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Education

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

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

Internship

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

Residency

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

Fellowship

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

Board Certification

American Board of Radiology 1997

Education

Tufts University School of Medicine, Boston, MA 2006 – 2010
M.D., Doctor of Medicine

Internship

St. Luke’s – Roosevelt Hospital Center, New York, NY 2010 – 2011 Columbia University College of Physician and Surgeons
Internal Medicine Preliminary Year Internship

Residency

Boston University Medical Center, Boston, MA 2011 – 2015
Diagnostic Radiology Residency

Fellowship

Stanford University Medical Center, Stanford, CA 2015 – 2017 Diagnostic Neuroradiology Fellowship

Board Certification

American Board of Radiology 2015

 

Education

Medical School:  University of New Mexico School of Medicine – Albuquerque, NM

Internship

Transitional: Providence Sacred Heart Medical Center – Spokane, WA

Residency

Diagnostic Radiology: Baylor University Medical Center – Dallas, TX

Fellowship

Breast Imaging: University of Colorado Anschutz Medical Campus – Denver, CO

Board Certification

American Board of Radiology 2016

 

Education

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

Internship

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

Residency

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

Fellowships

Neuroradiology: UCSF Neuroradiology – San Francisco, CA

Board Certifications

American Board of Radiology

 

Education

Medical School: University of Colorado School of Medicine – Aurora, CO

Internship

Internal Medicine: Basset Medical Center – Cooperstown, NY

Residency

Diagnostic Radiology: University of Colorado – Aurora, CO

Fellowship

Interventional Radiology: Mayo Clinic – Rochester, MN

Education

Medical School: Oregon Health & Science University – Portland, OR

Residency

Radiology Resident: Duke University Medical Center, Durham, NC

Fellowship

Chest & Body Radiology: Duke University Medical Center, Durham, NC

Board Certification

American Board of Radiology 2021

 

Education

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

Internship

Internal Medicine: Cook County Hospital – Chicago, IL

Residency

Internal Medicine: Cook County Hospital – Chicago, IL

Radiology: Cook County Hospital – Chicago, IL

Fellowship

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

Board Certification

American Board of Radiology 2003

Recertification 2013

Education

Medical School:  University of Washington – Seattle, WA

Internship

Surgery/Medicine: Swedish Medical Center – Seattle, WA

Residency

Diagnostic Radiology: University of Washington – Seattle, WA

Fellowship

Vascular/Interventional Radiology: University of Washington – Seattle, WA

Board Certifications

American Board of Radiology 2006

Vascular and Interventional Radiology Certificate of Added Qualification 2008

Todd Kooy, MD, is a highly regarded board-certified vascular and interventional radiologist serving patients at RIA Endovascular in Greenwood Village, Colorado. Dr. Kooy specializes in treating vascular issues using cutting-edge interventional radiology procedures that offer patients benefits like less pain, faster recovery times, and minimized scarring.

Dr. Kooy attended the University of Washington in Seattle, where he earned his medical degree, setting the stage for his medical career.

Continuing his medical training, Dr. Kooy completed a comprehensive internship in surgery and medicine at Swedish Medical Center in Seattle. His dedication and passion for the field prompted Dr. Kooy to pursue a diagnostic radiology residency at the University of Washington. This rigorous program equipped him with a strong foundation in radiology.

Dr. Kooy completed a fellowship at the University of Washington in Seattle to refine his expertise in vascular and interventional radiology. He holds board certifications from the American Board of Radiology and a Vascular and Interventional Radiology Certificate of Added Qualification (CAQ). These certifications highlight Dr. Kooy’s commitment to providing his patients with advanced care.

With a dedication to ongoing learning and delivering superior patient care, Dr. Kooy strives to give each patient the personalized treatment they deserve at RIA Endovascular.

Education

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

Residency

Diagnostic Radiology: University of California San Diego – San Diego, CA

Internship

General Surgery: Exempla St. Joseph Hospital – Denver, CO

Fellowship

Vascular and Interventional Radiology:
University of Washington – Seattle, WA

Cosette Stahl, DO, practices as a vascular and interventional radiologist at the RIA Endovascular location in Greenwood Village, Colorado.

Dr. Stahl studied medicine at the Medical School of the Chicago College of Osteopathic Medicine in Downers Grove, Illinois, driven by her intellectual curiosity and a desire to serve the community. During her medical training, she developed an interest in anatomy and minimally invasive procedures, resulting in her specializing in interventional radiology.

She completed a residency in diagnostic radiology at the University of California San Diego and interned in general surgery at Exempla St. Joseph Hospital in Denver, Colorado. Dr. Stahl also completed a fellowship in vascular and interventional radiology at the University of Washington in Seattle.

