About VivaRay

VivaRay is part of Texas Cancer Institute, a specialized radiation therapy practice in Austin, Texas. Our physicians bring decades of experience using advanced radiotherapy to treat complex and non-cancer medical conditions with precision and safety so that more people can experience life with less pain.
You Don’t Have to Live With The Pain

When you’re sitting in your doctor’s office, rubbing an aching knee or stiff shoulder, and you finally ask, “What are my other options?” you deserve more options than “learn to live with it.”

Our patients are adults who’ve built active lives — professionals, active parents and grandparents, weekend athletes, people who simply want to keep doing what they love. They’re looking for relief that works, backed by science and grounded in care.

At VivaRay, we offer a proven, noninvasive medical treatment that’s been used for decades to treat chronic pain and non-cancerous conditions. It’s completely safe, evidence-based, and covered by insurance, so you can finally find the relief you’ve been waiting for.

Our Approach

We believe every patient deserves access to safe, effective medical options — especially when surgery or long-term medication isn’t the right fit.

Evidence-based
care

We apply the same rigor and safety protocols used in oncology to the treatment of non-cancer conditions.

Collaborative treatment planning

Every plan is developed in consultation with your referring physician or specialist.

Efficient, outpatient treatment 

Most patients complete six short sessions over two weeks with no anesthesia, no hospital stay, and no recovery time.
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Meet Your Pain Relief Team

Paiman Ghafoori, MD

Board certified radiotherapy doctor

Harvard University – Medical School

Duke University Medical Center – Residency

Dr. Ghafoori has received numerous national research awards and grants, including recognition from the National Institutes of Health (NIH) and the American Society of Clinical Oncology. He also serves as Assistant Professor at Dell Medical School at the University of Texas and has been repeatedly voted one of the Top 10 Radiation Oncologists in Texas.

Shannon D. Cox, MD

Board certified radiotherapy doctor

University of Texas Medical Branch in Galveston – Medical School
University of Texas Health Science Center in San Antonio – Residency

Dr. Cox has been listed among the Best Austin Doctors several times by Austin Monthly. He has previously served as the President of the Austin Division of the American Cancer Society and served many years on the Texas Medical Physicist Licensure Board, the POEP (Physicians Oncology Education Program), as well as a subcommittee of the Texas Cancer Council.

Joshua Kovoor, MD

Board eligible radiotherapy doctor

Wayne State University – Medical School
University of North Carolina, Chapel Hill – Residency

Dr. Kovoor’s approach emphasizes personalized, evidence-based care. He works closely with each patient to ensure their treatment plan fits their condition, goals, and lifestyle.

He brings advanced training and hands-on expertise in using radiotherapy for benign, non-cancerous conditions — an area of focus that sets him apart in Austin. With a commitment to ongoing learning and patient-centered innovation, Dr. Kovoor ensures each individual receives safe, effective therapy tailored to their unique needs.

Kirsten Warhoe, MD

Board certified radiotherapy doctor

University of Colorado – Medical School
University of California, Davis and Baylor Scott & White Health – Residency
Internal Medicine and Radiation Oncology – Board Certification

Golnaz Sadr, CNS, DNP

Clinical Nurse Specialist

Master of science as a Clinical Nurse Specialist – University of Texas at Austin
Doctorate in Nursing practice – Johns Hopkins school of Nursing

Golnaz plays a key role in patient education and care coordination, ensuring each treatment experience is supportive and seamless.

Felicia Barber, APRN, FNP-C

Family Nurse Practitioner

Master of Science in Nursing – Sentara College of Health Sciences

Felicia provides attentive, compassionate care to each patient, supporting them through treatment and recovery with professionalism and empathy.

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Your Health and Comfort Are Our Top Priorities

Whether you’re managing chronic pain or recovering from injury, our team is committed to providing precise, patient-centered care that helps you move, live, and feel better.

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