2017-2018 Board of Directors

Steven L. Chen, MD, MBA, FACS

Steven Chen, MD is a practicing private-practice surgeon in San Diego, California and the Director of Surgical Oncology at OasisMD.  He received his medical degree and completed general surgery and critical care residencies at the University of Michigan, followed by a surgical oncology fellowship at the John Wayne Cancer Institute. Previously, he served as the Chief of Breast Surgery at UC Davis Medical Center, followed by a position as an Associate Professor of Surgery and as the Associate Program Director of the Surgical Oncology Training Program at City of Hope National Medical Center in Duarte, California. Dr. Chen maintains an active breast cancer practice and maintains clinical research interests in quality of care measures, health outcomes, and cost-effectiveness. He has been a peer-reviewed funded researcher and is an author on numerous abstracts and publications. Beyond the American Society of Breast Surgeons, Dr. Chen serves on committees in the American Medical Association, the Association for Academic Surgery, the Society of Surgical Oncology, and the American College of Surgeons, as well as an active member of the American Society of Clinical Oncology and the Society of University Surgeons.  He is on the Editorial board of the Annals of Surgical Oncology and the Journal of Surgical Education.


Walton A. Taylor, MD, FACS

Dr. Walton Taylor is a practicing surgeon in Dallas, Texas. In addition to his position on the board of directors, Dr. Taylor has, since 2009, chaired the Society's Continuing Medical Education Committee. Under his leadership, that committee has been responsible for the Society's successful application to the American Council for Continuing Medical Education, resulting in its designation as an accredited continuing medical education provider and, in 2013, earning the honor of accreditation with commendation. He has also chaired the development and implementation of the Society's Breast Education and Self-Assessment Program, which was designed to help surgeons obtain the self-assessment credits necessary to fulfill the requirements for the American Board of Surgery's Maintenance of Certification part 2. Previously Dr. Taylor, who joined the Society in 2002, served on the Society's Coding and Reimbursement Committee.

The Dallas native graduated from Vanderbilt University, after which he attended medical school at the University of Texas Medical Branch. He completed his residency at UT Southwestern and affiliate hospitals. Dr. Taylor has been voted one of the "Best Doctors in Dallas" annually since 2010.


Julie A. Margenthaler, MD, FACS

Dr. Julie Margenthaler is the Director of Breast Surgical Services of the Joanne Knight Breast Center at Siteman Cancer Center and Associate Professor of Surgery and Director of the Breast Fellowship Program at Washington University School of Medicine in St. Louis Missouri. She is a graduate of Southern Illinois University School of Medicine and completed her general surgery residency and breast fellowship at Washington University School of Medicine. During her residency, she spent three years studying immune responses to transplantation which provided a foundation for current interests in the areas of cancer genomics and vaccine development. In addition, she has collaborations within the biomedical engineering department to develop methods for minimally invasive staging of axillary lymph nodes and novel molecular imaging devices. Dr. Margenthaler is also heavily involved in the investigation of breast cancer disparities in the St. Louis metropolitan area. Clinical trials of patient and systems delays within the city's safety net system have led to widespread changes in the referral process and a subsequent forty percent reduction in late-stage breast cancer diagnoses in this at-risk population. She has established a breast cancer clinical outcomes program which has resulted in linking of multiple institutional databases, incorporation of large epidemiological, market scan, and quality control databases, and the enlistment of the expertise of statisticians, epidemiologists, and prevention specialists in the Institute for Public Health to create a robust dataset for clinical outcomes and disparities research.