Dr. Stahl is licensed by several state medical boards across the country, including Texas, Colorado, Kansas, Nebraska, and Hawaii. She also holds licenses from the Osteopathic Medical Board of California, the Washington State Department of Health, and the American Board of Radiology in Diagnostic Radiology.

Her publications cover topics like radiation protection during fluoroscopy and imaging for intrathoracic mediastinal thyroid goiters. Dr. Stahl is excited by the potential of interventional radiology to interact with all medical specialties.

In her free time, Dr. Stahl enjoys the great outdoors of Colorado as an avid skier, hiker, and cycler, sometimes in the company of her family and poodle. She is also interested in cooking and yoga.

 

Education

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

Internship

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

Residency

Diagnostic Radiology: University of Colorado – Aurora, CO

Fellowship

Interventional Radiology: Medical College of Wisconsin – Milwaukee, WI

Board Certification

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.

Education

Medical School:  Case Western Reserve University – Cleveland, OH

Residency

Diagnostic Radiology: University of Utah – Salt Lake City, UT

Fellowship

Vascular and Interventional Radiology: Medical College of  Wisconsin – Milwaukee WI

Board Certifications

Board Certified Diagnostic Radiology 2012

CAQ-Vascular and Interventional Radiology 2014

Y90 Authorized User – State of Colorado 2016

Registered Physician in Vascular Interpretation (RPVI) 2018

Greg Martin, MD, is a board-certified vascular and interventional radiologist providing exceptional care at RIA Endovascular in Greenwood Village, Colorado. Dr. Martin’s dedication to patient well-being and innovative solutions has made him an invaluable asset to the team.

Dr. Martin attended medical school at Case Western Reserve University in Cleveland, Ohio. After earning his medical degree, he undertook a rigorous residency in diagnostic radiology at the University of Utah in Salt Lake City. 

Dr. Martin’s commitment to excellence in interventional radiology encouraged him to complete a vascular and interventional radiology fellowship at the Medical College of Wisconsin in Milwaukee, further enhancing his expertise.

With multiple board certifications, including in diagnostic radiology and interventional radiology, and a Certificate of Added Qualification (CAQ) in vascular and interventional radiology, Dr. Martin is uniquely qualified to offer patients a comprehensive range of cutting-edge treatments and procedures. He is also a Y90 Authorized User in Colorado and became a Registered Physician in Vascular Interpretation (RPVI) in 2018, highlighting his dedication to staying at the forefront of his field.

Dr. Martin’s areas of expertise include complex vascular interventions, ensuring patients benefit from the latest medical advancements. His unwavering commitment to patient care, combined with his extensive education and certifications, makes him an invaluable member of the RIA Endovascular team, providing patients with exceptional medical care and innovative solutions.

 

Education

Medical School: The Ohio State University College of Medicine – Columbus, Ohio

Internship

Internal Medicine: Riverside Methodist Hospital – Columbus, OH

Residency

University of Cincinnati College of Medicine – Cincinnati, OH

Fellowship

Mallinckrodt Institute of Radiology – St. Louis, Missouri

Board Certification

American Board of Radiology – Diagnostic Radiology Board Certification
American Board of Radiology – Interventional Radiology Board Certification

Awards

Galen Award for Academic Excellence in the Anatomical Sciences, Wright State University 2002

Brian Ravert, MD, practices as a vascular and interventional radiologist with RIA Endovascular in Greenwood Village and Windsor, Colorado.

After studying physics during undergrad, Dr. Ravert graduated from The Ohio State University College of Medicine in Columbus, Ohio. With a focus on the intellectual challenges and patient service potential of medicine, Dr. Ravert interned in internal medicine at Riverside Methodist Hospital, also located in Columbus, Ohio. He then completed his residency at the University of Cincinnati College of Medicine.

Dr. Ravert completed a fellowship at the Mallinckrodt Institute of Radiology in St. Louis, Missouri. He is board-certified by the American Board of Radiology in diagnostic radiology and interventional radiology. He received the Galen Award for Academic Excellence in the Anatomical Sciences from Wright State University.

In his practice as an interventional radiologist, Dr. Ravert focuses on analytical and procedural techniques, as well as the importance of direct patient contact and high-quality patient care.

Outside of work, Dr. Ravert spends time with his family, reads, and unwinds by playing the guitar.

Education

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

Internship

Internal Medicine:  University of Nebraska Medical Center – Omaha, NE 

Residency 

Radiology: University of Nebraska Medical Center – Omaha, NE

Fellowship

Vascular and Interventional Radiology: University of New Mexico Hospital – Albuquerque, NM

  Sean Walker, MD, is a board-certified vascular and interventional radiologist in Denver, Colorado. Dr. Walker is highly trained and has more than a decade of experience caring for patients of all ages.
He earned his medical degree from the David Geffen School of Medicine at the University of California, Los Angeles, and completed an internship in internal medicine at the University of Nebraska Medical Center in Omaha. 
Dr. Walker stayed in Omaha to complete a residency in radiology at the University of Nebraska Medical Center and then relocated to Albuquerque, New Mexico, for a fellowship in vascular and interventional radiology at the University of New Mexico Hospital.
He has published an array of research in medical journals and has presented his findings at medical conventions nationwide.
Dr. Walker enjoys staying active and spending time with family and friends when he’s not at the office. 
He looks forward to maximizing patients’ quality of life and compassionately welcomes them to one of the multiple hospital sites he covers in Denver, Colorado.

