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Medical School:  Creighton University – Omaha, NE

Internal Medicine: Creighton University affiliated hospitals – Omaha, NE

Diagnostic Radiology: University of Minnesota Hospitals & Clinics – Minneapolis, MN

Neuroradiology: Univeristy of Minnesota Hospitals & Clinics – Minneapolis, MN

American Board of Radiology – Diagnostic Radiology 1993

American Board of Radiology – CAQ Neuroradiology 2001, 2011

Medical School:  Chicago College of Osteopathic Medicine – Downers Grove, IL

Internal Medicine: Cook County Hospital – Chicago, IL

Internal Medicine: Cook County Hospital – Chicago, IL

Radiology: Cook County Hospital – Chicago, IL

Breast & Women’s Imaging:  Northwestern University Feinberg School of Medicine, Northwestern Memorial Hospital Department of Radiology, Lynn Sage Comprehensive Breast Center –  Chicago, IL

American Board of Radiology 2003

Recertification 2013

Medical School:  University of California School of Medicine – Los Angeles, CA

University of Texas Medical Branch – Galveston, TX

Internal Medicine: Cedars-Sinai Medical Center – Los Angeles, CA

Diagnostic Radiology: University of California School of Medicine – Los Angeles, CA

Neuroradiology: Barrow Neurological Institute – Phoenix, Arizona

American Board of Radiology 1994

Added qualifications in Neuroradiology 1996

Added qualifications in Interventional Radiology 1999

Medical School: Midwestern University / Chicago College of Osteopathic Medicine – Downer’s Grove, IL

Internal Medicine: Midwestern University / Franciscan St. James Health – Olympia Fields, IL

Diagnostic Radiology: Midwestern University / Franciscan St. James Health – Olympia Fields, IL

Musculoskeletal Imaging: Mayo Clinic – Rocherster, MN

Breast Imaging: Mallinckrodt Institute of Radiology / Washington University in St. Louis – St. Louis, MO

American Osteopathic Board of Radiology

Medical School: University at Buffalo School of Medicine – Buffalo, NY

Internal Medicine: University at Buffalo School of Medicine Catholic Health System – Buffalo, NY

Diagnostic Radiology: University of Miami, Jackson Memorial Hospital – Miami, FL

Neuroradiology: UCSF Neuroradiology – San Francisco, CA

American Board of Radiology

Medical School: University of Virginia School of Medicine – Charlottesville, VA

Interventional Radiology: Michigan Medicine – Ann Arbor, MI
Riverside Medical Center – Newport News, VA

Interventional Radiology: Michigan Medicine – Ann Arbor, MI

Medical School:  Washington University School of Medicine – St. Louis, MO

MA, Cell Biology: Washington University – St. Louis, MO

Transitional: St. Johns Mercy Medical Center – St. Louis, MO

Radiology: University of California School of Medicine – Los Angeles, CA

National Cancer Institute Fellow in Body Imaging:  Stanford University – Palo Alto, CA

American Board of Radiology 1997

Medical School: Saint Louis University School of Medicine, St. Louis, MO

Internal Medicine: Exempla St. Joseph Hospital, Denver, CO

Diagnostic Radiology: Stanford University Hospital, Stanford, CA

Musculoskeletal Imaging: Stanford University Hospital, Stanford, CA

American Board of Radiology 2005

Medical School:  Government Medical College – India

Transitional: William Beaumont Hospital – Royal Oak, MI

Diagnostic Radiology: William Beaumont Hospital – Royal Oak, MI

Cross-Sectional Imaging: Johns Hopkins Medical Institutions – Baltimore, MD

American Board of Radiology 2003

Medical School:  University of Michigan Medical School – Ann Arbor, MI

Mallinckrodt Institute of Radiology, Washington University Medical Center – St. Louis, MO

Magnetic Resonance Imaging: Cedars-Sinai Medical Center, Los Angeles, CA

American Board of Radiology 1993

Medical School:  University of Nebraska School of Medicine – Omaha, NE

Rotating: Central Texas Medical Foundation – Austin, TX

Diagnostic Radiology: Emory University Hospital – Atlanta, GA

Musculoskeletal Imaging: University of California San Francisco – San Francisco, CA

American Board of Radiology 1995

Medical School:  University of Southern California Keck School of Medicine – Los Angeles, CA

Transitional: Letterman Army Medical Center, Presidio of San Francisco – San Francisco, CA

Diagnostic Radiology: Tripler Army Medical Center – Honolulu, HI

Body Imaging: University of Colorado Health Sciences Center – Denver, CO

Musculoskeletal Radiology:  University of Colorado Health Sciences Center – Denver, CO

American Board of Radiology 1994

Tate Kirk, MD, is a board-certified diagnostic and interventional radiologist in White Plains, New York. He is an assistant professor of radiology at Columbia University Irving Medical Center and an attending radiologist at NewYork-Presbyterian Hospital. Dr. Kirk has held faculty positions at Montefiore Medical Center and Lenox Hill Hospital, where he led the division of Vascular and Interventional Radiology. Currently, he serves as the lead interventional radiologist at NewYork-Presbyterian “The One” in White Plains.

As an interventional radiologist, Dr. Kirk performs image-guided, minimally invasive procedures to manage and treat a wide variety of clinical conditions. His particular focus and interests are in the treatment of liver-directed cancer treatment (Y-90 radioembolization, percutaneous ablation) and portal venous interventions. Dr. Kirk also performs a range of procedures for non-cancer patients, including uterine fibroid embolization, prostate artery embolization, hemorrhoid embolization, and knee embolization.

He has been featured in The Daily Mail and has authored numerous publications in national and international medical journals, including Radiographics and Cardiovascular and Interventional Radiology. He also presents at national conferences.