Dr. Margenthaler is board certified by the American Board of Surgery, is a Fellow of the American College of Surgeons, and serves as the Chair of the Communications Committee for the American Society of Breast Surgeons. She was the Program Chair for the 2013 American Society of Breast Surgeons Annual Meeting in Chicago, IL. She has served on committees for the Association for Academic Surgeon, Society of Surgical Oncology, and the American College of Surgeons, and is the Missouri State Chair for the Commission on Cancer. She is Past President of the St. Louis Surgical Society and the Missouri Chapter of the American College of Surgeons. She is currently Associate Section Editor for the Annals of Surgical Oncology, Associate Editor for the Journal of Surgical Research, reviews for 12 other journals, and is the author of over 150 peer-reviewed publications, reviews, editorials, and book chapters. Dr. Margenthaler has given numerous lectures nationally and internationally and is committed to the mission of improving the lives of women with breast diseases and breast cancer.


Richard E. Fine, MD, FACS
Chairman of the Board

Dr. Richard Fine is associate clinical professor, Department of Surgery, Division of Surgical Oncology, University of Tennessee Health Science Center, Memphis TN. He serves as Director of Education and Research and is a practicing breast surgeon at the Margaret West Comprehensive Breast Center in Germantown TN.

After graduating from Emory University in Atlanta Georgia, Dr. Fine received his medical degree from the Medical College of Georgia followed by completion of a residency in General Surgery at Rush Presbyterian St-Lukes Medical Center in Chicago, Illinois. Dr. Fine, being one of the first few surgeons specializing in the diagnosis and treatment of breast disease spent 24 years practicing breast surgery in Marietta Georgia as Co-Director of The Breast Center and Director of Advanced Breast Care. In addition to participating in many local initiatives including the Breast Test program for underserved populations, Dr. Fine was appointed to the Cancer Advisory Committee of the Georgia Human Resources Department by then Governor Zell Miller. Dr. Fine served on the Board and as President of the GA Division of the American Cancer Society and was the Director of the Breast Program for the WellStar Health System in Marietta, Georgia, which became the first program in Georgia to be accredited by the National Accreditation Program for Breast Centers (NAPBC).

An innovative pioneer in the diagnosis and treatment of breast disease, Dr. Fine was one of the first surgeons in the country to perform stereotactic guided needle core biopsy and has been on the forefront of education and technology development in the field of image directed breast biopsy for the last two and half decades. Dr. Fine has published numerous articles and written several text book chapters related to stereotactic core needle biopsy and breast ultrasound. He serves as Co-Director of the Breast Imaging Module for the American College of Surgeons National Ultrasound Faculty and directs the Pre-meeting Imaging Courses for the American Society of Breast Surgeons Annual Meetings. Having served on numerous scientific advisory boards for medical device companies he has been instrumental in new product development and instructing his colleagues in the use of these new products.

Dr. Fine has also been involved in many national leadership roles. He served on the founding Board of the NAPBC, was a Trustee for the National Consortium of Breast Centers and served as a Governor for the American College of Surgeons representing the American Society of Breast Surgeons. Dr. Fine is a past President and Board member of the American Society of Breast Surgeons. As a co-founder of the American Society of Breast Surgeons Foundation he served as Chairman of the Board since its inception in 2004 until 2016 and now is Chairman Emeritus.


Sheldon Marc Feldman, MD, FACS

Dr. Sheldon Feldman, is a Brooklyn born New York City native. He received his medical degree from New York University Medical School and was awarded membership to Alpha Omega Alpha honor society. He then completed his residency training in surgery at New York University Medical Center-Bellevue Hospital, and fulfilled a fellowship in peripheral vascular surgery at Beth Israel Medical Center, Newark, NJ. He is a board certified surgeon and Fellow of the American College of Surgeons. He was in private practice of General and Vascular surgery from 1981-2000 where he established Hudson Valley Surgical Associates in Kingston, New York. He and his family partnered with Benedictine Hospital to establish The Fern Feldman Anolick Breast Center in 1994 where he served as medical director. His career path and humanistic approach to patient care was motivated by the tragic loss of his sister Fern to breast cancer at age 37. He was recruited as Chief of Breast Surgery to Beth Israel Medical Center in NYC in September 2000. He was appointed Professor of Clinical Surgery at Albert Einstein College of Medicine. He joined the faculty of NYP/CUMC in July 2008 as Chief of Breast Surgery and he was appointed to the Vivian L. Milstein Endowed Chair of Breast Cancer Surgery with academic rank of Associate Clinical Professor.

