Dr. Todd Steed, MD, FSIR: 2026 Guide To Interventional Radiology Care And Clinical Specialties

Dr. Todd Steed, MD, FSIR, is a board-certified vascular and interventional radiologist recognized nationally for expertise in minimally invasive, image-guided procedures. Holding the distinction of Fellow of the Society of Interventional Radiology (FSIR)—an honor conferred upon fewer than 10 percent of interventional radiologists—Dr. Steed specializes in targeted treatments that eliminate the need for traditional open surgery across peripheral vascular, oncologic, and venous conditions.

Minimally invasive therapies have altered the standard of surgical care by reducing physical trauma, shortening recovery times, and minimizing hospital admissions. Understanding the qualifications, clinical focus areas, and treatment options provided by an interventional radiologist ensures that referring physicians and patients make evidence-based decisions for specialized medical care in 2026.

Understanding the FSIR Distinction and Clinical Credentials

The credentials behind a physician reflect years of rigorous clinical evaluation, board assessments, and sustained contributions to the medical field. Interventional radiology requires extensive post-graduate clinical training that bridges advanced diagnostic imaging with precise surgical intervention.

What the FSIR Fellowship Signifies in Interventional Radiology

The FSIR designation represents Fellowship in the Society of Interventional Radiology. It is not an entry-level professional membership; rather, it is one of the highest honors awarded by the Society of Interventional Radiology (SIR). Conferred exclusively on senior specialists who demonstrate sustained excellence, leadership, and clinical innovation, the designation requires:

• Significant contributions to published research, clinical trials, or the advancement of catheter-directed therapies.
• Active leadership in professional medical education, training surgical fellows, or establishing departmental safety standards.
• A peer-reviewed track record of clinical ethics, advanced surgical outcomes, and superior patient safety metrics.

Board Certification and Procedural Training

A specialist holding these credentials completes four years of medical school followed by an intensive diagnostic radiology residency and dedicated vascular and interventional radiology subspecialty fellowship training. Interventional radiologists maintain dual-board certification through the American Board of Radiology (ABR) in both Diagnostic Radiology and Interventional Radiology/Diagnostic Radiology (IR/DR). This background enables clinicians to interpret complex imaging modalities—such as multidetector computed tomography (CT), dynamic magnetic resonance angiography (MRA), and high-resolution duplex ultrasonography—while simultaneously deploying microcatheters, stents, and targeted therapeutic agents directly inside human vascular networks.

Core Clinical Specialties and Advanced Image-Guided Treatments

Interventional radiology uses real-time fluoroscopy, cone-beam CT, and ultrasound guidance to access deep vascular structures through needle punctures no larger than a standard pinhead. Dr. Todd Steed’s clinical scope covers four broad pillars of modern image-guided medicine.

1. Peripheral Artery Disease (PAD) and Limb Salvage

Peripheral artery disease involves the narrowing or total occlusion of lower extremity arteries due to atherosclerotic plaque. Left untreated, PAD leads to intermittent claudication, critical limb ischemia, non-healing foot ulcers, and eventual amputation. Interventional therapies include:

• Balloon Angioplasty and Drug-Coated Balloons (DCB): Mechanically reopening narrowed tibial or femoral vessels while delivering anti-proliferative drugs to prevent restenosis.
• Intravascular Stenting: Placing bio-compatible bare-metal or covered nitinol stents to preserve luminal patency in calcified segments.
• Directional and Rotational Atherectomy: Using micro-cutting or rotational debulking tools to shave and extract hard calcifications without thermal injury to the blood vessel wall.

2. Complex Venous Disease and Deep Vein Thrombosis (DVT) Management

Chronic venous insufficiency and acute thrombotic conditions demand rapid, definitive intervention to avoid post-thrombotic syndrome (PTS) and pulmonary embolism (PE). Clinical interventions center on:

• Catheter-Directed Thrombolysis (CDT): Infusing targeted thrombolytic enzymes directly into extensive iliofemoral blood clots over controlled intervals.
• Percutaneous Mechanical Thrombectomy: Mechanically macerating and aspirating large clot burdens in single-session interventions, avoiding intensive care stays.
• Deep Venous Stenting: Relieving mechanical compressions such as May-Thurner syndrome using dedicated venous self-expanding stents to restore unobstructed outflow from the lower limbs.
• Endovenous Thermal Ablation and Microfoam Sclerotherapy: Eliminating incompetent saphenous veins to resolve symptomatic chronic venous hypertension, swelling, and stasis ulcers.

