Nicolas Prionas, MD, PhD

Title(s)Assistant Professor, Radiation Oncology
SchoolSchool of Medicine
Address1600 Divisadero Street
San Francisco CA 94115
ORCID ORCID Icon0000-0001-5067-7077 Additional info
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    Collapse Biography 
    Collapse Education and Training
    University of California, San Francisco, CA2019Diversity, Equity, and Inclusion Champion Training
    Stanford University, Stanford, CAResidency2019Radiation Oncology
    Santa Clara Valley Medical Center, Santa Clara, CAInternship2015Medicine (Transitional)
    University of California, Davis, Sacramento, CAPhD2012Biomedical Engineering
    University of California, Davis, Sacramento, CAMD2014Medicine
    Stanford University, Stanford, CAMS2006Biomechanical Engineering
    Stanford University, Stanford, CABS2005Biomedical Computation

    Collapse Overview 
    Collapse Overview
    Dr. Nicolas Prionas, M.D. Ph.D., is a radiation oncologist with clinical expertise and interest in the detection, diagnosis, and management of breast cancer. As a native of the San Francisco Bay Area, he is passionate about bringing UCSF care into the community across the entire region. He treats people with malignancies of all disease sites and has expertise in specialized procedures including intensity modulated radiotherapy (IMRT), stereotactic ablative/body radiotherapy (SABR/SBRT), stereotactic radiosurgery (SRS), image-guided radiotherapy (IGRT), and intra-operative radiotherapy (IORT).

    Dr. Prionas received a B.S. in Biomedical Computation and a M.S. in Biomechanical Engineering from Stanford University. He completed joint MD/PhD training in Biomedical Engineering at the University of California, Davis School of Medicine where his research specialized in quantitative imaging and radiotherapy using a novel dedicated breast computed tomography platform. Prior to arriving at UCSF, he completed Radiation Oncology Residency training at Stanford University where he was awarded the Malcolm A. Bagshaw Award for leadership and outstanding scientific achievement. Dr. Prionas is the Director of Quality and his research focuses on technologies that increase access to equitable care.

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    Collapse Publications
    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Researchers can login to make corrections and additions, or contact us for help. to make corrections and additions.
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    Altmetrics Details PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. Positive margins after mastectomy in patients with invasive lobular carcinoma of the breast: Incidence and management strategies. Am J Surg. 2021 Jun 10. Hewitt KC, Miller P, Piper M, Prionas N, Son JD, Alvarado M, Esserman LJ, Wong JM, Ewing C, Mukhtar RA. PMID: 34148670.
      View in: PubMed   Mentions:    Fields:    
    2. A pilot, randomized controlled trial of telementorship: A useful tool during social distancing. J Clin Transl Res. 2021 Feb 25; 7(1):66-71. Prionas ND, Kung TH, Dohn A, Piro N, von Eyben R, Katznelson L, Caruso TJ. PMID: 34104809; PMCID: PMC8177021.
      View in: PubMed   Mentions:
    3. Dose-response with stereotactic body radiotherapy for prostate cancer: A multi-institutional analysis of prostate-specific antigen kinetics and biochemical control. Radiother Oncol. 2021 01; 154:207-213. Levin-Epstein RG, Jiang NY, Wang X, Upadhyaya SK, Collins SP, Suy S, Aghdam N, Mantz C, Katz AJ, Miszczyk L, Napieralska A, Namysl-Kaletka A, Prionas N, Bagshaw H, Buyyounouski MK, Cao M, Agazaryan N, Dang A, Yuan Y, Kupelian PA, Zaorsky NG, Spratt DE, Mohamad O, Feng FY, Mahal BA, Boutros PC, Kishan AU, Juarez J, Shabsovich D, Jiang T, Kahlon S, Patel A, Patel J, Nickols NG, Steinberg ML, Fuller DB, Kishan AU. PMID: 33035622; PMCID: PMC7956167.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    4. Telemedicine in Radiation Oncology: Is It Here to Stay? Impacts on Patient Care and Resident Education. Int J Radiat Oncol Biol Phys. 2020 Oct 01; 108(2):416-420. Gutkin PM, Prionas ND, Minneci MO, Allen E, Balazy KE, Rahimy E, Chang DT, Horst KC. PMID: 32890524; PMCID: PMC7462793.
