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The Vein Specialists


3302 Gerig Drive Suite 100
Bloomington, IL 61704
Last Updated: September 20, 2017


About The Vein Specialists

About The VEIN Specialists

Insurance and Billing
Our Philosophy

The VEIN Specialists is the first vein clinic in Bloomington / Normal dedicated exclusively to state-of-the-art treatment of vein disease to help you return to your active lifestyle.  We offer Endovenous Laser Ablation, a non-surgical procedure done in our office, to those who suffer leg pain and discomfort from vein disease and fear traditional vein surgery.

Don’t let varicose or spider veins slow you down!  Take that first step toward the lifestyle you want and schedule a Initial Office Visit with us today.  Let us prepare a customized treatment plan for you.  The VEIN Specialists,  Better Care.  Better Results.

Drs. Bohn, Nielsen and Castillo are committed to Varicose Vein Disease Treatment.

For over 20 years, Dr. Bohn and Dr. Nielsen have been treating patients in the Emergency Department at OSF St. Joseph Medical Center and Advocate BroMenn Medical Center. “We were looking to transition our medical careers into a field of medicine where we could have an ongoing relationship with our patients.”

The physicians completed advanced Fellowship training and opened The VEIN Specialists (formerly Illinois Vein Specialists, Bloomington LLC), dedicated exclusively to the state-of-the-art treatment of vein disease.

Treatments are covered by Medicare and most insurance plans.


• Diagnostic Ultrasound
• Endovenous Laser Treatment
• Ultrasound Guided Sclerotherapy
• Therapeutic Sclerotherapy
• Cosmetic Sclerotherapy

“Our mission is to provide each patient with a comfortable, respectful care as well as delivering the best possible vein treatment.”

Kathryn Bohn, MD

Dr. Bohn opened The VEIN Specialists, in Bloomington/Normal Illinois dedicated exclusively to the state-of the-art treatment of vein disease.

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Thomas Nielsen, MD

I am passionate about educating the public and my peers regarding vein disease. Any time you would like to ask me a question, please feel free!

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Richard Castillo, MD

Practicing Phlebology allows me the opportunity to get to know my patients better and hear their stories, something I really enjoy.

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The VEIN Specialists has a medical staff that understands the dangers of venous disease and the treatments needed. We have made it a priority to train all staff in vein disease so our patients can feel comfortable asking our staff a question.

Although many people have heard about spider and varicose veins, few understand what causes them, what the symptoms are, or how serious they can be. The VEIN Specialists’ staff realizes the importance of educating our patients and the community about venous disease, symptoms and treatment. The physicians at The VEIN Specialists want to promote education and the importance of vein health in the community. This is accomplished through informational sessions at luncheons, retirement homes and health fairs, just to name a few.

Drs. Bohn, Castillo and Nielsen are working directly with the Heartland Community College Nursing School and the Illinois State University Pre-Professional Mentorship Program to develop the next generation of healthcare providers.

Meet Our Staff!

With the evaluation and treatment methods available today, Varicose Veins and Spider Veins can be treated at a level of effectiveness and safety previously unattainable. Regardless of which treatment method is used, its success depends in part on careful assessment of the problem by a knowledgeable physician who exclusively treats venous disease. There are many underlying causes of varicose veins, so successful treatment of a particular vein problem does not necessarily prevent vein problems from recurring in the future.

Learn more about Varicose Veins here!

Learn more about Spider Veins here!

Restless Leg Syndrome (RLS) is a problem that up to 10% of the US population experiences that causes a strong urge to move your legs. RLS is a recognized neurological disorder that can interfere with resting or falling asleep.

Learn more about Restless Leg Syndrome here!

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