We are committed to providing outstanding care through utilizing state-of-the-art technology and offering sub-specialty expertise to maximize the effectiveness of diagnostic and therapeutic imaging services offered at this facility. Our radiologists routinely deploy new techniques and protocols that closely adhere to the latest radiation safety guidelines which continue to evolve throughout the healthcare community. The Department of Radiology conducted approximately 220,000 imaging studies in 2017, with expectations that this volume figure will continue to rise in the foreseeable future as new services and imaging technology are introduced.

Hours of Operation

Main Hospital, Pavilion A, 777 Bannock Street, Denver, CO 80204

Breast Imaging

Location: Basement, Main Hospital (Pav. A)

Hours: Monday-Friday: 7 a.m. - 3:30 p.m.


Computed Tomography (CT)

Location: First Floor, Main Hospital (Pav. A)

Hours: Monday-Friday: 7:30 a.m. - 6:30 p.m.

Saturday: 10 a.m. - 5 p.m.


Diagnostic Radiology

Location: First Floor, Main Hospital (Pav. A)

Hours: Monday-Friday: 7 a.m. - 3:30 p.m.


Interventional Radiology (IR)

Location: First Floor, Main Hospital (Pav. A)

Hours: Monday-Friday: 7 a.m.- 6 p.m.


Magnetic Resonance Imaging (MRI)

Location: First Floor, Main Hospital (Pav. A)

Hours: Monday-Friday: 6:30 a.m. - 10 p.m.

Saturday: 7 a.m. - 7 p.m.


Nuclear Medicine

Location: Basement, Main Hospital (Pav. A)

Hours: Monday-Friday:6:30 a.m. - 3 p.m.


Wellington E. Webb Center for Primary Care Building,

Pavilion G, 301 Sixth Avenue, Denver, CO 80204


Bone Densitometry (DXA)

Location: Basement, Webb Center (Pav. G)

Hours: Wednesday-Thursday: 7:30 a.m.-3 p.m.


Diagnostic Radiology

Location: Basement, Webb Center (Pav. G)

Hours: Monday-Friday: 8 a.m. - 5 p.m.


Ultrasound (US)

Location: Basement, Webb Center (Pav. G)

Hours: Monday-Friday: 7 a.m. - 5 p.m.


Federico F. Peña Family Health Center, 1339 S. Federal, Denver, CO 80219


Diagnostic Radiology

Hours: Monday-Friday: 7:30 a.m.-9 p.m.

Saturday-Sunday: 9 a.m.-5:30 p.m.


Our Team

The radiologists of Denver Health have received outstanding training, and many hold advanced certifications.  These individuals are all board-certified by the American Board of Radiology, participate in extensive continuing education endeavors, and have active teaching roles through their academic affiliations through the University of Colorado School of Medicine. The goal of our radiologists at Denver Health is to provide imaging services reflecting the highest standards of clinical excellence delivered in a compassionate, respectful environment.

Ronald R. Townsend, M.D. (Director of Radiology)

Dr. Townsend is Denver Health’s Radiology Director of Service, overseeing all aspects of the Radiology Department. He is interested in efforts to optimize quality and safety in healthcare in general, with a focus on medical imaging. Dr. Townsend is actively involved in various hospital governance activities as reflected through his participation in Denver Health’s Trauma Council, Medical Staff Executive Committee and Executive Committee for Patient Safety and Quality.

He earned his undergraduate degree summa cum laude in biology and chemistry from the University of California at Irvine and received a Master’s of Biomedical Sciences from Washington University in St. Louis, Missouri. Dr. Townsend earned his medical degree from Washington University School of Medicine. He completed his residency and fellowship training at the University of California in San Francisco.  Dr. Townsend is a member of the Phi Beta Kappa and Alpha Omega Alpha honor societies.

Prior to his career at Denver Health, Dr. Townsend directed the ultrasound/body imaging services at the University of Colorado Hospital; he was the director of the Diagnostic Radiology Residency Program from 1991 – 2003. Dr. Townsend’s areas of expertise include cross-sectional imaging (ultrasound, CT, MRI) of the chest, abdomen, and pelvis. His particular areas of focus include genitourinary imaging and trauma imaging. He continues to be very active in teaching medical imaging to future radiologists as well as other healthcare providers.

David L. Symonds, M.D. (Associate Director of Radiology)

Dr. Symonds has been a member of Denver Health’s attending faculty for the Department of Radiology since 1989, and now serves as Associate Director for this department. Dr. Symonds received his undergraduate degree in chemistry from University of Washington in Seattle, Washington, and his medical degree from Cornell University in New York. He completed his fellowship in neuroradiology and magnetic resonance imaging at the University of Colorado Health Sciences Center. He is an assistant clinical professor at the University of Colorado School of Medicine. He is board-certified by the American Board of Radiology.

For a full list of provider bios and details, use our Find a Provider Search.

Radiation Safety Practices


At Denver Health, we understand that radiation exposure is a concern to patients and clinicians. The Radiology Department at Denver Health is committed to following recommended radiation safety guidelines as well as the principles of ALARA (As Low AS Reasonably Achievable).

Denver Health has been making contributions to medical and surgical advances by pioneering innovations in patient care, research and education for more than 100 years. The Department of Radiology is continually preparing for the future by participating in active research projects to identify new methods of optimizing radiologic techniques and to reduce radiation dosages. Additionally, we are implementing innovative processes for the tracking, notifying and reporting of cumulative radiation dose information.

Key guidelines to minimize radiation exposure include:

  • Imaging studies only performed when there is the possibility of a clear diagnostic benefit

  • Imaging studies strategically focused to include only the specific area of interest

  • Utilizing the latest advances in CT equipment and protocols to achieve diagnostic quality images with the lowest radiation exposure

  • Imaging techniques individualized for each patient

  • Use of advanced radiation dose modulation techniques to measure the patient’s size and to deliver a specific radiation dose unique to the patient’s body build

  • Use of weight-based contrast medium injection protocols that are specific to the patient to optimize patient safety, comfort and image quality

How is ionizing radiation reported?

Radiation dose to the body is reported in units known as milliSeverts (mSv).  The small amount of background radiation a human will typically receive every year is somewhere in the range of 3 – 5 mSv.