIP Child Health Plus
- HIP Hcare Partners Essent Pl 1&2
- HIP Hcare Partners Essential 3&4
- HIP Hcare Partners HMO
- HIP Hcare Partners Medicaid
- HIP Hcare Partners Medicare HMO
- HIP Hlth Essential Pl 1 & 2
- HIP Hlth Essential Pl 3&4
- HIP HMO POS
- HIP Medicaid
- HIP Medicare HMO
- HIP Medicare PPO
- HIP NY City HMO
- HIP PPO EPO
- HIP Somos Child Health Plus
- HIP Somos Essential Plan 1&2
- HIP Somos Essential Plan 3&4
- HIP Somos Medicaid/HARP
- Humana
- Humana Medicare
- Local
- Local 1 Bricklayers Magnacare
- Local 1102 Magna
- Local 1199 Emp SJH SEIU
- Local 1199 National Benefit Fund
- Local 1205
- Local 1298 Magna
- Local 138 Operating Engineers Magna
- Local 1500
- Local 1964
- Local 210 Retiree Grp Magna
- Local 210 Unity Welfare Fund
- Local 25 Ibew Magna
- Local 272 Welfare Fund Magna
- Local 29 Blasters & Drillers & Minors
- Local 3 Magna
- Local 30 Trust Fund Engineers Magna
- Local 338 Magna
- Local 342 50 Magna
- Local 342 Insurance Trust Magna
- Local 361 Magna Care
- Local 381 Magna
- Local 40 Iron Workers
- Local 463 Health Fund
- Local 522
- Local 66 Magna
- Local 6A Cement And Concrete
- Local 802 Musicians
- Local 803 Ibt Health And Welfare Fund Inc.
- Local 804
- Local 806 Bridge Painters - Alicare
- Local 810
- Local 810 Union Wire Metal
- Local 812 Magna
- Local 888 Magna
- Magna Direct Plus
- Magna Preferred PPO
- Meritain Health
- Meritain Health Aetna PPO
- Multiplan
- Optum Health/Blue Cross
- Oscar
- Oscar Health Exchange
- Oxford
- Oxford Bh
- Oxford Medicare
- Partners Health Plan
- Partners Health Plan Medicare
- Secure Horizon Mcr Complete PPO
- Sunrise
- Three Rivers
- Three Rivers Provider Network
- Tricare Champus
- UMR
- UMR UHC Salt Lake City
- United HC Choice Plus POS
- United HC Community Child Health Plus
- United HC Community Medicaid
- United HC Essential Pl 1 & 2
- United HC Essential Pl 3&4
- United HC Exchange
- United HC HMO POS
- United HC Medicare HMO
- United HC Medicare PPO
- United HC Narrow Network
- United Hc Nexus ACO R
- United HC NexusACO OA
- United HC PPO
- United HC PPO Empire Plan
- United HC PPO EPO Indemnity
- United HC Speech
- United Health Plus PPO
- United Healthcare
- United Healthcare Medicaid
- United Healthcare Medicare
- United Healthcare Mpn
- VNS Choice
- Vns Choice Medicare Replacement
- Wellcare
- Wellcare Medicaid
- Wellcare Medicare
Ratings & Reviews
5 out of 5
651 ratings, 106 reviewsThe Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.
- 5 out of 5 starsReviewed on 1/30/2026
I've seen Dr. Theo many years. I have always liked and valued his diagnosis and care.
- 5 out of 5 starsReviewed on 1/26/2026
Dr. Theo always concerned and helpful for many years. Have recommended him to many friends and relatives.
- 5 out of 5 starsReviewed on 1/23/2026
Dr Theofanis Tsiamtsiouris is a very professional doctor. He is kind friendly helpful caring and make you feel at home. So blessed to have him as my doctor!
- 5 out of 5 starsReviewed on 1/22/2026
Dr Theo is a total professional
- 5 out of 5 starsReviewed on 1/18/2026
Dr. Theo is tops in his Field. He is professional. He explains everything he make sure that you as a patient understands everything. If he needs to get back to you on a test result or another issue it is always done and it's timely manner where you're not waiting days for an answer. In my opinion he is absolutely one of the best physicians ever.
