An NCI-designated Comprehensive Cancer Center
Ronny Kalash DO

Ronny Kalash, D.O.

Radiation Oncologist
Assistant Clinical Professor, Department of Radiation Oncology
Other Languages Spoken
  • Arabic
  • Spanish
“My goal is to help guide each patient through their treatment decisions and give them confidence in their therapy plan.”
Dr. Kalash is devoted to his patients and seeks to improve all aspects of their care and quality of life, from screening to treatment to follow up. Dr. Kalash treats patients at our facilities in Mission Hills and Santa Clarita.
A University of Pittsburgh graduate with degrees in Psychiatry and Neuroscience, Dr. Kalash earned his medical degree at Lake Erie College of Osteopathic Medicine in Erie, PA and continued his training at University of Pittsburgh Hillman Cancer Center and Allegheny General Hospital in Pittsburgh, PA.
Always in search of the latest breakthroughs, Dr. Kalash has authored dozens of research publications and presentations. He’s excited to be part of the City of Hope team, praising its “cutting-edge patient-centered treatment.”


City of Hope Mission Hills Radiation Oncology, 15031 Rinaldi St.
Suite 1100

Mission Hills, CA 91345

25751 McBean Parkway , Suite 110
Suite 101

Valencia, CA 91355

Mulherkar R, Hasan S, Wegner RE, Verma V, Glaser SM, Kalash R, Beriwal S, Horne ZD. National patterns of care for early-stage penile cancers in the United States: How is radiation and brachytherapy utilized? Brachytherapy. 2019; 18(4): 503-509.
Sutera P, Kalash R, Clump DA, D’Ambrosio D, Mihai A, Burton SA, Heron DE. Stereotactive Ablative Radiation Therapy for Unresectable Colorectal Oligometastases. Adv Radiat Oncol. 2018; 4(1): 57-62.
Horne ZD, Karukonda P, Kalash R, Edwards RP, Kelley JL, Comerci JT, Olawaiye AB, Coutrney-Brooks M, Bochmeier MM, Berger JL, Taylor SE, Sukumvanich P, Beriwal S. Single-Institution Experience in 3D MRI-Based Brachytherapy for Cervical Cancer for 239 Women: Can Dose Overcome Poor Response? Int J Radiat Oncol Biol Phys. 2018; 104(1):157-164.
Kim H, Houser CJ, Kalash R, Maceil CA, Palestra B, Malush D, Beriwal S. Workflow and Efficiency in MRI-Based High Dose Rate Brachytherapy for Cervical Cancer in a High Volume Brachytherapy Center. Brachytherapy, 2018; 17(5): 753-760.
Sutera P, Kalash R, Flickinger J, Engh J, Heron DE. Clinical and Molecular Recursive Partitioning Analysis of High-grade Glioma Treated with IMRT. Am J Clin Oncol, 2019; 42(1):27-35.
Sutera P, Clump DA, Kalash R, D’Ambrosio D, Mihai A, Wang H, Petro D, Burton SA, Heron DE. Initial Results of a Multicenter Phase II Trial of Stereotactic Ablative Radiation Therapy for Oligometastatic Cancer. Int J Radiat Oncol Biol Phys, 2019; 1;103(1): 116-122.
Kalash R, Glaser SM, Rangaswamy B, Horne ZD, Kim H, House C, Beriwal S. Use of Functional MRI in Cervical Cancer Patients with Incomplete Response on PET/CT Following Image-Based High-Dose Rate Brachytherapy. Int J Radiat Oncol Biol Phys, 2018; 102(4): 1008-1013.
Kalash R, Glaser SM, Flickinger JC, Burton S, Heron DE, Gerszten PC, Engh JA, Amankulor NA, Vargo JA. Stereotactic body radiation therapy for benign spine tumors: is dose de-escalation appropriate? Journal of Neurosurgery, 2018; 29(2): 220-225. DOI: 10.3171/2017.12.SPINE17920
Glaser SM, Kalash R, Bongiorni DR, Roberts MS, Balasubramani GK, Jacobs BL, Beriwal S, Heron DE, Greenberger JS. Challenges in the Analysis of Outcomes for Surgical Compared to Radiotherapy Treatment of Prostate Cancer. In Vivo, 2018; 32(1): 113-120.
Kalash R, Pifer PM, Beriwal S, Glaser SM, Vargo JA, Heron DE. Exceptional Eight-Year Response to Stereotactic Radiosurgery Monotherapy for Multiple Brain Metastasis. Cureus Case Reports 9(12):e2001. Doi:10.7759/cureus.2001.
Shinde A, Berhane H, Rhieu BH, Kalash R, Xu K, Goff J, Epperly MW, Franicola D, Zhang X, Dixon T, Shields D, Wang H, Wipf P, Parmar K, Guinan E, Kagan V, Tyurin V, Ferris RL, Zhang X, Li S, Greeberger JS. Intraoral Mitochondrial-Targeted GS-Nitroxide, JP4-039, Radioprotects Normal Tissue in Tumor-Bearing Radiosensitive Fancd(-/-)(C57BL/6) Mice. Radiat Res., 2016; 185(2): 134-150.
