In most cases women with breast cancer will have some sort of surgery as part of their breast cancer treatment. There are several breast cancer surgeries that our breast cancer surgeons specialize in, which include lymph node biopsy, lumpectomy, breast conserving surgery, mastectomy, breast reconstruction during mastectomy and breast reconstruction after mastectomy. Bedford Breast Center’s breast cancer surgeons are among the top surgeons in the field today, and we are dedicated to providing the highest standard of breast reconstruction in Beverly Hills and the greater Los Angeles area, every day.

Leslie F. Memsic, MD, FACS | Breast Cancer Surgeon

best breast cancer surgeon los angeles, Dr. Leslie Memsic

Dr. Memsic brings over 33 years of medical experience to her demanding surgical practice in the Los Angeles area. Breast cancer patients seeking treatment at the Bedford Breast Center uniformly praise her compassion and understanding as well as her miraculous surgical skill.

She has been recognized by her peers with multiple awards including Vitals “Most Compassionate Doctor” (received 5 years in a row), “Top Oncologist”, and “Patient’s Choice”; Castle and Connolly named her as one of “America’s Top 10 Doctors”, a prestigious honor, awarded to less than 3 percent of physicians nationally.


Heather Halpin Richardson, MD, FACS | Breast Cancer Surgeon

Los Angeles Breast Cancer Surgeon Dr. Heather Richardson

Dr. Heather Richardson has been caring for patients with breast disease since 2004.

“I can’t think of a better job. Very few people have an opportunity to use their hearts, hands, eyes, and ears every day with the goal of giving more time to mothers, sisters, daughters, and wives.”

She specializes in nipple-sparing mastectomies, breast-conserving therapy, and devised the Goldilocks Mastectomy technique with her previous plastic surgery colleague, Dr. Grace Ma.



Lisa B. Cassileth, MD, FACS | Breast Cancer Surgeon

Dr. Lisa Cassileth breast cancer surgeon in Beverly Hills

Board certified by the American Board of Plastic Surgeons, Dr. Cassileth divides her time between her private plastic and reconstructive surgery practice in Beverly Hills, and her duties as Clinical Chief of the Division of Plastic Surgery at Cedars-Sinai Medical Center. Her signature One-Step Breast Reconstruction method is quickly becoming the standard of care for breast cancer patients throughout the country. She also mentors and trains surgical residents in the breakthrough breast reconstruction methods she herself has pioneered making her one of the best breast cancer surgeons Los Angeles has.



Kelly Killeen, MD, FACS | Breast Cancer Surgeon

Dr. Kelly Killeen breast cancer surgeon

Kelly Killeen is double board certified by the American Board of Surgery and the American Board of Plastic Surgery; she is known for stellar patient care and excellent results with a commitment to detail, and to putting her patients’ needs above all else.Dr. Killeen received her medical degree from Loma Linda University School of Medicine in Loma Linda, California, and completed her residency in plastic surgery at the Oregon Health & Science University Hospital in Portland, Oregon, where she served as Chief Resident. She completed her residency in general surgery at Cedars-Sinai Medical Center in Los Angeles under the direction of Dr. Lisa Cassileth, where she was recognized for her outstanding academic achievement in surgery, leadership, and clinical performance.


Caroline Moss, MD | Board-Certified American College of Radiology

Dr. Caroline Moss Radiologist

Dr. Caroline Moss is an expert physician who has experience and training from centers across the United States. She specializes in breast and women’s radiology. She has been practicing breast imaging since 1991 and specializes in mammography, ultrasonography and both ultrasound-guided and stereotactic biopsies. Dr. Moss is also trained in 3D Breast Tomosynthesis, the newest breast imaging technology. She especially enjoys the patient contact at Bedford Breast Center, since many areas of radiology don’t offer patient interaction. Prior to coming to Bedford Breast Center, she worked in offices that cared for women in underserved populations and still does so a few times a week. She is excited to be part of our expanding breast center and we are happy to have her as a member of the Bedford Breast Center where she counsels patients on mammogram and ultrasound findings as well as helps provide pinpoint accuracy to allow for cancer removal and diagnosis.

Dr. Moss is a native Californian. She trained in radiology at Henry Ford Hospital in Detroit and UCLA. She completed her CT/US/MRI fellowship at Cedars-Sinai Hospital in Los Angeles and also has special training in nuclear medicine.


Sarah Flood, PA-C

Sarah Flood, PA-C

A physician associate is a medical practitioner trained to provide comprehensive care under a physician. PAs have been working with physicians for more than 20 years and continue to deliver expert care to patients in many fields of medicine. With a Master of Science in Physician Associate Studies from Touro University Nevada and extensive training in breast health and breast ultrasound mammography under Dr. Heather Richardson, Sarah is uniquely qualified to provide professional, thorough breast care. Sarah’s sole focus is breast care. She routinely performs more than 120 breast ultrasounds each month and around 1,000 breast exams per year.

Once you arrive at your visit, Sarah reviews your medical and family history, listens to your concerns or symptoms, performs a breast exam and ultrasound, and discusses your results with you. A conventional mammogram takes about 10-20 minutes to perform, while digital mammography is typically completed within 10 minutes. After your screening, Sarah can interpret your results to determine whether you need a follow-up visit. If your results are irregular, the team at Bedford Breast Center may schedule an appointment for you with Leslie F. Memsic, MD, FACS.

Prior to joining the Bedford Breast Center, Sarah spent her time focusing on women’s health during her PA training and volunteered at local women’s shelters. In her free time, Sarah enjoys playing volleyball and searching for her next hiking trail.

Ruzanna Katabyan, RDMC | Ultrasound Technician

After obtaining her Bachelor’s degree from California State University of Northridge, Ruzanna immediately enrolled in Casa Loma College where she graduated as Valedictorian in 2013, earning her degree in Diagnostic Medical Sonography. She joined our team after gaining significant experience in the area of breast imaging and brings with her a compassion and calmness that our patients need when facing health concerns. She feels honored to be making a difference in the physical and mental well-being of our patients.

Ruzanna loves being an Angeleno and spends her spare time exploring the city, from local art shows, festivals, and concerts, she enthusiastically pursues it all.

“I got into the medical field because I am fascinated by the human body, it is truly incredible. I love having the opportunity to learn new lessons each day, not just from science but from the many personalities that come from all walks of life that I have the privilege of meeting daily.”

Bedford Breast Center Serving Beverly Hills, Santa Monica and the greater Los Angeles areas.