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

Radiology Resident: Duke University Medical Center, Durham, NC

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

American Board of Radiology 2021

Medical School: Uniformed Services University of the Health Sciences – Bethesda, MD

Diagnostic Radiology from San Antonio Uniformed Services Health Education Consortium – Sam Houston, TX

Hospital for Special Surgery – New York, NY

American Board of Radiology 2004

Benjamin Atchie, DO, one of the gifted neurointerventional surgeons at RIA Neurovascular in Englewood, Colorado. He is board-certified in diagnostic radiology with a certificate of added qualification in neuroradiology. 

Dr. Atchie completed his Doctor of Osteopathic Medicine from the New York College of Osteopathic Medicine, in Westbury, New York. He went on to serve his internship at New York University Langone Hospital, in Brooklyn, New York, and a residency in diagnostic radiology at the Robert Wood Johnson Barnabas Health, Saint Barnabas Medical Center in Livingston, New Jersey. 

Dr. Atchie has also participated in several prestigious fellowship programs, including interventional radiology, interventional neuroradiology, and diagnostic neuroradiology at the University of Texas Southwestern Medical Center in Dallas. He has contributed to several publications in peer-reviewed journals. 

Dr. Atchie is committed to helping his patients improve their overall health. He provides highly specialized neurointerventional procedures to address issues, including stroke, aneurysm, and carotid stenosis. His compassionate, patient-focused approach helps him to educate and empower patients to understand their health and treatment options. 

Medical School:  University of South Florida – Tampa, FL

MBA: The Goizueta Business School, Emory University – Atlanta, GA

Internal Medicine: Massachusetts General Hospital – Boston, MA

Diagnostic Radiology: Massachusetts General Hospital – Boston, MA

One year Fellow-equivalent training in Neuroradiology – Massachusetts General Hospital – Boston, MA

Pediatric Radiology: The Children’s Hospital – Denver, CO

American Board of Radiology 2005

Certification of Added Qualification, Pediatric Radiology 2009

Medical School:  Albert Einstein College of Medicine – New York, NY

University of Colorado Health Sciences Center – Denver, CO

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

Ultrasound and CT:  University of Colorado Health Sciences Center – Denver, CO

Angiography and Interventional: Denver Veterans Administration, University of Colorado Hospital – Denver, CO

American Board of Radiology 1983

Medical School: University of Pittsburgh School of Medicine – Pittsburgh, PA 

Medical Internship: University of Pittsburgh Medical Center – Pittsburgh, PA 

Department of Radiology and Biomedical Imaging: Yale New Haven Health – New Haven, CT

Neuroradiology: Yale New Haven Health – New Haven, CT 

Medical School:  Tufts University School of Medicine – Boston, MA

Transitional: Boston University, Brockton Hospital – Boston, MA

Diagnostic Radiology: Baystate Medical Center, Tufts University Western Campus – Springfield, MA

Nuclear Medicine:  Harvard Medical School – Boston, MA

American Board of Radiology 2006

Medical School: University of California Davis School of Medicine – Sacramento, CA

Surgery: University of California Davis Health Systems – Sacramento, CA

Diagnostic Radiology: University of North Carolina Hospitals – Chapel Hill, NC

Neuroradiology: Duke University – Durham, NC

American Board of Radiology 2015

Medical School:  University of Cincinnati College of Medicine – Cincinnati, OH

Internal Medicine: Rush-Presbyterian-St. Luke’s Medical Center – Chicago, IL

Diagnostic Radiology: Tulane University Medical Center – New Orleans, LA

Neuroradiology/Endovascular Surgical Neuroradiology: Mallinckrodt Institute of Radiology,

Washington University – St. Louis, MO

American Board of Radiology 1994

Certificate of Added Qualifications in Neuroradiology 1996

Donald Frei, MD, is one of the board-certified neurointerventional surgeons at RIA Neurovascular in Englewood, Colorado. 

Dr. Frei earned his Doctor of Medicine at the University of Cincinnati College of Medicine, in Cincinnati, Ohio. He served his internship at Rush-Presbyterian-St. Luke's Medical Center in Chicago, before continuing his training with a diagnostic radiology residency at Tulane University Medical Center in New Orleans. 