      View in: PubMed   Mentions: 3     Fields:    Translation:HumansPHPublic Health
    5. Intensity modulated Ir-192 brachytherapy using high-Z 3D printed applicators. Phys Med Biol. 2020 07 31; 65(15):155018. Skinner LB, Niedermayr T, Prionas N, Perl J, Fahimian B, Kidd EA. PMID: 32521512.
      View in: PubMed   Mentions: 1     Fields:    Translation:Humans
    6. Prostate-specific antigen kinetics and biochemical control following stereotactic body radiation therapy, high dose rate brachytherapy, and low dose rate brachytherapy: A multi-institutional analysis of 3502 patients. Radiother Oncol. 2020 10; 151:26-32. Levin-Epstein R, Cook RR, Wong JK, Stock RG, Jeffrey Demanes D, Collins SP, Aghdam N, Suy S, Mantz C, Katz AJ, Nickols NG, Miszczyk L, Napieralska A, Namysl-Kaletka A, Prionas ND, Bagshaw H, Buyyounouski MK, Cao M, Mahal BA, Shabsovich D, Dang A, Yuan Y, Rettig MB, Chang AJ, Jackson WC, Spratt DE, Lehrer EJ, Zaorsky NG, Kupelian PA, Steinberg ML, Horwitz EM, Jiang NY, Kishan AU. PMID: 32663537.
      View in: PubMed   Mentions: 5     Fields:    Translation:Humans
    7. Predicting Survival for Patients With Metastatic Disease. Int J Radiat Oncol Biol Phys. 2020 01 01; 106(1):52-60. Benson KRK, Aggarwal S, Carter JN, von Eyben R, Pradhan P, Prionas ND, Bui JL, Soltys SG, Hancock S, Gensheimer MF, Koong AC, Chang DT. PMID: 31682969.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    8. Multi-Institutional Analysis of Prostate-Specific Antigen Kinetics After Stereotactic Body Radiation Therapy. Int J Radiat Oncol Biol Phys. 2019 11 01; 105(3):628-636. Jiang NY, Dang AT, Yuan Y, Chu FI, Shabsovich D, King CR, Collins SP, Aghdam N, Suy S, Mantz CA, Miszczyk L, Napieralska A, Namysl-Kaletka A, Bagshaw H, Prionas N, Buyyounouski MK, Jackson WC, Spratt DE, Nickols NG, Steinberg ML, Kupelian PA, Kishan AU. PMID: 31276777.
      View in: PubMed   Mentions: 9     Fields:    Translation:Humans
    9. Long-term Outcomes of Stereotactic Body Radiotherapy for Low-Risk and Intermediate-Risk Prostate Cancer. JAMA Netw Open. 2019 02 01; 2(2):e188006. Kishan AU, Dang A, Katz AJ, Mantz CA, Collins SP, Aghdam N, Chu FI, Kaplan ID, Appelbaum L, Fuller DB, Meier RM, Loblaw DA, Cheung P, Pham HT, Shaverdian N, Jiang N, Yuan Y, Bagshaw H, Prionas N, Buyyounouski MK, Spratt DE, Linson PW, Hong RL, Nickols NG, Steinberg ML, Kupelian PA, King CR. PMID: 30735235; PMCID: PMC6484596.
      View in: PubMed   Mentions: 51     Fields:    Translation:Humans
    10. Increases in Serial Pretreatment 18F-FDG PET-CT Metrics Predict Survival in Early Stage Non-Small Cell Lung Cancer Treated With Stereotactic Ablative Radiation Therapy. Adv Radiat Oncol. 2019 Apr-Jun; 4(2):429-437. Prionas ND, von Eyben R, Yi E, Aggarwal S, Shaffer J, Bazan J, Eastham D, Maxim PG, Graves EE, Diehn M, Gensheimer MF, Loo BW. PMID: 31011689; PMCID: PMC6460103.
      View in: PubMed   Mentions: 1  
    11. 18F-EF5 PET-based Imageable Hypoxia Predicts Local Recurrence in Tumors Treated With Highly Conformal Radiation Therapy. Int J Radiat Oncol Biol Phys. 2018 11 15; 102(4):1183-1192. Qian Y, Von Eyben R, Liu Y, Chin FT, Miao Z, Apte S, Carter JN, Binkley MS, Pollom EL, Harris JP, Prionas ND, Kissel M, Simmons A, Diehn M, Shultz DB, Brown JM, Maxim PG, Koong AC, Graves EE, Loo BW. PMID: 29859786.