- 5 out of 5 starsReviewed on 1/16/2026
Dr Theo Is very thorough and easy to talk to
- 5 out of 5 starsReviewed on 1/15/2026
Dr Theo is one of the very best doctors I have ever had. He saved my life.
- 5 out of 5 starsReviewed on 1/14/2026
Dr Theo was very informative
- 5 out of 5 starsReviewed on 1/14/2026
Dr Theo is great!
- 5 out of 5 starsReviewed on 1/8/2026
Again everyone was excellent
- 5 out of 5 starsReviewed on 12/24/2025
Always a good experience when you see Dr Theo
- 5 out of 5 starsReviewed on 12/23/2025
Love Dr Theo- best cardiologist ever
- 5 out of 5 starsReviewed on 12/21/2025
Dr. Theo is excellent. Knowledgeable, listens, generates solutions. Calm manner, as well.
- 5 out of 5 starsReviewed on 12/20/2025
Dr. Theo is great!
- 5 out of 5 starsReviewed on 12/19/2025
He's the BEST!!!!!!
- 5 out of 5 starsReviewed on 12/15/2025
Love Dr. Theo!
- 5 out of 5 starsReviewed on 12/14/2025
Dr Theo is beyond amazing! He is extremely compassionate listens talks and is not worrisome. He is one in a million!!
- 5 out of 5 starsReviewed on 12/10/2025
Dr Theo is wonderful!
- 5 out of 5 starsReviewed on 12/7/2025
Dr. Theo is kind ,considerate and v excellent physician. Using him many years and have strongly recommended him to so many[...]
- 5 out of 5 starsReviewed on 12/7/2025
Excellent experience all around.
- 5 out of 5 starsReviewed on 12/4/2025
Great
- 5 out of 5 starsReviewed on 12/4/2025
I would recommend Dr. Theofanis Tsiamtsiouris whoever needs a doctor cardiologist.
- 5 out of 5 starsReviewed on 12/4/2025
I have been seeing Dr. Theo for yrs. He is the best!! I recommend him to everyone and will continue to!
- 5 out of 5 starsReviewed on 12/3/2025
Dr. Theo gave me a thorough examination and I've seen many cardiologists having a long history of heart disease
- 5 out of 5 starsReviewed on 12/2/2025
[...]No worries. He answered all my questions.
- 5 out of 5 starsReviewed on 11/27/2025
Absolutely exceptional
- 5 out of 5 starsReviewed on 11/27/2025
Always pleased with the provider showing much concern & carrying for me.
- 5 out of 5 starsReviewed on 11/27/2025
He's a great doctor I recommend him to everyone I speak to who has a condition. He's caring and professional.
- 5 out of 5 starsReviewed on 11/21/2025
Very happy!
- 5 out of 5 starsReviewed on 11/21/2025
Already recommended to my brother and sister-in-law and a friend. Very happy with his care.
- 5 out of 5 starsReviewed on 11/16/2025
Can't say enough good things about Dr. Theo.
- 5 out of 5 starsReviewed on 11/16/2025
Explaining good
- 5 out of 5 starsReviewed on 11/13/2025
Very good
- 5 out of 5 starsReviewed on 11/9/2025
My provider is consistently excellent and provides exceptional medical care.
- 5 out of 5 starsReviewed on 11/4/2025
Dr Theo is the best
- 5 out of 5 starsReviewed on 11/4/2025
Going to Dr Theo for years and he is always so knowledgeable, personable, accommodating.
- 5 out of 5 starsReviewed on 11/2/2025
I have highly recommended Dr. Theo to many and have the utmost confidence in his knowledge and admire his compassion and attentiveness.
- 5 out of 5 starsReviewed on 10/31/2025
Dr Theo is great
- 5 out of 5 starsReviewed on 10/30/2025
Dr. Theo is a very smart, caring, relatable and empathetic cardiologist who is thorough during exams and Is diligent with follow-ups. He is very reassuring and I trust him implicitly.
- 5 out of 5 starsReviewed on 10/26/2025
Been receiving care by this DR for many years an am very satisfied with his attention to my needs or I wouldnt return
- 5 out of 5 starsReviewed on 10/25/2025
Dr Theo is top notch.