Berhane H, Shinde A, Kalash R, Xu K, Epperly MW, Goff J, Franicola D, Zhang X, Dixon T, Shields D, Wang H, Wipf P, Li S, Gao X, Greenberger JS. Amelioration of radiation-induced oral cavity mucositis and distant bone marrow suppression in fanconi anemia Fancd2-/- (FVB/N) mice by intraoral GS-nitroxide JP4-039. Radiat Res., 2014; 182(1): 35-49.
Kalash R, Berhane H, Au J, Rhieu BH, Epperly MW, Goff J, Dixon T, Wang H, Zhang X, Franicola D, Shinde A, Greenberger JS. Differences in irradiated lung gene transcription between fibrosis-prone C57BL/6NHsd and fibrosis-resistant C3H/HeNHsd mice. In Vivo. 2014; 28(2):147-71.
Kalash R, Berhane H, Yang Y, Epperly MW, Wang H, Dixon T, Rhieu B, Greenberger JS, Huq MS. Improved survival of mice after total body irradiation with 10 MV photon, 2400 MU/min SRS beam. In Vivo. 2014; 28 (1): 1-12.
Berhane H, Epperly MW, Goff J, Kalash R, Cao S, Franicola D, Zhang X, Shields D, Houghton F, Wang H, Wipf P, Parmar K, Greenberger JS. Radiologic differences between bone marrow stromal and hematopoietic progenitor cell lines from Fanconi Anemia (Fancd2(-/-)) mice. Radiat Res. 2014; 181(1): 76-89.
Vargo JA, Verma V, Kim H, Kalash R, Heron DE, Johnson R, Beriwal S. Extended (5-year) outcomes of accelerated partial breast irradiation using MammoSite balloon brachytherapy: patterns of failure, patient selection, and dosimetric correlates for late toxicity. Int J Radiat Oncol Biol Phys. 2014; 88(2): 285-91.
Kalash R, Epperly MW, Goff J, Dixon T, Sprachman MM, Zhang X, Shields D, Cao S, Franicola D, Wipf P, Berhane H, Wang H, Au J, Greenberger JS. Amelioration of radiation-induced pulmonary fibrosis by a water-soluble bifunctional sulfoxide radiation mitigator (MMS350). Radiat Res. 2013; 180(5): 474-90.
Kabolizadeh P, Kalash R, Huq MS, Greenberger JS, Heron DE, Beriwal S. Dosimetric definitions of total lung volumes in calculating parameters predictive for radiation-induced pneumonitis. Am J Clin Oncol. 2015; 38(4): 401-404.
Vargo JA, Heron DE, Ferris Rl, Rwigema JC, Kalash R, Wegner RE, Ohr J, Burton S. Examining tumor control and toxicity after stereotactic body radiotherapy in locally recurrent previously irradiated head and neck cancers: implications of treatment duration and tumor volume. Head and Neck. 2014; 36(9):1349-55.
Epperly MW, Chaillet JR, Kalash R, Shaffer B, Goff J, Franicola D, Zhang X, Dixon T, Houghton F, Wang H, Berhane H, Romero C, Kim JH, Greenberger JS. Conditional radioresistance of Tet-inducible manganese superoxide dismutase bone marrow stromal cell lines. Radiat Res. 2013; 180(2): 189-204.
Kalash R, Berhane H, Goff J, Houghton F, Epperly MW, Dixon T, Zhang X, Sprachman MM, Wipf P, Franicola D, Wang H, Greenberger JS. Effects of thoracic irradiation on pulmonary endothelial compared to alveolar type-II cells in fibrosis-prone C57BL/6NTac mice. In Vivo. 2013; 27(3): 291-7.
Vargo JA, Heron DE, Ferris RL, Rwigema JC, Wegner RE, Kalash R, Ohr J, Kubicek GJ, Burton S. Prospective evaluation of patient-reported quality-of-life outcomes following SBRT +/- cetuximab for localy-recurrent, previously-irradiated head and neck cancer. Radiother Oncol. 2012; 104(1): 91-5.
Kim H, Bernard ME, Farkas A, Goff J, Kalash R, Houghton F, Shields D, Franicola D, Dixon T, Zhang X, Epperly M, Wang H, Cobanoglu MC, Greenberger JS. Ionizing irradiation protection and mitigation of murine cells by Carbamazepine is p53 and autophagy independent. In Vivo. 2012; 26(3): 341-54.
Miller DM, Reighard DA, Mehta AS, Mehta AS, Kalash R, Yates BJ. Responses of thoracic spinal interneurons to vestibular stimulation. Exp Brain Res. 2009; 195(1):89-100.
Lois JH, Rice CD, Mehta AS, Mehta AS, Kalash R, Yates BJ. Mapping of multisynaptic inputs from the midbrain, diencephalon, and cerebral cortex to phrenic motoneurons using transneuronal transport of rabies virus N2C in the cat. The FASEB Journal. 2008; 22(1).
In The News