Dr. Frei went on to complete rigorous fellowship training in neuroradiology / endovascular surgical neuroradiology at Washington University's Mallinckrodt Institute of Radiology in St. Louis. Dr. Frei has also contributed to several articles in peer-reviewed journals. In addition to his certification through the American Board of Radiology, he also has a certificate of added qualifications in neuroradiology.

He provides a wide range of neurointerventional services and has specific interest in the endovascular treatment of acute stroke, intracranial aneurysms, and extracranial revascularization techniques. He also offers minimally invasive procedures, including catheter-directed stroke intervention, angioplasty, stent revascularization, and treatments for cerebral aneurysms and arteriovenous malformations (AVMs).

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

Diagnostic Radiology: Vanderbilt University Medical Center – Nashville, TN

Nuclear Medicine:  Vanderbilt University Medical Center – Nashville, TN

American Board of Radiology 1999

Caroline Tomas, MD, is a highly skilled and board-certified radiologist at Invision Sally Jobe, where she provides exceptional care to patients in Denver, Colorado. Specializing in abdominal imaging and musculoskeletal radiology, Dr. Tomas offers a comprehensive, patient-centered approach to diagnosing and managing complex medical conditions.

Dr. Tomas earned her medical degree from the Chicago Medical School at Rosalind Franklin University in North Chicago, Illinois. She completed her diagnostic radiology residency at the University of Colorado in Aurora, Colorado, and went on to complete an abdominal imaging fellowship at the prestigious Mallinckrodt Institute of Radiology at Washington University in St. Louis, Missouri. 

Additionally, Dr. Tomas has completed mini fellowships in neuroradiology and musculoskeletal imaging, further enhancing her expertise in advanced imaging techniques.

Throughout her career, Dr. Tomas has contributed to medical research, with publications in leading medical journals on topics ranging from vertebral body fractures to Alzheimer’s disease. She has presented her findings at major conferences, including the Radiological Society of North America (RSNA) and the Society of Skeletal Radiology.

Dr. Tomas is an active member of several professional organizations, including the American College of Radiology, the Radiological Society of North America, and the Colorado Radiology Society. She is also a member of the prestigious Alpha Omega Alpha Honor Medical Society, reflecting her commitment to excellent patient care and medical education.

In her free time, Dr. Tomas enjoys hiking, skiing, and spending quality time with family and friends. She is also passionate about cooking and exploring the outdoors.

Medical School: University of Utah School of Medicine – Salt Lake City, UT

Internal Medicine: University fo Utah – Salt Lake City, UT

Diagnostic Radiology: Hartford Hospital – Hartford, CT

Diagnostic Neuroradiology: Mallinckrodt Institute of Radiology, Barnes-Jewish Medical Center – St. Louis, MO

Musculoskeletal Radiology: University of Alabama at Birmingham – Birmingham, AL

American Board of Radiology 2009

Medical School:  Rutgers New Jersey Medical School in Newark, New Jersey

Rhode Island Hospital, affiliated with Brown University’s Alpert Medical School in Providence, Rhode Island

Brigham and Women’s Hospital in Boston, Massachusetts.

American Board of Radiology

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 Colorado Health Sciences Center School of Medicine – Denver, CO

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

Diagnostic Radiology: Bridgeport Hospital, Yale New Haven Health – Bridgeport, CT

Abdominal Imaging and Intervention: Brigham & Women’s Hospital – Harvard Medical School, Boston, MA

American Board of Radiology 2007

Medical School:  Rocky Vista University College of Osteopathic Medicine – Parker, CO

Surgical Internship: Exempla St. Joseph Hospital – Denver, CO

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

American Board of Radiology 2018

Medical School:  Medical College of Wisconsin – Milwaukee, WI

Transitional: Aurora St. Luke’s Medical Center – Milwaukee, WI

Radiology: University of Arizona – Tucson, AZ

Pediatric Radiology: Seattle Children’s Hospital – Seattle, WA

American Board of Radiology 2012

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

Transitional Internship: Emory University – Atlanta, Georgia

Diagnostic Radiology: Emory University – Atlanta, GA

Body Imaging Fellowship: University of Washington – Seattle, WA

American Board of Radiology 2008