- 5 out of 5 starsReviewed on 10/23/2025
Dr. Theo is the best cardiologist I have ever seen.
- 5 out of 5 starsReviewed on 10/22/2025
Wonderful dr and staff
- 5 out of 5 starsReviewed on 10/14/2025
Excellent care
- 5 out of 5 starsReviewed on 10/13/2025
As always, Dr. Theo and his staff were very professional, caring and on top of everything.
- 5 out of 5 starsReviewed on 10/8/2025
Great dr and staff
- 5 out of 5 starsReviewed on 10/8/2025
Dr. Theo is always excellent
- 5 out of 5 starsReviewed on 10/5/2025
Dr. Theo is always extremely thorough, professional, and attentive to all of our needs.
- 5 out of 5 starsReviewed on 10/3/2025
Dr. Theo is always at his best.
- 5 out of 5 starsReviewed on 10/2/2025
Dr Tsiamtsiouris is a wonderful doctor. He is professional, thorough and addresses all my concerns and questions.There's not too many doctors I trust, but I trust and respect his advice and guidance.
- 5 out of 5 starsReviewed on 10/1/2025
Dr. Theo showed me a lot of professionalism!And knowledge.
- 5 out of 5 starsReviewed on 9/28/2025
Dr. Theo is the best!
- 5 out of 5 starsReviewed on 9/24/2025
Dr. Theo is a professional very caring medical doctor. It is a pleasure having him as my cardiologist. Absolutely a wonderful man and a true professional in the medical field. I thank him every time I see him.
- 5 out of 5 starsReviewed on 9/21/2025
Very happy
- 5 out of 5 starsReviewed on 9/21/2025
Doctor was very good and helpful always
- 5 out of 5 starsReviewed on 9/19/2025
Best Dr I have
- 5 out of 5 starsReviewed on 9/17/2025
Dr Theo is a very concerned Dr always ask questions and he has the answers to your questions
- 5 out of 5 starsReviewed on 9/13/2025
Spoke about the current medications I currently take. To coordinate with my issue
- 5 out of 5 starsReviewed on 9/5/2025
All good
- 5 out of 5 starsReviewed on 8/30/2025
Dr. Theo is a wonderful cardiologist but also a wonderful person!
- 5 out of 5 starsReviewed on 8/27/2025
Dr Theo is calming giving you all information about the condition. He shares his thought and concerns in managing your care
- 5 out of 5 starsReviewed on 8/25/2025
Good.
- 5 out of 5 starsReviewed on 8/9/2025
Excellent, explained clearly and was very caring.
- 5 out of 5 starsReviewed on 8/8/2025
The front desk, nurse that took my vitals , and Dr Theo were all exceptional
- 5 out of 5 starsReviewed on 8/7/2025
Dr. Theo was attentive and soft spoken and would recommend him always
- 5 out of 5 starsReviewed on 8/2/2025
Dr. T is the best
- 5 out of 5 starsReviewed on 8/1/2025
I have referred to several family members to my MD.
- 5 out of 5 starsReviewed on 7/29/2025
Dr. Theofanis has been with me for 20 plus years. That speaks for itself.
- 5 out of 5 starsReviewed on 7/21/2025
Dr. Theofanis is an excellent doctor -- very knowledgeable and detailing with any concerns that you might have.
- 5 out of 5 starsReviewed on 7/20/2025
The nurse had me to go the room, the doctor came not too long after! He is very professional and caring, with a smile!
- 5 out of 5 starsReviewed on 7/17/2025
Dr. Theofanis Tsiamtsiouris is a kind, patient and caring physician.
- 5 out of 5 starsReviewed on 7/17/2025
Dr. Theofanis is a great doctor. Would highly recommend.
- 5 out of 5 starsReviewed on 7/13/2025
Always very helpful.
- 5 out of 5 starsReviewed on 7/12/2025
I already recommended Dr. Theofanis to my wife. Dr. Theofanis also called me back on the results from the test I took. Dr. Theofanis is a very warm person and listens to everything I say, and we communicate with language that I understand. Dr. Theofanis takes very good care of me and is concerned about my health, he's the best.
