Our radiology service is dedicated to the relief of animal suffering by the accurate identification and staging of disease. A multitude of diagnostic services such as ultrasonography, myelography, urinary imaging (excretory urography, cystography, urethrography, retrograde vaginourethrography), gastrointestetinal contrast studies (grastrography, upper GI, barium enema), thoracic and orthopedic special positioning images, computed tomography, and MRI scans are offered. All disciplines of diagnostic imaging are intended to add insight into diseases of endocrine, gastrointestinal, urinary, oncological, neurological, respiratory, and infectious origin.

Lenore Anderson Mohammadian, DVM, MSpVM

Diplomate, American College of Veterinary Radiology 

Dr. Mohammadian is a radiology specialist at CVS. She is trained in diagnostic imaging including radiographs, ultrasound, contrast studies, nuclear medicine, computed tomography (CT) and magnetic resonance imaging (MRI), with a special interest in cancer imaging and minimally invasive biopsies. 

Prior to joining CVS, Dr. Mohammadian completed her residency in Diagnostic Radiology and a Master's in Specialized Veterinary Medicine from North Carolina State University. She worked in general practice prior to her residency, and also completed a rotating internship in a small animal medicine and surgery at the Emergency Animal Hospital and Referral Center in San Diego. 

Dr. Mohammadian earned her Doctorate of Veterinary Medicine from Cornell University. She also holds a Bachelors of Arts in Biochemistry from Bowdoin College.

David Proulx, DVM, MSpVM

Diplomate, American College of Veterinary Internal Medicine, Oncology
Diplomate, American College of Veterinary Radiology, Radiation Oncology

Dr. Proulx is head of radiation oncology and a member of Angel Care Cancer Center at California Veterinary Specialists (CVS). His areas of expertise within oncology include both medical and radiation oncology. Prior to joining CVS, Dr. Proulx completed a small animal internship at North Carolina State University. After completing a medical oncology residency in 2003 and a radiation oncology residency in 2005, also at North Carolina State University, he earned board certification as a specialist in medical oncology and radiation oncology. During this training Dr. Proulx also earned a Master's Degree in Specialized Veterinary Medicine.

Dr. Proulx earned his Doctorate of Veterinary Medicine from Tufts University. He holds a Bachelor of Science from Tufts University and lived in Kenya for two years as a Fulbright Scholar. 

David Hager, DVM, MD

Dr. Hager is a board certified veterinary radiologist, and has a unique background in medical and radiologic training in that he is both a veterinarian and a physician. He received his veterinary degree in 1980 from Purdue University, completed a small animal medicine and surgery internship at Louisiana State University and then underwent a three year veterinary radiology residency at the University of California, Davis, that culminated in board certification as a veterinary radiologist in 1984. He joined the faculty at the University of Florida as an Assistant Professor for four years before establishing a radiology practice in San Diego in 1988. 

Due to an intense interest in comparative medicine and advanced imaging procedures, Dr. Hager attended medical school at the University of California, Davis and graduated in 1994, while maintaining a radiology practice in San Diego. As part of his human medical training, he completed a transitional internship at Mercy Hospital in San Diego and two years of radiology residency at the University of California, San Diego.

In San Diego, he established and later sold, a stand alone veterinary diagnostic imaging center. The center provided nuclear medicine, ultrasound, CT and MR imaging along with hyperthyroid cat treatment. Recently, Dr Hager’s practice has evolved into emphasizing teleradiology consultations with a special interest in MR and CT imaging. Dr. Hager has over forty articles on veterinary radiology topics published in various veterinary journals and has spoken both nationally and internationally on veterinary radiology subjects. 

Dr. Hager continues his interest in comparative human and veterinary radiology while striving to obtain the highest quality of diagnostic imaging for his veterinary patients and practice. Having been a cat lover his entire career, Dr. Hager continues to own and manage the Animal Imaging & Treatment Center ( in Las Vegas, NV, a hyperthyroid cat treatment center.

Chelsea Kunst, DVM, DACVR

Diplomate, American College of Veterinary Radiology 

Dr. Kunst is a board-certified veterinary radiologist working at our Murrieta and Ontario locations. Before joining CVS, she completed her veterinary Diagnostic Imaging residency at Michigan State University after obtaining her Bachelors of Science from UCSD and her veterinary degree from Kansas State University. Dr. Kunst spent a year at Mississippi State University where she completed a rotating internship.


Dr. Kunst has an appreciation for all types of imaging but developed focal interests in PET-CT imaging and CT screening. She enjoys lecturing and sharing her passion for radiology.

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