He received the 2025 Cure Ocular Melanoma Vision of Hope award from the Melanoma Research Foundation for his extensive work with uveal melanoma patients, including immunoembolization and oncolytic virus administration.

To schedule an appointment with Dr. Kirk, call the office or request one online today. 

Kevin Burns, MD, is an interventional radiologist at Minimally Invasive Medical Group, which has offices in Lake Forest, Mission Viejo, and Irvine, California. He holds board certification in interventional radiology and offers specialized care in less invasive, image-led treatments at Providence Mission Hospital and Leonard Cancer Institute. He specializes in genicular artery embolization and genicular nerve ablation for the treatment of conditions such as arthritis pain and frozen shoulder, and as an alternative to surgical procedures such as knee replacement.

Additionally, Dr.  Burns excels in techniques such as tumor embolization and ablation for cancer care and also provides relief from pain associated with bone tumors. He's also well-versed in performing kyphoplasty to alleviate pain from spinal fractures, uterine fibroid embolization, prostate artery embolization for treating enlarged prostate (BPH), removing blood clots and pulmonary embolisms, venous rebuilding, and IVC filter extraction. 

Dr. Burns completed his undergraduate studies in biochemistry and molecular biology at Brown University. He received his medical education at New York University School of Medicine and did his residency at Montefiore Medical Center/Albert Einstein College of Medicine. He further honed his skills in interventional radiology and oncology at the MD Anderson Cancer Center. 

As a Laguna Niguel native, Dr. Burns is eager to bring his specialized knowledge in less invasive treatments to the community in Southern Orange County.

Dr. Theodore K. Yang received his undergraduate degree at The University of Texas at Austin in physics and went on to work as a medical physicist before attending medical school. He received his medical degree and completed residency training in radiation oncology at The University of Texas Medical Branch at Galveston (UTMB).

He then joined the UTMB faculty specializing in head and neck therapy and brachytherapy. Board certified in therapeutic radiology, Dr. Yang has practiced radiation oncology Houston since 1984.

Dr. Yang is a member of professional medical societies, including the Harris County Medical Society, Texas Medical Association, American Medical Association, ASTRO (American Society for Therapeutic Radiology and Oncology) and CADAH (Chinese American Doctors Association of Houston). 

Nimi Tuamokumo, MD MPH graduated cum laude from Princeton University with a Bachelor of Arts degree in the Psychology. She received her M.D. from Yale University School of Medicine in New Haven, CT and her MPH degree from Harvard School of Public Health.

Dr. Tuamokumo completed an internship in the Department of Medicine at Mount Auburn Hospital in Cambridge, MA and a residency in Radiation Oncology at the Harvard Radiation Oncology Program. Dr. Tuamokumo specializes in Intensity Modulated Radiation Therapy (IMRT), Image Guided Radiation Therapy (IGRT), Stereotactic Body Radiation Therapy (SBRT).

She is experienced in treating all types of malignancies. Dr. Tuamokumo has been with GHRO since completion of her residency in 2008. She has received many awards, including the National Institutes of Health Careers in Medicine Fellowship, American Cancer Society Outstanding Thesis Award, New England Cancer Society’s Daland Resident Award, NIH Cancer Education Grant, Etta S. Chidsey Award in Cancer Research.

Dr. Tuamokumo has published articles and given presentations on a range of topics including breast cancer, prostate cancer, pediatric cancer, and gastric cancer. She is a member of the Texas Medical Association, the American Society of Clinical Oncology, and the American Society for Therapeutic Radiology and Oncology. 

Medical School: Loyola University Stritch School of Medicine – Chicago, IL

Internal Medicine: Exempla St. Joseph Hospital – Denver, CO

Diagnostic Radiology: University of Colorado – Aurora, CO

Interventional Radiology: Medical College of Wisconsin – Milwaukee, WI

American Board of Radiology 2016

Tony Brown, MD, is the Medical Director and a board-certified vascular and interventional radiologist specializing in pelvic stabilization and kyphoplasty at RIA Endovascular. Dr. Brown sees patients at the practice's location in Greenwood Village, Colorado.

He pursued medical school at Loyola University Stritch School of Medicine in Chicago, Illinois, followed by an internship in Internal Medicine at Exempla St. Joseph Hospital in Denver, Colorado, and a residency in Diagnostic Radiology at the University of Colorado in Aurora.

Dr. Brown completed his fellowship in Interventional Radiology at the Medical College of Wisconsin in Milwaukee. 

He has contributed to a number of publications and presentations, such as:

• Gipson MG, Smith, MT, Durham JD, Brown A, Johnson T, Ray CE Jr, Gupta RK, Kondo KL, Rochon PJ, Ryu RK. Intravascular US-Guided Portal Vein Access: Improved Procedural Metrics during TIPS Creation. Journal of Vascular and Interventional Radiology, 2016 Aug; 27(8):1140-7. PMID: 26852944
• Charles E Ray, Anthony C Brown, Tyler J Green, Helena Winston, Sara M Kreidler, Deborah H Glueck, Paul J Rochon. Survival outcomes in patients with advanced hepatocellular carcinoma treated with drug-eluting bead chemoembolization. American Journal of Roentgenology. 2015; 204: 440-447. PMID: 25615768
• Brown A, Malden E, Kugelmas M, Kortz E. Diagnosis of pancreatic duct-portal vein fistula; a case report and review of the literature. Journal of Radiology Case Reports. 2014 March; 8(3):31-38. PMID: 24967026

In 2016, Dr. Brown obtained board certification from the American Board of Radiology (ABR).

He is committed to caring for patients at RIA Endovascular and truly provides exceptional care.