Houston Fibroids now part of Texas EVA

281-690-5082 HOUSTON

MEET YOUR DOCTOR

Ryan Armstrong, M.D.

Board-Certified Interventional Radiologist ·
Vein & Vascular Specialist - The Woodlands & Sugar Land, TX

Dr. Armstrong treats legs that ache, swell, and cramp: varicose veins, chronic venous insufficiency, venous skin changes, and peripheral artery disease. He also performs embolization for uterine fibroids, hemorrhoids, knee osteoarthritis, and pelvic venous disorders. Every procedure is image-guided and done in the office, with local anesthetic and no hospital stay.
  • Accepting new patients
  • 16+ years of experience
  • Most insurance accepted
Who is Dr. Ryan Armstrong?
Dr. Ryan Armstrong is a double board-certified interventional and diagnostic radiologist with more than 16 years of experience, seeing patients at Texas Endovascular's clinics in The Woodlands and Sugar Land. He trained at UT Health Science Center at San Antonio, UTHealth Houston, and MD Anderson Cancer Center. 
He treats varicose veins, chronic venous insufficiency, venous skin changes and ulcers, peripheral artery disease (PAD), and performs embolization for uterine fibroids, hemorrhoids, and chronic joint conditions. Most of these treatments are done in the office through a small access point, often without major surgery or a hospital stay.
SPECIALTY
Vascular & Interventional 
Radiology
BOARD CERTIFICATION
Interventional Radiology & Diagnostic Radiology (ABR)
MEDICAL SCHOOL
UT Health Science Center at San Antonio
PRIMARY CLINICS
The Woodlands & Sugar Land, TX
LANGUAGES
English
EXPERIENCE
16+ years in interventional radiology
ABOUT DR. armstrong

Trained in Texas, practicing across 
Greater Houston since 2010

Most of Dr. Armstrong's work centers on the veins and arteries of the legs. Legs that feel heavy by mid-afternoon, swell by evening, or cramp at night. Visible ropey veins. Skin that darkens or thickens near the ankle. Wounds that will not close. Calf pain that eases the moment you stand still. Those are circulation problems, and most of them can now be treated through an access point the size of a pen tip, using ultrasound and live imaging to guide the work. Local anesthetic only, no general anesthesia, home the same day.

He also performs embolization for conditions outside the leg: uterine fibroids, internal hemorrhoids, osteoarthritis of the knee, and other chronic joint conditions. Same principle, same in-office setting, treating the problem from inside the vessel.

He trained at the University of Texas Health Science Center at San Antonio, UTHealth Houston, and MD Anderson Cancer Center, and his career since has spanned academic and outpatient practice. Today he sees patients at Texas Endovascular's clinics in The Woodlands and Sugar Land, offering high-quality care in a low-stress office setting, close to home.

Known for his precision and approachable care, Dr. Armstrong combines advanced imaging technology with a personalized, patient-first philosophy. He takes time to understand each person’s symptoms, goals, and health history before recommending a treatment plan designed for comfort, safety, and long-term results. He is a frequent referral resource for physicians and specialists across Houston.

Outside the clinic he stays in motion: cycling, weightlifting, running, and a fair amount of yardwork. He is also a baseball dad, most often found on the field coaching his three sons.
EDUCATION & TRAINING

Fellowship — Vascular & Interventional Radiology
UT MD Anderson Cancer Center, Houston, TX

Residency & Internship — Radiology
UT Health Science Center at Houston

Doctor of Medicine
UT Health Science Center at San Antonio

Board Certification
Interventional Radiology & Diagnostic Radiology

Practice
Texas Endovascular - The Woodlands & Sugar Land Clinics

“Tell me what your legs keep you from doing. That's the problem we're solving — the imaging just tells us how.”
- Ryan Armstrong, M.D.
conditions he treats
Image-guided treatment for veins,
arteries, and embolization conditions.
  • Vein Disease
  • Peripheral Artery Disease (PAD)
  • Pelvic Venous Disorders
  • Uterine Fibroids
  • Internal Hemorrhoids
  • Chronic Joint Conditions
video library

Dr. Armstrong answers what patients ask most

Symptoms, treatment options, and what a procedure day actually looks like, explained by the doctor who performs them.
patient experiences

What it's like to be treated by Dr. Armstrong

Unedited reviews from patients treated at our Woodlands and Sugar Land clinics.
where to see dr. armstrong

The Woodlands and Sugar Land

clinic

Texas Endovascular - The Woodlands

8850 Six Pines Dr, Suite 280
The Woodlands, TX 77380

Phone
(713) 489-6857

Hours
Mon–Fri, 8:00am–5:00pm

clinic

Texas Endovascular - Sugar Land

7619 Branford Pl, Suite 230
Sugar Land, TX 77479

Phone
(713) 489-6746

Hours
Mon–Fri, 8:00am–5:00pm

Common questions

Questions patients ask about Dr. Armstrong

Is Dr. Armstrong accepting new patients?

Yes. Dr. Ryan Armstrong is accepting new patients at Texas Endovascular's clinics in The Woodlands and Sugar Land, TX. He treats a broad range of vascular conditions and performs minimally invasive embolization procedures for conditions including uterine fibroids, internal hemorrhoids, knee osteoarthritis and pelvic venous disorders.

You can request an appointment online or call (281) 690-5082 to schedule a consultation.

