About us

Trusted Worldwide for Excellence & Innovation in Complex Vascular Anomalies Care

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Our Center

Your One & Only Destination for Expert Vascular Anomalies Diagnosis and Treatment

Nestled in the heart of Darien, Connecticut, our state-of-the-art vascular care center offers an unparalleled blend of advanced medical excellence and comfort. Designed with the discerning patient in mind, our center provides a soothing environment where cutting-edge vascular treatments meet personalized, compassionate care.

Led by Dr. Naiem Nassiri, a world-renowned vascular surgeon whose expertise attracts patients from across the globe, our center specializes in rare and complex vascular conditions, offering groundbreaking outpatient treatments for adults and pediatric patients. Here, innovation and precision are paired with a commitment to your comfort and well-being.

Whether you’re traveling internationally or seeking expert care close to home, our Darien facility is a space for healing, designed to support your journey toward optimal vascular health.

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Our Team
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Why Choose Us

Setting the Standard for Rare Vascular Conditions

At The Vascular Care Group’s Center for Anomalies and Rare Entities (TVCG CARES), we offer world-class multifaceted expertise under the leadership of our founding director, Dr. Naiem Nassiri, a globally recognized authority in the treatment of vascular anomalies and malformations.

Our center provides a calm and patient-focused environment where cutting-edge, complex surgical, minimally invasive, and non-invasive therapies are delivered with the highest standards of safety and efficacy.  

Our focus is primarily on maintaining the patient’s livelihood and maximizing their quality of life throughout the therapeutic journey and beyond. Our commitment to the patients and their loved ones is lifelong, and we aim to be the patients’ “home base” for all things related to their vascular condition-ranging from surgical and interventional needs to psychosocial aspects of their disease and related therapies. 

With extensive experience in clinical trials, direct engagement with the U.S. FDA, as well as communications overseas, we remain at the forefront of innovation, ensuring that our patients receive the most advanced and least invasive treatment options available. Our dedicated team is committed to accommodating patients from local, regional, national, and international backgrounds, offering seamless, concierge-level care. 

At TVCG CARES, we redefine excellence in the convoluted and often frightening realm of vascular anomalies, providing life-changing treatments with compassion, expertise, and an unwavering commitment to patient well-being.

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Contact Us
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Testimonials

See Why Patients Trust Us

“Dr. Nassiri demonstrated excellent bedside manners; immediately putting me at ease and making me feel comfortable throughout the entire appointment. Dr. Nassiri took the time to listen patiently to my concerns and thoroughly answered all of my questions. His expertise in addressing my specific issues was evident, and I appreciated his generous approach in sharing his knowledge. In addition to his exceptional medical skills, Dr. Nassiri’s caring and thoughtful disposition truly stood out. I would highly recommend him to anyone seeking a skilled and compassionate vascular surgeon.”

Mary Anne N.

“Dr Nassiri is fantastic. I’m very happy to be his patient. He listens, explains everything perfectly and he’s very caring. The staff and nurses are a credit to their profession and have been very caring.”

Richard M.

“I truly appreciate Dr Nassiri for helping me and finding out what my issue was and then performing the procedures I needed to have done to get my legs back to good health. He’s a very GOOD DR. and very professional at what he does and I’m so happy I was recommended to him by my primary care doctor. I will definitely recommend Dr. Nassiri to anyone I know that may have a problem with their veins like I did. My situation was really bad but Dr. Nassiri is working through me getting relief and I’m so GRATEFUL for him.”

Bernard B.

“Dr Nassiri saved my mother-in-law’s life after a cardiac procedure. First visit was this week & follow up appts for further tests have been scheduled. Great professional manners by him & staff. Post surgery he greeted me with compassion, explained all to me whereas no one did who was employed at the hospital. He knew what he was doing, answered my questions, & more. Great teaching skills, too. He isn’t a physician that will sugar coat situations & is very thorough.”

Leslie C.

“The only doctor around who’s actually knowledgeable about and able to treat my AVM.”

Julia B.

“There aren’t enough words to express how amazing Dr. Nassiri is. A man who is known for his experience and talent STILL humble enough to CARE & SEE patients is truly beautiful. The attention and concern he puts in is exceptional to say the least. His team has been going above and beyond for me and getting me back to health. So grateful God brought this divine introduction and recovery walk here with Dr. Nassiri.”

Regina D.

“I recently had a virtual appointment with Dr. Nassiri, and I must say that I am thoroughly impressed with his expertise and professionalism. Despite the distance as I live in a different state, I chose to consult him due to his reputation as one of the best in the field of vascular medicine, and I am glad I did. He demonstrated a deep understanding of my condition and took the time to address all of my concerns with clarity and patience. His confidence in his work was evident throughout our discussion, which instilled trust and reassurance in me as his”

Natalie D.

“Dr. Nassiri was exceptional. His expertise was apparent as was his devotion to medicine and the patient’s experience and thorough understanding of the conditions we discussed. Dr. Nassiri truly gave me hope. He went out of his way to arrange referrals for my condition with other specialists as well to coordinate care. It is rarer to experience this degree of genius, compassion, and dedication. I highly recommend Dr. Nassiri.”

Ava H.

“The staff at the Vascular Care Group is amazing. They went above and beyond helping me, my husband, and especially my 3-year-old son. They played with my son and soothed him. They kept him occupied so that my husband and I could speak with the doctor uninterrupted. It was the first time we’d had such an occurrence, and we will always remember the staff, especially nurse Lana!”

Jameson C.

“I really was very appreciative of the care and time that was given to me. I was very impressed with Dr Nassiri mostly because he provided me with some answers where no one else would help me or get involved. He also spent a lot of time with me during our consultation I was never rushed. He’s very bright and professional and I have complete confidence in his ability to resolve my issue.”

Pamela C.

“Dr. Nassiri to me you are a phenomenal physician. Compassionate, knowledgeable and highly skilled. Your staff is friendly and caring. I would refer your practice to anyone in need. Thank you for your service thus far.”

Mattie F.

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vascular care

Specialized Care for Complex Vascular Conditions

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let’s talk

Contact Us Today for Expert Care, Answers, and Personalized Treatment Options

(203) 548-7858

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