• The one and only cancer center offering the newest CyberKnife technology for pets 844-PET-CYBR (844-738-2927)

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    Meet the Doctors

    Radiation Oncology

    Siobhan Haney VMD, MS, DACVR (RO), MBA

    DSC_2736-2Dr. Haney is the first board-certified veterinary radiation oncologist to practice in Chester County, PA.  She graduated from the University of Pennsylvania with a VMD in 2004.  She received a BS from The George Washington University.  She attended Rutgers University in Camden, NJ for the completion of an MS in Biology, and in 2014 she obtained a masters degree after completing the Executive MBA program at the Pennsylvania State University.  After completing a medical and surgical internship at Red Bank Veterinary Hospital, she completed a residency in Radiation Oncology at Tufts University and became board-certified by the American College of Veterinary Radiology (Radiation Oncology) in 2008. She has been practicing Radiation Oncology at Red Bank Veterinary Hospital since 2007, joined Hope VS in the spring of 2013.  She’s been with VC3 since day one.

    Dr. Haney and her dog Poppie

    Dr. Haney has lectured both nationally and internationally on various radiation oncology subjects and has more experience treating pets with stereotactic radiation therapy than most other veterinarians in the United States. She has authored/ coauthored several scientific studies in multiple peer-reviewed journals, serves on review committees for newly written studies and actively participates in ongoing multi-institutional clinical trials.  She has presented scientific research at the annual Veterinary Cancer Society meeting and is an active member of the Veterinary Radiation Therapy Oncology Group. Her professional interests include palliative care/ quality of life for cancer patients and novel/ emerging treatments in stereotactic radiotherapy.

    Professional Memberships and Associations

    American College of Veterinary Radiology (ACVR)

    Veterinary Cancer Society      

    Dr. Cassandra Wilcox, DVM, DACVR (RO)

    Dr. Cassie Wilcox graduated from the University of Tennessee College of Veterinary Medicine in 2014. She completed 
an internship at VCA West Los Angeles Animal Hospital
 and a residency in Radiation Oncology at the University of California, Davis.

    Her professional interests include improving patient comfort and palliative care.


    Anesthesia & Pain Management

    Sandra Z. Perkowski, VMD, PhD, DACVA

    We are honored to welcome the esteemed Dr. Sandie Perkowski to the VC3 family.  We will be updating this section with her biography in the near future.  In the interim, please review the extensive details of her revered career on the website linked here, called ProfNet Connect.

    We are truly excited about the expertise Dr. Perkowski brings to the team!

    CyberKnife Physicist

    Jun Yang, PhD

    Dr. Jun Yang is one of the most experienced CyberKnife physicists in the country and has spearheaded numerous studies on radiation dosage safety for patients receiving stereotactic body radiation therapy.

    Dr. Yang serves as chairman of the physics committee and on the board of directors of the Radiosurgery Society. He was also lead author of a chapter dedicated to CyberKnife in the recently published “Stereotactic Body Radiation Therapy.”


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