He is an active member of SSO (Society of Surgical Oncology), ASCO (American Society of Clinical Oncology), and is past chairperson of the publication committee for ASBrS (American Society of Breast Surgeons) served on the ASBrS Board of Directors from 2010-2013. He is a member of the editorial board for The Breast Journal, the Annals of Surgical Oncology and invited reviewer for the journal Cancer and American Journal of Surgery. He has lectured and published extensively on minimally invasive breast surgery, tumor ablation, mammary ductoscopy, endoscopic/oncoplastic surgery, sentinel node biopsy, lymphedema prevention, environmental factors and breast cancer, compassion in medicine, physician-patient communication and holistic surgical practice. Dr. Feldman has become a leader in the innovation and utilization of new surgical techniques and diagnostic tools, and is the principal investigator for both single-site and multi-centered research protocols that aim to advance the prevention, diagnosis and treatment of breast cancer.


Peter W. Blumencranz, MD
Dr. Peter Blumencranz

Peter W. Blumencranz, MD, FACS

Dr. Peter W. Blumencranz is a practicing surgeon in Clearwater, Florida. He is Medical Director of The Comprehensive Breast Care Center of Tampa Bay, part of the BayCare Health System. Dr. Blumencranz received his undergraduate degree at the University of Pennsylvania and his medical degree at Cornell University Medical School. He completed surgical residency at The New York Hospital-Cornell Medical Center and a surgical oncology fellowship at Memorial Hospital Sloan Kettering Cancer Center. Dr. Blumencranz also served on active duty in the US Navy.

Dr. Blumencranz has lectured extensively nationally and internationally. He has authored numerous abstracts and publications. Dr. Blumencranz has been a long standing principle investigator for NSABP and ACOSOG(Alliance) and a strong supporter of clinical trials in the community. Some of his research interests have included molecular analysis of sentinel nodes, genomic signatures and neoadjuvant therapy, and breast cancer in octogenarians, a common problem in Florida. He has extensive experience with breast brachytherapy and has worked with industry to bring numerous devices into clinical practice.

Dr. Blumencranz is certified in ultrasound by the ASBS. He is an active member of the Society of Surgical Oncology, Southeastern Surgical Congress and the American Society of Clinical Oncology. He has served as Commission on Cancer Cancer Liaison Physician at Morton Plant Hospital for over 25 years and received their Outstanding Performance Award multiple years.


Susan K. Boolbol, MD, FACS

Biography coming soon


Jill R. Dietz, MD, FACS

Jill Dietz, MD, is Director of Breast Center Operations at University Hospitals Case Medical Center and Associate Professor of Surgery at Case Western Reserve University School of Medicine. Her office is located at the UH Case Medical Center Chagrin Highlands Breast Center, Beachwood, Ohio.

Dr. Dietz is a Diplomat of the American Board of Surgery and received ABS recertification in 2010. She joined the UH Case Medical Center staff in 2014.

Dr. Dietz earned her undergraduate degree at Allegheny College, Meadville, Pennsylvania, and her Doctor of Medicine from Jefferson Medical College of Thomas Jefferson University, Philadelphia, Pennsylvania. She completed a fellowship in breast surgical oncology and a general surgery residency at Cleveland Clinic, Cleveland, Ohio.

A dedicated researcher, Dr. Dietz has received numerous grants for and has been the Principal Investigator on multiple research studies focused on understanding breast cancer risks. Her areas of research have included infections after surgery, oncoplastic techniques and the role that genetic factors play in developing breast cancer. Dr. Dietz has published multiple peer-reviewed manuscripts related to her research and produced chapters for nearly a dozen textbooks. She has given more than 50 oral presentations at regional and national medical meetings and has been the face and voice of community education about breast cancer on several local and national media outlets.

