Full-time Clinical Partners

Crystal Brown, MD

Dr. Brown was born and raised locally in Los Angeles. She obtained a Bachelor of Science in Sports Medicine at Pepperdine University. She then went on to conduct research at Temple University Department of Pulmonology on the subject of premature neonatal respiratory distress. She completed her medical school training at Temple University School of Medicine as a member of the Gold Humanism Society.
Dr. Brown completed her residency in Emergency Medicine at Los Angeles County USC Medical Center and was given the honor of “Resident of the Year.” Her Residency education included a focus on pediatrics. She has given lecture topics on Pediatric orthopedics, pediatric ultrasonography, and has recently published an article on pediatric foreign body removal.
Dr. Brown joined the medical staff at Providence Little Company of Mary Torrance upon completion of her residency. She is a diplomate of the American Board of Emergency Medicine as of December 2018.
Dr. Brown has professional interests in community outreach, mentorship and works closely with undergraduate students who wish to pursue a career in medicine.

Michael Daignault, MD

Dr. Michael Daignault has served as a board-certified emergency physician since completing residency at Lincoln Medical Center in the South Bronx in 2015. He joined ESPMA at Providence Little Company of Mary in 2024.

Dr. Daignault is the Medical Contributor at Fox 11 News in Los Angeles. He is passionate about improving public health thru television news media, and has appeared as a consultant for multiple LA-based news outlets as well as nationally on CNBC. He is also a contributing writer at TIME magazine.

He studied Global Health at Georgetown University’s School of Foreign Service as an undergrad. Dr. Daignault served as a US Peace Corps Volunteer in the West Indies before starting his own NGO to facilitate access to HIV/AIDS treatment and care in the region.

Sean Denny, MD

Dr. Denny grew up in Los Angeles. He completed his undergraduate studies in physics at UC Santa Barbara before deciding to switch career paths to medicine. He attended UC Irvine School of Medicine and completed his residency at Harbor UCLA. He joined the medical staff at Providence Little Company of Mary in 2023. Outside of work, he enjoys rock climbing, baking, and spending time with family.

Nicholas Enos, MD

Dr. Enos joined the medical staff at Providence Little Company of Mary Medical Center Torrance in 2015. He grew up in Cape Cod, Massachusetts, went on to attend Boston College for his undergraduate degree, and then pursued a Masters in Physiology at Georgetown University. His medical degree was completed at the University of New England, College of Osteopathic Medicine in 2011. Dr. Enos went on to residency in Emergency Medicine at the University of Connecticut, and after pursued a fellowship in Emergency Ultrasound. After his training he moved to California, and joined the medical staff at PLCMMCT. He is currently board certified in Emergency Medicine and interests include incorporating ultrasound into the practice of emergency medicine, as well as teaching. Outside of medicine, Dr. Enos enjoys running, biking, and traveling.

Brett Goodfriend, MD

Dr. Goodfriend is a board-certified Emergency Medicine physician, born and raised in Los Angeles. He is a proud double Trojan (Fight On!), earning both his undergraduate and medical degrees from USC. He completed his residency at Advocate Christ Medical Center, a high-volume Level 1 Trauma Center on the South Side of Chicago, where he served as the Resident Director of the Ultrasound Program.

After completing his residency, Dr. Goodfriend joined a large democratic physician group in Milwaukee, where he provided care across eight local hospitals. His leadership extended to multiple committees, where he played a crucial role in advancing nursing, physician assistant, resident, and attending physician education.

Dr. Goodfriend then returned to serve his hometown of Los Angeles, joining ESPMA at Providence Little Company of Mary in Torrance in 2024. He has a strong clinical interest in point-of-care bedside ultrasound in the Emergency Department and has multiple first-author publications in Emergency Medicine, Orthopedic Surgery, and Neurosurgery.

Dr. Goodfriend is conversationally fluent in Spanish, enhancing his ability to connect with a diverse patient population. Outside of medicine, he is an avid international traveler, 20-year guitar player, scuba diver, stock options/futures trader, and a diehard LA sports fan.