      View in: PubMed   Mentions: 8     Fields:    Translation:Humans
    12. SBRT and HDR brachytherapy produce lower PSA nadirs and different PSA decay patterns than conventionally fractionated IMRT in patients with low- or intermediate-risk prostate cancer. Pract Radiat Oncol. 2016 Jul-Aug; 6(4):268-275. Kishan AU, Wang PC, Upadhyaya SK, Hauswald H, Demanes DJ, Nickols NG, Kamrava M, Sadeghi A, Kupelian PA, Steinberg ML, Prionas ND, Buyyounouski MK, King CR. PMID: 26850649.
      View in: PubMed   Mentions: 11     Fields:    Translation:Humans
    13. Differentiation of ductal carcinoma in-situ from benign micro-calcifications by dedicated breast computed tomography. Eur J Radiol. 2016 Jan; 85(1):297-303. Aminololama-Shakeri S, Abbey CK, Gazi P, Prionas ND, Nosratieh A, Li CS, Boone JM, Lindfors KK. PMID: 26520874; PMCID: PMC4698333.
      View in: PubMed   Mentions: 11     Fields:    Translation:Humans
    14. Development of a patient-specific two-compartment anthropomorphic breast phantom. Phys Med Biol. 2012 Jul 07; 57(13):4293-307. Prionas ND, Burkett GW, McKenney SE, Chen L, Stern RL, Boone JM. PMID: 22705748; PMCID: PMC3404613.
      View in: PubMed   Mentions: 2     Fields:    Translation:Humans
    15. Kilovoltage rotational external beam radiotherapy on a breast computed tomography platform: a feasibility study. Int J Radiat Oncol Biol Phys. 2012 Oct 01; 84(2):533-9. Prionas ND, McKenney SE, Stern RL, Boone JM. PMID: 22436786; PMCID: PMC3397279.
      View in: PubMed   Mentions: 3     Fields:    Translation:Humans
    16. Persistent CT nephrograms following cardiac catheterisation and intervention: initial observations. Insights Imaging. 2012 Feb; 3(1):49-60. Katzberg RW, Monsky WL, Prionas ND, Sidhar V, Southard J, Carlson J, Boone JM, Lin TC, Li CS. PMID: 22695998; PMCID: PMC3292644.
      View in: PubMed   Mentions: 1  
    17. The characterization of breast anatomical metrics using dedicated breast CT. Med Phys. 2011 Apr; 38(4):2180-91. Huang SY, Boone JM, Yang K, Packard NJ, McKenney SE, Prionas ND, Lindfors KK, Yaffe MJ. PMID: 21626952; PMCID: PMC3081868.
      View in: PubMed   Mentions: 32     Fields:    Translation:Humans
    18. Experimentally determined spectral optimization for dedicated breast computed tomography. Med Phys. 2011 Feb; 38(2):646-55. Prionas ND, Huang SY, Boone JM. PMID: 21452702; PMCID: PMC3033876.
      View in: PubMed   Mentions: 14     Fields:    Translation:Humans
    19. Contrast-enhanced dedicated breast CT: initial clinical experience. Radiology. 2010 Sep; 256(3):714-23. Prionas ND, Lindfors KK, Ray S, Huang SY, Beckett LA, Monsky WL, Boone JM. PMID: 20720067; PMCID: PMC2923727.
      View in: PubMed   Mentions: 71     Fields:    Translation:Humans
    20. Longitudinal volume analysis from computed tomography: Reproducibility using adrenal glands as surrogate tumors. J Med Phys. 2010 Jul; 35(3):174-80. Prionas ND, Gillen MA, Boone JM. PMID: 20927226; PMCID: PMC2936188.
      View in: PubMed   Mentions: 2  
    21. Volume assessment accuracy in computed tomography: a phantom study. J Appl Clin Med Phys. 2010 Apr 16; 11(2):3037. Prionas ND, Ray S, Boone JM. PMID: 20592693; PMCID: PMC3051348.
      View in: PubMed   Mentions: 20     Fields:    Translation:Humans
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