3. Interventional Oncology

Interventional oncology serves as the fourth pillar of cancer care alongside medical, surgical, and radiation oncology. By navigating directly through tumor-feeding arterial networks, targeted local therapies spare healthy adjacent parenchyma:

• Transarterial Chemoembolization (TACE): Direct intra-arterial delivery of concentrated chemotherapy emulsions followed by microvascular embolic spheres to suffocate liver malignancies (such as hepatocellular carcinoma or metastatic colorectal disease).
• Yttrium-90 Radioembolization (Transarterial Radioembolization - TARE): Infusing millions of radioactive microspheres into hepatic microvessels to emit high-dose, localized beta radiation.
• Percutaneous Thermal Ablation: Utilizing radiofrequency (RFA), microwave (MWA), or cryoablation probes inserted through the skin to freeze or burn focal tumors in the liver, kidney, or lung.

4. Embolization Therapies for Benign Conditions

Selective embolization blocks targeted microcirculation to resolve benign pathologies, chronic pain, or abnormal bleeding:

• Uterine Fibroid Embolization (UFE): An established, uterus-preserving alternative to hysterectomy or myomectomy that blocks blood flow to fibroids, causing them to shrink and resolving heavy menstrual bleeding.
• Prostate Artery Embolization (PAE): Treating lower urinary tract symptoms resulting from benign prostatic hyperplasia (BPH) without surgical resection or risks of sexual dysfunction.
• Genicular Artery Embolization (GAE): An emerging procedure that selectively closes inflammatory hypervascular branches around the knee to manage refractory osteoarthritic pain.

Procedural Comparison: Interventional Radiology vs. Open Surgery

Minimally invasive interventional radiology differs significantly from traditional open surgical reconstructions across patient-centered outcomes, anesthesia requirements, and recovery timelines.

Clinical Workflow: From Consultation to Procedure

Accessing advanced vascular and interventional care involves a structured clinical pathway designed to maximize diagnostic precision, reduce perioperative risks, and ensure durable therapeutic outcomes.

1. Initial Clinical Evaluation and Non-Invasive Diagnostics The care pathway begins in an outpatient clinic setting. Dr. Steed and the clinical team evaluate symptoms, perform thorough neurovascular examinations, and review prior non-invasive cross-sectional imaging. If diagnostic data is incomplete, high-resolution duplex ultrasound, CT angiography, or MR angiography is scheduled to construct a detailed 3D vascular map before any invasive steps are taken.

2. Pre-Procedural Assessment and Risk Stratification Baseline renal function tests (serum creatinine and estimated glomerular filtration rate [eGFR]) are verified due to the intraprocedural use of iodinated contrast agents. Coagulation profiles (INR, PTT, platelet counts) are screened to adjust antiplatelet or anticoagulant regimens safely. Cardiovascular risk is assessed to determine eligibility for moderate conscious sedation versus monitored anesthesia care.

3. Image-Guided Intraoperative Execution Procedures are performed in a specialized Interventional Radiology Suite (Cath Lab) equipped with flat-panel digital subtraction angiography (DSA) and integrated cone-beam CT. Using micropuncture vascular access kits, the target vessel (typically the common femoral or radial artery) is entered under real-time ultrasound guidance. Specialized glide wires and microcatheters are guided through blood vessels directly to the pathology to perform recanalization, stenting, or selective embolization.

4. Vascular Closure and Immediate Recovery Once therapeutic objectives are verified with completion angiograms, catheters are withdrawn. Arterial access sites are sealed using dedicated extravascular closure devices (such as collagen plug or suture-mediated systems) to secure immediate hemostasis and avoid prolonged bed rest. Patients recover in specialized post-anesthesia units for 2 to 4 hours before discharge.

5. Post-Procedural Follow-Up and Surveillance Long-term efficacy depends on active surveillance. Follow-up visits at 30 days, 6 months, and 12 months monitor clinical symptom resolution, wound healing, and vascular patency via serial ultrasound or non-contrast cross-sectional imaging.

Clinical Network Coordination, Coverage, and Referral Guidelines

Navigating subspecialty clinical care requires clear coordination between primary care providers, referring medical specialists, hospital facilities, and health insurance carriers.