She is currently a member of the American Society of Breast Surgeons Board of Directors, is on the publications and corporate relations committee, and Society of Surgical Oncology (SSO) SCORE education committee. In addition, Dr. Dietz previously served as Chair of the SSO Program Directors Committee, Chair of the Fellows Institute and Chair of the American Society of Breast Surgeons Annual Meeting in 2013-2014.


Mahmoud B. El-Tamer, MD, FACS

Mahmoud El-Tamer, MD is trained as a breast surgeon with 25 years of experience caring for patients with breast cancer, and works collaboratively with other breast cancer specialists on Memorial Sloan-Kettering Cancer Center’s multidisciplinary breast cancer disease management team.

Dr. El-Tamer received his MD from the American University of Beirut in 1981.  He completed his residency at the American University of Beirut Medical Center in 1985, followed by four years of surgical oncology and reconstructive surgery at Memorial Sloan-Kettering Cancer Center.  After his training, Dr. El-Tamer became interested in joining these two disciplines to provide improved care to breast cancer patients, and has developed a special expertise in this growing field of oncoplastic surgery.

Dr. El-Tamer’s research interests have covered different aspects of breast cancer and quality of care in surgery.  He has been the principal or co-principal investigator on research grants from the Avon Breast Cancer Foundation, the United States Veterans’ Administration, and the American College of Surgeons.  His current research interests are focused on tumor micro-environment post mastectomy radiation in 1?3 positive nodes and breast conservation.  Dr. El-Tamer has recently published “Principals & Techniques in Oncoplastic Breast Cancer Surgery”, a textbook to help other surgeons enhance cosmetic results while performing surgery to treat breast cancer.  Dr. El-Tamer holds the patent to a new agent for sentinel node detection.


Dr. Nathalie Johnson
Dr. Nathalie Johnson

Nathalie G. Johnson, MD, FACS

Dr. Nathalie Johnson is a board-certified oncology surgeon with Legacy Medical Group-Surgical Oncology and medical director of Legacy Cancer Institute and Legacy Breast Health Centers. Dr. Johnson earned her medical degree from the Medical College of Virginia and completed an internship and residency in surgical oncology at the University of Southern California.

Prior to returning to Portland and Legacy Health in 1996, Dr. Johnson was Commissioner of Health for the United States Virgin Islands. In addition to her clinical practice, she plays an active role in breast cancer research projects.


Carrie A. Thoms, MD, FACS

Dr. Carrie Thoms is a board certified surgeon in Green Bay, Wisconsin. She graduated from of the University of Colorado School of Medicine and completed her general surgery residency at Emory University Hospital Affiliate Programs in 1988. She worked in Pakistan before returning to the States in 1997, settling in Cheyenne as a solo practice general surgeon. While Wyoming she was involved in the Wyoming Breast and Cervical Cancer Network Member, the American Cancer Society and Susan G. Komen Wyoming Affiliate. She helped found Celebrate Pink and Art for the Cure, local events to support breast cancer patients. In 2005, she was recruited to develop the breast program of Prevea Health, a multi-specialty clinic in her home state of Wisconsin. She is an Advisor to the Northeast Wisconsin Technical College Surgical Technologist Program Advisory Committee Member, Volunteer for Ribbon of Hope Foundation, a local breast cancer support group and Delegate to the Wisconsin Medical Society (AMA).

Dr. Thoms is certified by the American Society of Breast Surgeons (ASBrS) in breast ultrasound and stereotactic breast procedures and is a Reviewer for the ASBrS Ultrasound and Stereotactic Certification Programs. She has served as an instructor for ASBrS breast ultrasound and stereotactic breast courses, Committee Member of the Breast Imaging Technologies Certification and Accreditation Committee (2009-2015), BESAP 1 Author and BESAP 2 Editor for Mammography/ Ultrasound Module. She is Vice-Chairman of the ASBrS Foundation Board. Together with the incomparable ASBrS staff and ASBrS members, she helped launch breast360.org, the patient website for the ASBrS Foundation and still serves as its Co-Editor.