Education

Medical School: New York Medical College – Valhalla, NY

Internship

Preliminary Medicine: Greenwich Hospital – Greenwich, CT

Residency

Diagnostic Radiology: University of Colorado – Aurora, CO

Fellowship

Interventional Radiology: University of Colorado – Aurora, CO

Board Certification

American Board of Radiology 2018

Matt Brown, MD, is a board-certified vascular and interventional radiologist at RIA Endovascular. Dr. Matt Brown sees patients at the practice's Greenwood Village, Colorado office.

He pursued medical school at New York Medical College in Valhalla, New York, followed by an internship in Preliminary Medicine at Greenwich Hospital in Greenwich, Connecticut.

He completed his residency in Diagnostic Radiology at the University of Colorado in Aurora and a fellowship in Interventional Radiology at the University of Colorado.

In 2018, Dr. Matt Brown obtained board certification from the American Board of Radiology (ABR). He has contributed to many presentations and publications, like:

• Brown MA, Nevrekar D, Chung JH. Factors leading to precipitation of peri-breast implant gas following airline travel to high altitude. IRB approved retrospective review of 390 CT scans. American Journal of Roentgenology. 2015;205: 971-975. 10.2214/AJR.15.15031
• DePopas E, Brown MA Varicose Veins and Lower Extremity Venous Insufficiency. Semin intervent Radiol 2018; 35(01): 056-061 DOI: 10.1055/s-0038-1636522
• Bakdash K, Schramm KM, Annam A, Brown MA et al. Complication of Renal Biopsy. Semin Intervent Radiol 2019; 36:97-103 PMID 31123379

Dr. Matt Brown is kind and team-oriented. His favorite part about working with the team at RIA is his colleagues and patients. Not only is the team technically great, but he says they’re also genuine and caring people.

He also loves to see how happy the patients are with recovery time and their results after procedures. Treating conditions through a tiny incision and having the patients say, “That’s it?” afterward never gets old.

Dr. Matt Brown enjoys spending as much time as possible outside in his free time with his wife, Amber, their son, and their lazy, 120-pound mutt, Morris. He also has a 1984 Toyota 4X4 truck that he is slowly fixing up.

Education

Medical School: University of Colorado School of Medicine – Denver, ColoradoInternshipInternal Medicine: University of Wisconsin – Madison, Wisconsin

Surgery: University of Colorado – Denver, Colorado

Residency

Diagnostic and Interventional Radiology: University of Colorado – Denver, Colorado

Fellowship

Vascular and Interventional Radiology: University of Colorado – Denver, Colorado

Board Certifications

American Board of Radiology: Interventional Radiology

American Board of Radiology: Diagnostic Radiology

 

Tyler Green, MD, is a board-certified vascular and interventional radiologist at RIA Endovascular in Greenwood Village, Colorado. Dr. Green is committed to providing outstanding care to patients seeking solutions for vascular issues and interventional radiology procedures, such as prostate artery embolization and minimally invasive vein treatments.

Dr. Green earned his medical degree from the University of Colorado School of Medicine in Denver, Colorado. He continued his medical training at the University of Wisconsin in Madison, where he completed an internal medicine internship. Dr. Green also finished a surgical internship at the University of Colorado.

Dr. Green’s dedication and passion for radiology encouraged him to return to the University of Colorado to pursue a diagnostic and interventional radiology residency. Dr. Green also completed a fellowship at the same university to refine his specialization. He has since authored numerous publications, presentations, and articles.

With two board certifications from the American Board of Radiology in interventional radiology and diagnostic radiology, Dr. Green is an invaluable asset to patients at RIA Endovascular. His dedication to ongoing learning and providing superior patient care shines through in every patient interaction. 

Dr. Green is thrilled to offer patients state-of-the-art treatments and unwavering support, ultimately improving the quality of life for those under his care.

Education

Medical School:  University of Pennsylvania – Philadelphia, PA

Internship

Transitional: St. John’s Mercy Medical Center – Creve Coeur, MO

Residency

Diagnostic Radiology: Mallinckrodt Institute of Radiology, Washington University – St. Louis, MO

Fellowship

Interventional Radiology: Medical College of Wisconsin – Milwaukee, WI

Board Certification

American Board of Radiology 2010

Certificate of Added Qualification for Vascular and Interventional Radiology 2012

  William Grande, MD, is a board-certified vascular and interventional radiologist. Dr. Grande delivers exceptional care to patients at the practice's location in Greenwood Village, Colorado. He helps those experiencing such ailments as peripheral artery disease, deep vein thrombosis (DVT), and many other conditions.

