Meet Our Pediatricians

laurieLaura Bruckner, MD, FAAP

Born and raised on the east coast, Dr. Laura Bruckner moved to Los Angeles in 1979, with her husband, Dr. Irwin Bruckner, and they never looked back. After completing undergraduate studies together at the University of Pennsylvania and then graduating from NYU Medical School, Laura and Irwin did a three year pediatric residency at Children’s Hospital of Los Angeles. Laura went on to do one year of a fellowship in Pediatric Intensive Care, also at CHLA, before deciding on a career in general pediatrics. With 30 years of  practice experience, she has keen diagnostic skills and sage clinical judgement. She loves watching and helping young families thrive. Having raised three amazing children, while living in Sherman Oaks since 1983, Dr. Laura has great insight into child rearing in the Valley, especially for those who love sports, academics and all things social.  She especially loves to share her knowledge with young families just starting out.

Andrew Krasnoff, MD, FAAP

Dr. Krasnoff is a Board Certified Pediatrician, practicing in Encino since 1985.  He grew up in the San Fernando Valley, attending El Camino Real High School.  He was a Biology major at Stanford University and studied medicine at  U.S.C.  (which causes real problems during the college football season!)  He then did his Pediatric Residency at  Children’s Hospital of Los Angeles, followed by a fellowship in Adolescent Medicine, also at C.H.L.A..  He was one of the three founding doctors of this practice in 1987, which has since grown to eight Pediatricians and a staff of 20 dedicated and wonderful nurses, front office and business personnel.   He is a diplomat of the American Board of Pediatrics and a fellow of the American Academy of Pediatrics.  He is married over 30 years and has raised two strapping young men, now in their 20’s.  He sees patients from the day of birth through  the age of 24.  He feels blessed with his life and his career and plans to continue in practice for many years to come.


Helen Lederer, MD, FAAP

Dr. Lederer is a board certified pediatrician and Fellow of the American Academy of Pediatrics. She earned her Bachelor of Science degree from George Washington University and her Medical Degree from George Washington Medical School. She completed her pediatric internship and residency at Children’s Hospital Los Angeles. Dr. Lederer has spent time in a number of different medical environments including the West Indies, an Indian Reservation and the mountains of Nepal.  She has been in private practice in the San Fernando Valley for 30 years.From a variety of experiences Dr. Lederer believes that raising healthy and well adjusted children is a partnership between the parents and the physician.Each family is unique and has individual hopes and concerns.Dr. Lederer feels open communication and an easy exchange of thoughts and information are  important components of the doctor-patient relationship. Dr. Lederer has been married to her husband Stephen for 31 years. They have a daughter, Kate, who has a degree in early child development and a MA in Marriage and Family Therapy.  In her spare time, Dr. Lederer, is involved in the world of animal rescue.



Irwin Bruckner, MD, FAAP

Dr. Irwin Bruckner is a board-certified pediatrician, dedicated to providing high quality medical care to children of all ages from birth through the early twenties.  He enjoys working with families helping with all aspects of raising children, and especially loves observing development from infants learning to smile and roll over to toddlers beginning to walk and talk to children finding their way through school and other youth activities to adolescents dealing with all the pressures and difficulties of transitioning into adulthood.  He believes that forming personal relationships makes being a pediatrician the best job in the world.  He grew up in New York and attended the University of Pennsylvania for undergraduate studies.  There he met his wife, Dr. Laura Bruckner, and together they both went on to receive their M.D.’s at NYU School of Medicine, as well as completing their pediatric residency training at Children’s Hospital of Los Angeles.   They have both enjoyed being in practice in the valley for more than 25 years, while raising their three children, Daniel, Emily and Julia, each of whom is following in their parents’ footsteps to careers in medicine.  Dr. Irwin Bruckner is not only extremely proud of his wonderful family, but also his long term medical associates and staff who all work together to deliver such excellent pediatric care.


Dr MarshallCatherine Marshall, MD, FAAP

Dr. Marshall  is a board-certified pediatrician and Fellow of the American Academy of Pediatrics. She cares for children from birth through their early twenties and enjoys helping parents through all stages of development. She attended the University of California Irvine where she earned dual degrees in biology and psychology. She then earned her medical degree from Chicago Medical School. She completed her internship and residency at Children’s Hospital Los Angeles. Dr. Marshall has been practicing medicine for 20 years. She is happily married to her husband Kevin and has 3 daughters: Ashley, Sabrina, and Hannah.  For more information you can visit Dr. Marshall’s personal website at


Alison Metherell Mann, MD, MPH, FAAP

As the second of three children, Dr. Mann was born and raised in Orange County, California. She attended UCLA where she graduated with a BA in Economics – international emphasis. She received her M.D. from Tulane University School of Medicine, and also earned a Masters of Public Health (MPH) degree in Tropical Medicine from Tulane School of Public Health.  Dr. Mann completed her Pediatric Internship and Residency at the USC/Keck-Los Angeles County Medical Center.  She is board certified by the American Board of Pediatrics and is a fellow of the American Academy of Pediatrics. She has been practicing pediatrics in Encino since 2002 and her hope is to provide excellent medical care with compassion and respect for each child and his or her family. She would like, above all, for her patients and their families to feel comfortable with her, her staff, and the office setting. Dr. Mann lives in Los Angeles with her wonderful husband, and they enjoy hiking with their dog, Wrigley, as well as gardening and socializing with friends.  She also enjoys what she terms to be “voluntourism” – medical volunteer work in poor countries as part of her vacation time.


Sloane Sevran, MD, FAAP

Dr. Sevran is a board-certified pediatrician and Fellow of the American Academy of Pediatrics. She is also President of the Los Angeles Pediatric Society. She was born on the east coast but has been a resident of the San Fernando Valley since she was 2 years old. She decided she was going to be a doctor at the age of 6 and followed her dreams. Dr. Sevran was Valedictorian of El Camino Real High School in Woodland Hills; graduated Cum Laude with Honors in her major from Yale University; and received her Medical degree from Albert Einstein College of Medicine in New York. She completed her internship and residency in Pediatrics at The Mattel Children’s Hospital at UCLA. Dr. Sevran has been in private practice for over 10 years. She treats patients from the day of their birth through their college years. She believes in fostering a relationship with the entire family.  She feels that part of being a good pediatrician is guiding families through every aspect of their child’s growth and development – both physically and emotionally. She has a bright and handsome   son and a beautiful and precocious  daughter whom she says have given her the greatest joy and the greatest learning experiences.


Daniel Bruckner, MD

Dr. Daniel Bruckner is a board certified Pediatrician who specializes in the general health of children and adolescents. As a graduate of the Baccalaureate/MD program at the University of Southern California, Daniel received his Bachelors in Biological Sciences and his Medical Degree. He then spent three years at Children’s Hospital Los Angeles as a pediatric resident, where he was a proud recipient of the Associates and Affiliates Award, as well as the Chief Residents Award. Daniel has currently been a pediatrician for eight years. He is currently the Vice Chair of Pediatrics at Providence Tarzana Hospital. Lastly,  Daniel Bruckner volunteers his time hosting high school students as part of the Eve and Gene Black Summer Intern Program for the Los Angeles Pediatrics Society.