Is Dr. Armstrong board-certified?

Yes. Dr. Armstrong is board-certified in interventional radiology and diagnostic radiology. He earned his medical degree at the University of Texas Health Science Center at San Antonio, completed his internship and radiology residency at UTHealth Houston, and finished fellowship training in vascular and interventional radiology at UT MD Anderson Cancer Center. He has more than 16 years of experience in interventional radiology.

Do I need a referral to see Dr. Armstrong?

A referral is not required for most patients to schedule a consultation. Some insurance plans do require a referral or prior authorization before your visit. Our team can verify your benefits and tell you exactly what your plan needs. 

Texas Endovascular accepts Medicare and most major health insurance plans.

What conditions and procedures does Dr. Armstrong treat?

Dr. Armstrong specializes in minimally invasive, image-guided treatment across vascular disease and embolization. His areas of expertise include:

Many of these procedures are performed on an outpatient basis using real-time imaging and local anesthetic, with recovery depending on the specific treatment. 

What is an interventional radiologist, and why should I see one for my veins?

An interventional radiologist is a physician who specializes in minimally invasive, image-guided procedures. Instead of making a traditional surgical incision, an interventional radiologist uses ultrasound, X-ray and other live imaging to guide small instruments through a tiny access point to diagnose or treat a condition.

For vein disease, this can mean treating problematic veins without traditional vein stripping. Many vein procedures can be performed under local anesthetic on an outpatient basis, allowing patients to return home the same day. Dr. Armstrong has more than 16 years of experience performing image-guided procedures.

What is embolization, and what conditions does Dr. Armstrong treat with it?

Embolization is a minimally invasive procedure that uses image guidance to deliver tiny particles or other materials through a small catheter to intentionally reduce or block abnormal blood flow to a targeted area.

Dr. Armstrong has extensive experience using embolization to treat a range of conditions, including uterine fibroids, internal hemorrhoids, knee osteoarthritis and pelvic venous disorders.

Because embolization is targeted and performed through a small access point, it can provide a minimally invasive alternative to traditional surgery for appropriate patients.

Does Dr. Armstrong treat knee pain or osteoarthritis?

Yes. Dr. Armstrong performs genicular artery embolization (GAE), a minimally invasive, image-guided treatment for certain patients with knee osteoarthritis. GAE targets abnormal blood flow associated with inflammation around the knee and may help reduce pain for appropriate patients.

A consultation can help determine whether GAE is an appropriate option based on your symptoms, imaging, medical history and previous treatments. 

Not ready to schedule a consult? Take our 2-minute quiz to help determine if you would be a good candidate for GAE.

Does Dr. Armstrong treat peripheral artery disease (PAD)?

Yes. Dr. Armstrong offers minimally invasive, image-guided treatment for peripheral artery disease. PAD occurs when arteries that carry blood to the legs become narrowed or blocked. Symptoms can include cramping or aching in the legs during walking that improves with rest, as well as more advanced circulation problems.

Dr. Armstrong evaluates the severity and location of the disease and discusses appropriate treatment options based on each patient's condition.

What happens during a consultation with Dr. Armstrong?

Your first visit is about understanding what is actually causing your symptoms and what options may be available.

Dr. Armstrong starts by listening to your history, symptoms and how they affect your daily life. When appropriate, he performs an examination and imaging to better understand the underlying problem. He then explains what he sees and walks you through the appropriate treatment options, including their benefits, risks and alternatives.

The goal is not simply to recommend a procedure. It is to help you make a confident, informed decision about your care.

Are Dr. Armstrong's treatments outpatient?

Many of Dr. Armstrong's minimally invasive, image-guided procedures are performed on an outpatient basis in the clinic using local anesthetic. Most patients return home the same day, without a hospital stay or general anesthesia.

Recovery and activity restrictions vary depending on the procedure. Dr. Armstrong and his team will explain what to expect before and after treatment.

Does Dr. Armstrong perform procedures other than vein and artery treatment?

Yes. Dr. Armstrong's practice extends beyond traditional vein and artery care. He performs targeted embolization procedures for uterine fibroids, internal hemorrhoids, knee OA and other chronic joint conditions.

This breadth of embolization expertise allows him to offer minimally invasive treatment options across a range of conditions, often providing an alternative to more invasive procedures for appropriate patients.

Where does Dr. Armstrong see patients?

Dr. Armstrong sees patients at two Texas Endovascular clinics: The Woodlands, at 8850 Six Pines Drive, Suite 280, The Woodlands, TX 77380; and Sugar Land, at 7619 Branford Place, Suite 230, Sugar Land, TX 77479.

The two locations serve patients throughout The Woodlands, Spring, Conroe, Tomball, Sugar Land, Missouri City, Richmond, Stafford, Bellaire and the surrounding Houston area.

How do I schedule an appointment with Dr. Armstrong?

Request an appointment online or call Texas Endovascular at (281) 690-5082. Our team can answer questions about scheduling, insurance, referrals and what to expect at your first visit, and can help you choose the location that is most convenient for you.

FROM DR. ARMSTRONG

Patient education, written and reviewed by Dr. Armstrong

Take the first step toward lasting relief

Aching, swelling, or cramping legs. Pain that starts when you walk. Heavy periods from fibroids, or knee pain that limits what you can do. Dr. Armstrong treats all of it in The Woodlands and Sugar Land, in the office and without a hospital stay.