- 5 out of 5 starsReviewed on 7/10/2025
Consistent and excellent care is given by Dr. Tsiamtsiouris. He is always most caring, highly knowledgeable, explains all information clearly to me and answers any questions I may have. I honestly feel blessed to be under his care.
- 5 out of 5 starsReviewed on 7/3/2025
I love Dr. Theofanis He is caring, compassionate and kind. He is genuinely concerned about his patients and spends time to listen to my concerns.
- 5 out of 5 starsReviewed on 6/30/2025
Dr. Theo was great!
- 5 out of 5 starsReviewed on 6/27/2025
Dr Theo is an excellent doctor very caring and compassionate who listen to your concerns. I have already recommended him to other for Cardiology needs
- 5 out of 5 starsReviewed on 6/27/2025
I have been seeing Dr. Theo for 15 years. He is as thorough as the first time. Great bedside manners. He is a wonderful dr.
- 5 out of 5 starsReviewed on 6/25/2025
Care provider is professional, , caring and shows support. Excellent Dr.
- 5 out of 5 starsReviewed on 6/23/2025
Dr. Theo is terrific. I have been using him for 20 years. He is kind,, cares about me, answers. All my questions, returns phone calls and makes me feel important. I have recommended him to several friends and they all use him as their doctor.
- 5 out of 5 starsReviewed on 6/20/2025
Dr. Theo is great. He has been my doctor for over 20 years. We have recommend him to others and all were very happy with him. The best.
- No RatingReviewed on 6/20/2025
Excellent
- 5 out of 5 starsReviewed on 6/16/2025
Dr Theo is the best!
- 5 out of 5 starsReviewed on 6/14/2025
Dr. Theo is THE BEST!
- 5 out of 5 starsReviewed on 6/14/2025
Excellent
- 5 out of 5 starsReviewed on 6/14/2025
Was happy with my results
- 5 out of 5 starsReviewed on 6/13/2025
Dr Theo is great! Very caring. Good listener!Wonderful doctor. I have recommended him to friends
- 5 out of 5 starsReviewed on 6/11/2025
Dr Theo is the best! I have recommended him to many people who like him too!
- 5 out of 5 starsReviewed on 6/7/2025
Excellent
- 5 out of 5 starsReviewed on 6/1/2025
Great experience
- 5 out of 5 starsReviewed on 5/27/2025
Dr. Theo is the BEST!
- 5 out of 5 starsReviewed on 5/25/2025
Wonderful doctor. Compassionate, patient and most important, I did not feel rushed
- 5 out of 5 starsReviewed on 5/24/2025
Dr. Theo is always pleasant and concerned about my health.
- 5 out of 5 starsReviewed on 5/23/2025
I have the utmost trust in Dr theo
- 5 out of 5 starsReviewed on 5/18/2025
Dr. Theo is a thorough, kind and very interested doctor. He makes you feel he is glad to be there for you and is always very interested in what you have to say. I always leave him feeling I was in good hands.
- 5 out of 5 starsReviewed on 5/17/2025
Dr. Theo always listens very carefully to me. He answers all of my questions
- 5 out of 5 starsReviewed on 5/14/2025
Dr Theo is the best Dr I have ever seen
- 5 out of 5 starsReviewed on 5/8/2025
Dr. Theo is a good listener and health care provider.
- 5 out of 5 starsReviewed on 5/2/2025
Listens to me and answers all my questions
- 5 out of 5 starsReviewed on 4/27/2025
Dr. Theo is always caring and never rushing. He is calming and concerned
- 5 out of 5 starsReviewed on 4/25/2025
It was a great visit
- 5 out of 5 starsReviewed on 4/22/2025
Dr Theo is a "TEN" ! He is thorough, efficient, and courteous. Was keen to amend one medication I take daily and new Med is working very well.
- 5 out of 5 starsReviewed on 4/18/2025
Dr Theo is wonderful. I feel so comfortable with him. I would definitely and have recommended him; [...]
- 5 out of 5 starsReviewed on 4/17/2025
Dr. Theo is a great doctor and I have total confidence in him.
- 5 out of 5 starsReviewed on 4/17/2025
Lot more than I expected