The Vein Institute of Hunterdon in Clinton NJ, Bridgewater NJ
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  • Offices in
  • Clinton
  • Bridgewater
  • Areas of Practice:
  • Cardiology

The Vein Institute of Hunterdon

About Us

The Vein Institute of Hunterdon is proudly accredited by the Intersocietal Accreditation Commission (IAC), a mark of our commitment to excellence in vascular care. Our practice combines advanced medical expertise with a warm, patient-centered environment designed to put you at ease from the moment you walk in.

Our dedicated team of skilled professionals delivers the latest in both medical and cosmetic treatments for varicose and spider veins. With a focus on cutting-edge technology, personalized care, and genuine compassion, we ensure every patient receives the attention and outcomes they deserve.

Our Doctor

Glen Tonnessen MD, MMM, FACC, FSCAI, DABVLM

Dr. Glen Tonnessen is a seasoned cardiologist and the Managing Director of The Vein Institute. With more than 30 years of experience in cardiovascular medicine and over a decade specializing in venous disease, Dr. Tonnessen brings deep clinical insight and a compassionate approach to patient care. He completed his residency in internal medicine at St. Michael’s Medical Center in Newark, New Jersey, followed by fellowship training in cardiovascular medicine through Seton Hall University. Board-certified in both cardiovascular disease and vascular medicine, Dr. Tonnessen is recognized for his comprehensive expertise in treating a wide range of circulatory conditions.

Dr. Tonnessen is a Fellow of the American College of Cardiology (FACC), a Fellow of the Society for Cardiovascular Angiography and Interventions (FSCAI), and a Diplomate of the American Board of Venous and Lymphatic Medicine (ABVLM). He also holds a Master of Medical Management degree from Carnegie Mellon University and is the founder of The Vein Institute of Hunterdon.

Education & Training
  • St. Michael’s Medical Center
  • Seton Hall University
Professional Memberships
  • Fellow in the American College of Cardiology (FACC)
  • Fellow of the Society of Cardiac Angiography and Intervention (FSCAI)
  • Diplomate of the American Board of Venous and Lymphatic Medicine (ABVLM)
Our Services

At The Vein Institute, we offer a range of advanced treatments for varicose and spider veins—designed to restore both comfort and confidence. Whether it’s sclerotherapy, ambulatory phlebectomy, or another targeted solution, our expert team is here to help you love the way you feel in your skin again.

Clinton Location
Phone: (908) 795-8657
Monday: 8:00 AM - 4:30 PM
Tuesday: 8:00 AM - 4:30 PM
Wednesday: 8:00 AM - 4:30 PM
Thursday: 8:00 AM - 4:30 PM
Friday: 8:00 AM - 4:30 PM
Saturday: Closed
Sunday: Closed
Bridgewater Location
Phone: (908) 795-8657
Monday: 9:00 AM - 5:00 PM
Tuesday: 9:00 AM - 5:00 PM
Wednesday: 9:00 AM - 5:00 PM
Thursday: 9:00 AM - 5:00 PM
Friday: 9:00 AM - 5:00 PM
Saturday: Closed
Sunday: Closed
Please Note:

We see patients one Monday per month for office visits only. Call to schedule your free consultation.

If you have leg issues this is the place you want to go… from my initial visit thru my ultrasound… down to the surgical procedure. I couldn’t have asked or prayed for a better result !!! Amanda will have you feeling way less anxious getting in the door… Sue will walk you thru your ultrasound and have you laughing… Vanessa, all I can say is what a fantastic bedside manner this woman has. I was relaxed and ready for my procedure… Dr. Tonnessen Thank you for making this procedure as comforting as you could. You are amazing !!! To the office.. I will refer you to the end of time.. Thank you !!
Gotta Haveit
The staff is absolutely fantastic. They’re very knowledgeable and treat every patient as a family and they are very thorough. And they always welcome you with a smile on their faces.
Brett Jamele
The staff are over the top…they are very accommodating and really care about the health and welfare of their patients…Kudos to The Vein Institute of Hunterdon.
Thomas Kay