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Bethany L. Niell, MD, PhD

Specialty: Radiology
Program: Diagnostic Imaging and Interventional Radiology

Call 1-888-MOFFITT

or call 1-888-MOFFITT


Dr. Niell received her MD and PhD degrees from the University of Michigan. She completed a Diagnostic Radiology Residency at Massachusetts General Hospital, where she also served as Chief Resident. Dr. Niell is a board-certified subspecialty-trained diagnostic radiologist. Her clinical practice involves interpreting mammograms, ultrasound, breast MRI and performing image-guided breast biopsies. Dr. Niell is especially interested in the appropriate utilization of breast imaging, including breast MRI, mammography, and tomosynthesis, based on her background in public health.

Education & Training

Board Certification:

  • Diagnostic Radiology


  • Massachusetts General Hospital - Diagnostic Radiology

Medical School:

  • University of Michigan, School of Medicine - MD
Participating Trials

A Phase 1/2 Study of Talimogene laherparepvec in Combination with Neoadjuvant Chemotherapy in Triple Negative Breast Cancer
Condition: Breast
Intervention: Adriamycin (doxorubicin); Talimogene laherparepvec 10^6 PFU (Talimogene Laherparepvec); Talimogene laherparepvec 10^8 PFU (Talimogene Laherparepvec); Taxol (paclitaxel); cyclophosphamide; cytoxan (cyclophosphamide); doxorubicin; paclitaxel

If you believe you are eligible for one of these trials or studies, please call
1-888-MOFFITT (1-888-663-3488).