Matt Hankerson, MD

Dr. Hankerson joined the medical staff at Providence Little Company of Mary Medical Center Torrance in 2016. He is a Southern California native. He earned his undergraduate degree from San Diego State University in 2012. He obtained his medical degree from UC Davis School of Medicine in 2012. Dr. Hankerson completed his Emergency Medicine residency training in 2016 from the LAC+USC Medical Center, where he received the Senior Resident of the Year Award. He has multiple publications in the field of Emergency Medicine. His medical interests include Community Emergency Medicine.

Jamie Kahn, MD, MBA

Dr. Jamie Kahn joined Little Company of Mary’s Emergency Department in 2013 after earning a joint MD/MBA from the University of California, Irvine and completing her training at Thomas Jefferson University Hospitals in Philadelphia. Utilizing skills learned in her MBA, she was deeply involved in Jefferson’s Operations Committee, focused on a complete redesign of the front-end triage and admitting processes. She has multiple publications centering on the positive impact of these changes, including improved flow and increased patient satisfaction. Furthermore, this work was accepted and presented at CORD, SAEM, ACHE and UHC.

While at LCM, Dr. Kahn has utilized this background and interest in hospital operations by joining the Core Leadership team with the aim to implement strategic improvements focused around the hospital’s mission. She has been involved in the department’s front end triage redesign and remains dedicated to projects that improve safety, satisfaction and overall patient care. Dr. Kahn presently serves as LCM’s Emergency Medical Services Base Director where she works with the Prehospital Care Coordinator to provide medical direction, education and quality improvement. She is also active on the hospital’s Advocates Steering Committee. Dr. Kahn is originally from the South Bay and remains active in the community through her volunteer work with Sandpipers. She enjoys volleyball, snowboarding, scuba diving and spending time with her family and friends.

Evelyn Lee, MD

Dr. Evelyn Lee came to PLCMMCT in 2016 after completing her residency in Emergency Medicine at LA+USC. Prior to this she obtained her medical degree from Drexel University College of Medicine.

Han Park, MD

Dr. Han Park began practicing at Providence Little Company of Mary after spending more than a decade at the Queen’s Medical Center in Honolulu, Hawaii. He served in various administrative positions during his tenure in Hawaii, most notably serving as President of his Provider Group which comprised of more than 40 physicians, staffing two Emergency Departments Oahu. Prior to his time in Hawaii, Dr. Park also worked at Winthrop University Hospital (Now NYU Langone Hospital – Long Island). He completed his residency at Beth Israel Medical Center in New York City, and attended Columbia University for both College and Medical School. In his spare time, Dr. Park enjoys traveling and spending time with his wife and two daughters.

Armando Rodriguez, MD

Dr. Rodriguez has been a member of the medical staff at Providence Little Company of Mary, Torrance since 2016. Prior to coming to our facility he received his medical training at Creighton and his Emergency Medicine training at UCLA/Olive View. He served as the Chief Resident at his residency program. His Clinical interests include ED efficiency and skin and soft tissue infections.

Margarita Santiago-Martinez, MD

Margarita Santiago Martinez completed her undergraduate studies at the University of California, Los Angeles. She then went on to graduate from medical school at Michigan State University and completed her emergency medicine residency at the LAC + USC Medical Center. She then joined the medical staff at PLCMMCT in 2018.
Dr. Santiago has worked on violence prevention initiatives at LAC+USC in conjunction with the trauma department and has been a speaker for Soledad Enrichment Action at risk youth programs in East Los Angeles. She has also been a co-author for chapters for the upcoming edition of Tintinalliʼs Emergency Medicine textbook.

Dave Scherer, MD

Dr. Scherer came to PLCMMMT in 2000 and has served as an attending physician in the Emergency Department for 16 years. He graduated from USC School of Medicine in 1991 as a Dean’s Scholar with Award for Excellence in Academic Emergency Medicine, sponsored by Edward Newton for USC medical students. He completed his internship LAC+USC Medical Center Department of Emergency Medicine in 1992 and his residency from LAC+USC in 1995. Following completion of his training Dr. Scherer stayed on as clinical Faculty at LAC+USC until 1997. Dr. Scherer’s primary clinical interest is in community emergency medicine.