Welcome to the Insight Institute
of Vascular Medicine

Empowering Lives with Innovative Vascular Care

At the Insight Institute of Vascular Medicine, we are dedicated to advancing vascular health and providing comprehensive care to enhance the well-being of our patients. Our board-certified vascular specialists are committed to offering state-of-the-art diagnostic and treatment services for a wide range of conditions, ensuring you receive the highest quality care in a compassionate and patient-centered environment.

Schedule an Appointment Today


2525 S Michigan Ave. Chicago, IL 60616
Main line: (312) 567-2000


Monday – Friday
8 a.m. to 5 p.m.

Patient-Centric Focus

Our team comprises highly skilled and experienced vascular specialists, consisting of board-certified surgeons and dedicated healthcare professionals. Our institute prides itself on offering a comprehensive suite of services, encompassing advanced diagnostic testing, minimally invasive procedures, and surgical interventions, all tailored to meet the unique needs of each patient.

Peripheral Arterial and Venous Diseases Overview

Peripheral arterial disease (PAD) is a common condition characterized by narrowed or blocked arteries, primarily caused by atherosclerosis, which leads to reduced blood circulation in the limbs, with legs being the most commonly affected area. Risk factors include smoking, hypertension, heart disease, diabetes, high cholesterol, kidney disease, stroke, and age over 60. Symptoms include leg pain during activity, improved with rest, and in severe cases, pain while lying flat. Other symptoms include muscle weakness, hair loss, shiny skin, cool extremities, decreased pulses, and ulcers. Diagnosis involves non-invasive tests like vascular ultrasound and ankle brachial index. Treatment includes exercise, medications, and minimally invasive procedures like angioplasty, with bypass surgery as an option in severe cases. Peripheral venous disease encompasses superficial and deep venous disease, caused by valve malfunction and clots in larger veins respectively, with treatments including compression stockings, exercise, blood thinners, and minimally invasive procedures like venous ablation and angioplasty.

Expertise and Specialization

The Insight Institute of Vascular Medicine is staffed by highly skilled and experienced vascular specialists, including board-certified surgeons and dedicated healthcare professionals. We specialize in the diagnosis and treatment of a wide range of vascular conditions, including peripheral artery disease (PAD), varicose veins, and deep vein thrombosis (DVT). IIVM also offers a comprehensive range of services, including diagnostic testing, minimally invasive procedures, and surgical interventions.

Patient Care Second to None

We understand that each patient is unique, which is why we take a personalized approach to patient care. From the moment you visit our office, the IIVM team is dedicated to providing individualized attention, listening to your concerns and developing a customized treatment plan tailored to your specific needs.

Meet Our Providers

Sameer Ahmed, MD

Dr. Margaret Kress

Sameer Ahmed, MD

Dr. Sameer Ahmed is Chairman of the Department of Endovascular and Image Guided Surgery at Insight Hospital & Medical Center Chicago. His areas of expertise include peripheral arterial disease, superficial and deep venous disease, limb salvage, embolization, and interventional oncology.

Dr. Ahmed received his medical degree with distinction from the Johns Hopkins University School of Medicine in Baltimore, Maryland. Dr. Ahmed completed an Internal Medicine internship at Yale University (Yale-New Haven Hospital), followed by residency at the Johns Hopkins Hospital. He completed a Vascular and interventional radiology fellowship at Northwestern Memorial Hospital in Chicago, where he specialized in the latest minimally-invasive and endovascular treatments.

With a passion for new technologies and how they can help his patients, Dr. Ahmed’s philosophy is to offer the latest in minimally-invasive procedures with compassion and respect for the individual and their families. He is committed to treating his patients as he would his own family, and believes in providing compassionate, personalized service built on trust and respect. Through his hard work and dedication, Dr. Ahmed has built a robust vascular program at Insight Hospital.

Dr. Ahmed has been recognized nationally for his leadership in research and education. He has published extensively on image guided and vascular procedures, and has trained medical students, residents, physician assistants, nurse practitioners, and attending physicians throughout the country on the latest techniques in endovascular and image guided surgery. He also hosts in-person and virtual training courses on endovascular treatments for peripheral vascular disease and has been invited to speak at national meetings on this topic.

Dr. Ahmed has received numerous awards in his specialty from the Radiological Society of North America, Society of Interventional Radiology, Radiology Leadership Institute, American College of Radiology, International Symposium on Endovascular Therapy, and several other institutions for his clinical and research work. He has also participated in national clinical trials on the treatment of peripheral vascular disease. Dr. Ahmed is recognized nationally as a leader in the treatment of peripheral arterial and venous disease.

Dr. Ahmed grew up in New Jersey and moved to Chicago after completing his residency. He speaks Urdu, Hindi, and English. In his spare time, Dr. Ahmed enjoys reading, fitness training, traveling, and spending time with his wife and two children.

Dr. Margaret Kress

Dr. Margaret Kress DNP, RN, FNP-c has been a nurse practitioner for the past 10 years with a focus in Vascular Surgery/Interventional Radiology/Endovascular. For the past 10 years she has also served as an Associate Professor at Northern Illinois University, North Park University, and Southern Illinois University in the Bachelor of Science Nursing Program. Margaret is board certified through the American Academy of Nurse Practitioners.
Margaret has over 20 years of experience in nursing that include neonatal, pediatric, adult critical care, and transport medicine where she worked as a flight nurse. In Margaret’s many years of experience, she has been engaged in Quality Assurance and has won many awards for her accomplishments in improving care.
Margaret has been instrumental in developing several education programs. Education being a priority, Margaret has provided hundreds of lectures to nurses providing continuing education and lectures in the community to increase awareness on several topics such as Peripheral Arterial Disease and Varicose Veins.

Margaret has a passion for research and has publications in the American Academy of Nurse Practitioner Journal.
Margaret is an active member of the Illinois Society for Advanced Practice Nursing, American Academy of Nurse Practitioners, and the American Nurses Association.

Margaret enjoys skiing, golfing, crafts, crocheting, reading, cooking, traveling, and spending time with children and grandchildren.

Schedule an Appointment Today

Ready to take the first step in improving your vascular health?
Schedule an appointment with the Insight Institute of Vascular Medicine today.