Richard K. Valicenti, M.D., M.A., F.A.S.T.R.O. for UC Davis Health

Richard K. Valicenti, M.D., M.A., F.A.S.T.R.O.

Chair, Department of Radiation Oncology

Professor, Department of Radiation Oncology

To see if Richard K. Valicenti is accepting new patients, or for assistance finding a UC Davis doctor, please call 800-2-UCDAVIS (800-282-3284).



Prostate Cancer

Genitourinary (GU) Oncology


Radiation Oncology

Locations and Contact

UC Davis Comprehensive Cancer Center

UC Davis Comprehensive Cancer Center
4501 X St.
Sacramento, CA 95817

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Additional Numbers

Clinic Phone


Clinic Fax


Physician Referrals

800-4-UCDAVIS (800-482-3284)

Philosophy of Care

Dr. Valicenti believes in being tough on cancer, using a multi-disciplinary team approach and leading therapeutic weapons to maximize outcomes while preventing side effects. He emphasizes that innovation is critical to the advancement of new cancer treatments and that education is essential for the benefit of patients, families and the next generation of cancer caregivers.

Clinical Interests

Dr. Valicenti is nationally and internationally recognized in the treatment of prostate cancer and other tumors, genitourinary malignancies and brain tumors. His expertise includes service for prostate seed implantation, HDR prostate, SBRT, and image-guided IMRT and Gamma Knife for cancer treatment.

Research/Academic Interests

Dr. Valicenti is conducting clinical  research to evaluate multi-modality therapies for clinically localized prostate cancer. In addition, he is carrying out outcome-based studies addressing quality-of-life questions and exploratory analyses of large databases.


Radiation Oncology

Center/Program Affiliation

UC Davis Comprehensive Cancer Center

Undergraduate School

B.S., Physics, Massachusetts Institute of Technology (MIT), Cambridge MA 1981

Medical School

M.D., Drexel University College of Medicine, Philadelphia PA 1990

Other School

M.A., Columbia University Graduate School, New York NY 1984


Internal Medicine, Hahnemann Hospital, Philadelphia PA 1990-1991


Radiation Oncology, Washington University School of Medicine, St. Louis MO 1991-1995


Radiation Oncology, Washington University School of Medicine, St. Louis MO 1991-1995

Best Doctors in America, Radiation Oncology (2005-2021), 2021

Castle Connolly, Top Doctor (2014-2021), 2021

Clinical Investigator Award, UC Davis Comprehensive Cancer Center 2012, 2013, 2015, 2018

Dean's Team Award for Excellence, UC Davis, 2016

Resident Travel Award, American Society of Therapeutic Radiology and Oncology (Faculty Advisor), 2006

Rahma OE, Yothers G, Hong TS, Russell MM, You YN, Parker W, Jacobs SA, Colangelo LH, Lucas PC, Gollub MJ, Hall WA, Kachnic LA, Vijayvergia N, O'Rourke MA, Faller BA, Valicenti RK, Schefter TE, Moxley KM, Kainthla R, Stella PJ, Sigurdson E, Wolmark N, George TJ. Use of Total Neoadjuvant Therapy for Locally Advanced Rectal Cancer: Initial Results From the Pembrolizumab Arm of a Phase 2 Randomized Clinical Trial. JAMA Oncol. 2021 Aug 1;7(8):1225-1230. doi:10.1001/jamaoncol.2021.1683. PMID:34196693.

Dyer BA, Yuan Z, Qiu J, Shi L, Wright C, Benedict SH, Valicenti R, Mayadev JS, Rong Y. Clinical feasibility of MR-assisted CT-based cervical brachytherapy using MR-to-CT deformable image registration. Brachytherapy. 2020 Jul-Aug;19(4):447-456. doi:10.1016/j.brachy.2020.03.001. Epub 2020 Apr 21. PMID:32327343.

Chen H, Nguyen KNB, Huang H, Feng C, Zhao X, Daly ME, Rao S, Fragoso R, Valicenti R, Sekhon S, Navarro SM, Kim EJ, Cho M, Tam K, Farkas L, Halabi WJ, Monjazeb AM, Rong Y. Effect and Safety of Radiation Therapy Boost to Extramesorectal Lymph Nodes in Rectal Cancer. Pract Radiat Oncol. 2020 Sep-Oct;10(5):e372-e377. doi:10.1016/j.prro.2019.12.007. Epub 2019 Dec 20. PMID:31866577.

Hagan M, Kapoor R, Michalski J, Sandler H, Movsas B, Chetty I, Lally B, Rengan R, Robinson C, Rimner A, Simone C, Timmerman R, Zelefsky M, DeMarco J, Hamstra D, Lawton C, Potters L, Valicenti R, Mutic S, Bosch W, Abraham C, Caruthers D, Brame R, Palta JR, Sleeman W, Nalluri J. VA-Radiation Oncology Quality Surveillance Program. Int J Radiat Oncol Biol Phys. 2020 Mar 1;106(3):639-647. doi:10.1016/j.ijrobp.2019.08.064. Epub 2020 Jan 23. PMID:31983560.

Buwenge M, Deodato F, Macchia G, Siepe G, Zhao X, Valicenti RK, Cilla S, Alitto AR, Ntreta M, Bisello S, Mantini G, Valentini V, Morganti AG, Cammelli S. Radiotherapy Plus GnRH Analogue Versus High Dose Bicalutamide: A Case Control Study. Anticancer Res. 2019 Nov;39(11):6373-6378. doi:10.21873/anticanres.13850. PMID:31704870.

Pisansky TM, Thompson IM, Valicenti RK, D'Amico AV, Selvarajah S. Adjuvant and Salvage Radiation Therapy After Prostatectomy: ASTRO/AUA Guideline Amendment, Executive Summary 2018. Pract Radiat Oncol. 2019 Jul-Aug;9(4):208-213. doi:10.1016/j.prro.2019.04.008. Epub 2019 Apr 30. PMID:31051281.

Pisansky TM, Thompson IM, Valicenti RK, D'Amico AV, Selvarajah S. Adjuvant and Salvage Radiotherapy after Prostatectomy: ASTRO/AUA Guideline Amendment 2018-2019. J Urol. 2019 Sep;202(3):533-538. doi:10.1097/JU.0000000000000295. Epub 2019 Aug 8. PMID:31042111.

Dyer BA, Yuan Z, Qiu J, Benedict SH, Valicenti RK, Mayadev JS, Rong Y. Factors associated with deformation accuracy and modes of failure for MRI-optimized cervical brachytherapy using deformable image registration. Brachytherapy. 2019 May-Jun;18(3):378-386. doi:10.1016/j.brachy.2019.01.001. Epub 2019 Feb 7. PMID:30745016.

Yuan Z, Nair CK, Benedict SH, Valicenti RK, Rao S, Fragoso RC, Wright C, Qiu J, Rong Y. Converting Treatment Plans From Helical Tomotherapy to L-Shape Linac: Clinical Workflow and Dosimetric Evaluation. Technol Cancer Res Treat. 2018 Jan 1;17:1533033818785279. doi:10.1177/1533033818785279. PMID:29986638.

Shi L, He Y, Yuan Z, Benedict S, Valicenti R, Qiu J, Rong Y. Radiomics for Response and Outcome Assessment for Non-Small Cell Lung Cancer. Technol Cancer Res Treat. 2018 Jan 1;17:1533033818782788. doi:10.1177/1533033818782788. PMID:29940810.