Dr. Grande earned his medical degree from the University of Pennsylvania in Philadelphia. After finishing medical school, he pursued a transitional internship at St. John's Mercy Medical Center in Creve Coeur, Missouri. His dedication to the field led him to a residency in diagnostic radiology at the Mallinckrodt Institute of Radiology, Washington University in St. Louis, Missouri. 

Dr. Grande further honed his skills through an interventional radiology fellowship at the Medical College of Wisconsin in Milwaukee.

As a leader in vascular interventional radiology, Dr. Grande has authored numerous medical articles, publications, and presentations. He achieved board certification from the American Board of Radiology nearly 15 years ago, solidifying his expertise in the field. Dr. Grande also obtained a Certificate of Added Qualification (CAQ) for Vascular and Interventional Radiology in 2012, showcasing his commitment to providing advanced patient care. 

With this impressive educational background and certifications, Dr. Grande continues to excel at RIA Endovascular. He looks forward to working with new patients and delivering personalized care through cutting-edge treatments and modern techniques.  

Education

Medical School:  University of Chicago Pritzker School of Medicine – Chicago, IL

MBA: University of Chicago Graduate School of Business – Chicago, IL
Internship

Transitional: Resurrection Hospital – Chicago, IL

Residency

Diagnostic Radiology: University of Washington Medicine – Seattle, WA

Fellowship

Interventional Radiology: University of Washington Medicine – Seattle, WA

Board Certification

American Board of Radiology 2010

Peter Stratil, MD, MBA, practices as a vascular interventional radiologist from the RIA Endovascular location in Greenwood Village, Colorado. Dr. Stratil performs minimally invasive procedures, treating conditions like cancer and vascular disease.

Dr. Stratil earned his medical degree from the University of Chicago Pritzker School of Medicine in Chicago, Illinois, and his MBA from the University of Chicago Graduate School of Business. In addition to interpreting radiology studies, he is also skilled in business development for radiology practice.

After a transitional internship at Resurrection Hospital in Chicago, Illinois, Dr. Stratil completed a residency in diagnostic radiology and a fellowship in interventional radiology at the University of Washington Medicine in Seattle.

Dr. Stratil is board-certified by the American Board of Radiology. He has co-authored publications on embolotherapy for visceral trauma, vascular imaging, pediatric radiology, and giant cell tumors. He has also presented on the business of radiology before the Association of University Radiologists.

Education

Medical School:  New York Medical College – Valhalla, NY

Internship

Exempla St. Joseph Hospital – Denver, CO

Residency

Diagnostic Radiology: Mallinckrodt Institute of Radiology, Washington University School of Medicine – St. Louis, MO

Fellowship

Interventional Radiology: University of Colorado School of Medicine – Aurora, CO

Board Certifications

American Board of Radiology 2010

Certificate of Added Qualification for Vascular and Interventional Radiology 2012

Matthew Gipson, MD, is a board-certified vascular and interventional radiologist at RIA Endovascular.

He pursued medical school at the New York Medical College in Valhalla, New York, followed by an internship at Exempla St. Joseph Hospital in Denver, Colorado. 

He completed a residency in Diagnostic Radiology at the Mallinckrodt Institute of Radiology, Washington University School of Medicine in St. Louis, Missouri, and a fellowship in Interventional Radiology at the University of Colorado School of Medicine in Aurora.

In 2010, Dr. Gipson received his board certification from the American Board of Radiology. In 2012, he obtained a Certificate of Added Qualification (CAQ) for Vascular and Interventional Radiology.

Dr. Gipson has also contributed to numerous publications and presentations, such as:

• Gipson M, Cummings KW, Hurth KM. Bronchial Atresia. Radiographies. 2009 SepOct; 29(5): 1531-5 
• Gipson, MG. Percutaneous Management of Lymphoceles after Renal Transplantation. Semin intervent Radio12013; 30(2): 215-218
• Gipson MG, Smith MT. Endovascular Therapies for Primary PostPartum Hemorrhage: Techniques and Outcomes. Semin intervent Radiol2013 Dec;30(4):333-339.
• Christenson BM, Gipson MG, Smith MT. Pelvic Vascular Malformations. Semin intervent Radio!. 2013 Dec;30(4):364-371.
• M.G. Gipson Celiac Disease and Generalized Lymphadenopathy: ot Always Ominous. American College of Physicians – Colorado Associates Scientific Meeting, Denver, CO 2006.

Knowledgeable and compassionate, Dr. Gipson aims to provide outstanding care for each and every patient he treats.