  • Monticciolo DL, Newell MS, Moy L, Niell B, Monsees B, Sickles EA. Breast Cancer Screening in Women at Higher-Than-Average Risk: Recommendations From the ACR. J Am Coll Radiol. 2018 Jan. Pubmedid: 29371086.
  • Lee CS, Moy L, Joe BN, Sickles EA, Niell BL. Screening for Breast Cancer in Women Age 75 Years and Older. Ajr Am J Roentgenol. 2018 Feb;210(2):256-263. Pubmedid: 29112471.
  • Mainiero MB, Moy L, Baron P, Didwania AD, diFlorio RM, Green ED, Heller SL, Holbrook AI, Lee SJ, Lewin AA, Lourenco AP, Nance KJ, Niell BL, Slanetz PJ, Stuckey AR, Vincoff NS, Weinstein SP, Yepes MM, Newell MS. ACR Appropriateness Criteria® Breast Cancer Screening. J Am Coll Radiol. 2017 Nov;14(11S):S383-S390. Pubmedid: 29101979.
  • Niell BL, Freer PE, Weinfurtner RJ, Arleo EK, Drukteinis JS. Screening for Breast Cancer. Radiol Clin North Am. 2017 Nov;55(6):1145-1162. Pubmedid: 28991557.
  • Slanetz PJ, Moy L, Baron P, diFlorio RM, Green ED, Heller SL, Holbrook AI, Lee SJ, Lewin AA, Lourenco AP, Niell B, Stuckey AR, Trikha S, Vincoff NS, Weinstein SP, Yepes MM, Newell MS. ACR Appropriateness Criteria® Monitoring Response to Neoadjuvant Systemic Therapy for Breast Cancer. J Am Coll Radiol. 2017 Nov;14(11S):S462-S475. Pubmedid: 29101985.
  • Lee SJ, Trikha S, Moy L, Baron P, diFlorio RM, Green ED, Heller SL, Holbrook AI, Lewin AA, Lourenco AP, Niell BL, Slanetz PJ, Stuckey AR, Vincoff NS, Weinstein SP, Yepes MM, Newell MS. ACR Appropriateness Criteria(®) Evaluation of Nipple Discharge. J Am Coll Radiol. 2017 May;14(5S):S138-S153. Pubmedid: 28473070.
  • Amornsiripanitch N, Mangano M, Niell BL. Screening Mammography: Patient Perceptions and Preferences Regarding Communication of Estimated Breast Cancer Risk. Ajr Am J Roentgenol. 2017 May;208(5):1163-1170. Pubmedid: 28225643.
  • Freer PE, Niell B, Rafferty EA. Preoperative Tomosynthesis-guided Needle Localization of Mammographically and Sonographically Occult Breast Lesions. Radiology. 2015 May;275(2):377-383. Pubmedid: 25575115.
  • Niell BL, Kattapuram T, Halpern EF, Salazar GM, Penzias A, Bonk SS, Forde JC, Hayden E, Sande M, Minehart RD, Gordon JA. Prospective analysis of an interprofessional team training program using high-fidelity simulation of contrast reactions. Ajr Am J Roentgenol. 2015 Jun;204(6):W670-W676. Pubmedid: 26001255.
  • Niell BL, Bennett D, Sharma A, Gazelle GS. Extramammary Findings on Breast MR Examinations: Frequency, Clinical Relevance, and Patient Outcomes. Radiology. 2015 Jul;276(1):56-64. Pubmedid: 25584711.
  • Niell BL, Gavenonis SC, Motazedi T, Chubiz JC, Halpern EP, Rafferty EA, Lee JM. Auditing a breast MRI practice: performance measures for screening and diagnostic breast MRI. J Am Coll Radiol. 2014 Sep;11(9):883-889. Pubmedid: 24787571. Pmcid: PMC4156888.
  • Niell BL, Lee JM, Johansen C, Halpern EF, Rafferty EA. Patient outcomes in canceled MRI-guided breast biopsies. Ajr Am J Roentgenol. 2014 Jan;202(1):223-228. Pubmedid: 24370148. Pmcid: PMC3876032.
  • Niell BL, Vartanians VM, Halpern EP. Improving education for the management of contrast reactions: an online didactic model. J Am Coll Radiol. 2014 Feb;11(2):185-192. Pubmedid: 24387957.
  • Hedegard W, Niell B, Specht M, Winograd J, Rafferty E. Breast reconstruction with a deep inferior epigastric perforator flap: imaging appearances of the normal flap and common complications. Ajr Am J Roentgenol. 2013 Jan;200(1):W75-W84. Pubmedid: 23255774.
  • Carter JB, Barnes JA, Niell BL, Nardi V. Case records of the Massachusetts General Hospital. Case 24-2013. A 53-year-old woman with erythroderma, pruritus, and lymphadenopathy. N Engl J Med. 2013 Aug;369(6):559-569. Pubmedid: 23924007.
  • Niell B, Specht M, Gerade B, Rafferty E. Is excisional biopsy required after a breast core biopsy yields lobular neoplasia?. Ajr Am J Roentgenol. 2012 Oct;199(4):929-935. Pubmedid: 22997389.
  • Greenwood CM, Sun S, Veenstra J, Hamel N, Niell B, Gruber S, Foulkes WD. How old is this mutation? - a study of three Ashkenazi Jewish founder mutations. BMC Genet. 2010 May;11:39. Pubmedid: 20470408. Pmcid: PMC2889843.
  • Niell BL, Rennert G, Bonner JD, Almog R, Tomsho LP, Gruber SB. BRCA1 and BRCA2 founder mutations and the risk of colorectal cancer. J Natl Cancer Inst. 2004 Jan;96(1):15-21. Pubmedid: 14709734.
  • Niell BL, Long JC, Rennert G, Gruber SB. Genetic anthropology of the colorectal cancer-susceptibility allele APC I1307K: evidence of genetic drift within the Ashkenazim. Am J Hum Genet. 2003 Dec;73(6):1250-1260. Pubmedid: 14624392. Pmcid: PMC1180391.
  • Erson AE, Niell BL, DeMers SK, Rouillard JM, Hanash SM, Petty EM. Overexpressed genes/ESTs and characterization of distinct amplicons on 17q23 in breast cancer cells. Neoplasia. 2001 Nov;3(6):521-526. Pubmedid: 11774034. Pmcid: PMC1506561.