Operational Referral Protocols for Referring Providers

Referral Documentation Checklist Referring clinics should transmit all recent progress notes, operative summaries, cross-sectional imaging discs (DICOM format), official radiology reports, and lab results reflecting renal function and coagulation status within the last 30 to 60 days.

PCP Alignment Requirements Commercial and Medicare Advantage HMO plans frequently require an active, electronically submitted Primary Care Physician referral before the initial interventional radiology consultation.

Pre-Authorization Workflow Complex endovascular interventions—including atherectomy, radioembolization, and arterial embolization—require prior authorization. Submitting documented conservative medical management failures (such as structured exercise therapy for PAD or medical management for uterine fibroids) prevents administrative delays.

Insurance Alignment and Plan Considerations

In 2026, insurance structures require strict adherence to network designations. Interventional radiology practices maintain contracted relationships with a wide variety of carriers:

• Medicare and Supplemental Policies: Traditional Medicare Part B generally covers medically necessary interventional radiology procedures, including PAD revascularization, cancer ablation, and therapeutic embolization, subject to annual deductibles and 20% coinsurance (routinely absorbed by secondary Medigap plans).
• Medicare Advantage Plans: Network participation varies widely by county and health system. Plans contracted with regional health networks (such as UnitedHealthcare, Aetna, Humana, or regional Blue Cross Blue Shield programs) require pre-procedural medical necessity reviews.
• Commercial PPO and POS Networks: Major commercial insurers cover standard image-guided procedures provided specific peer-reviewed indications are met.
• Worker’s Compensation and Specialized Programs: Traumatic arterial disruptions, deep vein thrombosis secondary to workplace trauma, or chronic occupational vascular compressions require verified claim authorization prior to elective interventions.

Frequently Asked Questions

What does "FSIR" stand for after a physician's name?

FSIR stands for Fellow of the Society of Interventional Radiology. It is an advanced professional distinction conferred upon a select group of interventional radiologists who have demonstrated sustained excellence, research contributions, and leadership in image-guided, minimally invasive medicine.

Holding the FSIR credential indicates that the physician has been peer-reviewed and vetted by the national specialty society as an established expert in the discipline.

How does an interventional radiologist differ from a general diagnostic radiologist?

While diagnostic radiologists focus primarily on interpreting diagnostic images such as X-rays, CT scans, and MRIs, interventional radiologists undergo years of additional clinical surgical training to treat diseases directly. Interventional radiologists evaluate patients clinically in an office setting, perform image-guided procedures, manage hospital admissions, and oversee longitudinal follow-up care.

Are interventional radiology procedures performed under general anesthesia?

Most interventional radiology procedures do not require general anesthesia. The majority are completed using local anesthesia at the skin puncture site combined with moderate conscious sedation (twilight sleep), which keeps patients comfortable, relaxed, and pain-free while breathing on their own.

Certain complex or pediatric cases may utilize monitored anesthesia care or general anesthesia when complete immobility is necessary.

How long is the recovery period following a vascular embolization or angioplasty?

Most patients are discharged on the same day or following a brief overnight observation period. Because there are no large surgical incisions, physical recovery is rapid; most patients resume normal, non-strenuous daily activities within 24 to 72 hours, depending on the specific access site and intervention performed.

Strenuous exercise or heavy lifting is typically restricted for 5 to 7 days to ensure the vascular puncture site heals securely.

Do I need a referral from my primary care doctor to see Dr. Todd Steed?

Whether you need a formal referral depends on your insurance plan type. Preferred Provider Organization (PPO) plans and Original Medicare typically allow patients to self-refer directly for clinical evaluations, while Health Maintenance Organization (HMO) and point-of-service plans require an official referral from an attributed Primary Care Physician.

Even when not required by insurance, providing relevant clinical records and imaging discs from your treating physician ensures an efficient first appointment.

Navigating Your Minimally Invasive Treatment Options

Navigating complex vascular disease, uterine fibroids, or localized tumors no longer requires extensive open surgical incisions, prolonged hospital stays, or arduous rehabilitation periods. Interventional radiology provides precise, image-guided therapies that target disease at the cellular and microvascular level while leaving healthy surrounding anatomy untouched.

If you or a loved one are facing a surgical recommendation for peripheral artery disease, chronic venous insufficiency, uterine fibroids, or focal oncology care, consult with an interventional radiology specialist to evaluate all minimally invasive options. Review your clinical imaging with a board-certified specialist, confirm your network benefits, and take an active role in planning your care.