RAO – Expanding to Provide Care to More Patients Than Ever

Drs. Jiminez, Kalra, Villanueva, Quiroz and Cummings

Drs. Jiminez, Kalra, Villanueva, Quiroz and Cummings

As part of an ongoing effort to provide patients and referring clinicians with the quickest and most accurate diagnoses and services, RAO has added five new radiologists to our care team, boosting the number of doctors to 23. Having an enhanced team of qualified and experienced radiologists who subspecialize in essential diagnostic areas enables RAO to assist more doctors and patients with medical inquiries and promote a superior quality of care. 

RAO is honored to welcome: 

Dr. Alexander Quiroz-Casian

Dr. Alexander Quiroz-Casian

Dr. Alexander Quiroz-Casian - Diagnostic Radiologist Dr. Alexander Quiroz-Casian subspecializes in Body Imaging, the study of cross-sectional imaging techniques to diagnose issues in organs throughout the body. Dr. Quiroz-Casian earned his medical degree at the School of Medicine at Universidad LA SALLE in Mexico City, and served residencies in Diagnostic Radiology and General Surgery at the University of Miami’s Jackson Memorial Hospital. He garnered a Fellowship in Body Imaging from MedStar Georgetown University Hospital. 


Dr. Luis Jiminez – Dr. Luis Jiminez is Board Certified in Diagnostic Radiology with a subspecialty in Nuclear Medicine. Dr. Jiminez earned his medical degree at Gainesville’s University of Florida College of Medicine and served residencies at both that institution and the University of Florida College of Medicine at Jacksonville, where he went on to earn a Fellowship in Nuclear Medicine. 

Dr. Luis Jiminez

Dr. Luis Jiminez


Dr. Cameron Cummings

Dr. Cameron Cummings

Dr. Cameron Cummings – Dr. Cameron Cummings is Board Certified in Diagnostic Radiology with a subspecialty in Neuroradiology. Dr. Cummings received his medical degree at the Medical College of Wisconsin and served a residency in Diagnostic Radiology at the University of Nebraska College of Medicine. Dr. Cummings earned a Fellowship in Neuroradiology at Harvard Medical School’s Beth Israel Deaconess Medical Center.


Dr. Carmen Villanueva – Board Certified in Diagnostic Radiology and subspecializing in Neuroradiology, Dr. Carmen Villanueva earned her medical degree from the Universidad Central del Caribe. Dr. Villanueva completed residencies at the VA Medical Center in San Juan, Puerto Rico and the University of Puerto Rico, and earned a Fellowship in Neuroradiology from George Washington Hospital in Washington, DC. 

Dr. Carmen Villanueva

Dr. Carmen Villanueva


Dr. Vivek Kalra

Dr. Vivek Kalra

Dr. Vivek Kalra – Dr. Vivek Kalra is Board Certified in Diagnostic Radiology with a subspecialty in Neuroradiology. Dr. Kalra earned his medical degree at University of Miami Medical School and underwent an internship in Internal Medicine at Harvard Medical School’s Beth Israel Deaconess Medical Center. Dr. Kalra served a residency at Yale’s New Haven Hospital and went on to earn a Fellowship there in Neuroradiology.

RAO is pleased to welcome these experienced and dedicated doctors to its staff. When it comes to having a medical question answered, accuracy and speed are paramount. The addition of these talented doctors promotes superior expediency and accommodation for our many valued patients and referring clinicians. For questions about our staff and services, please call RAO at 352.671.4300 or email us at info@raocala.com.