Stanford Comprehensive Epilepsy Program Team

Adult Epilepsy

Robert Fisher, MD, PhD
Maslah Saul MD Professor of Neurology & Neurological Sciences
Director of Stanford Comprehensive Epilepsy Program

Robert S. Fisher, MD, PhD is Maslah Saul MD Professor and Director of the Stanford Epilepsy Center and EEG lab. He had research funding or awards from the Klingenstein Foundation, Epilepsy Foundation, CURE, American Society of Clinical Neurophysiology, NIH and NSF. He has published about 230 peer-reviewed articles and 3 books. He has been named every year from 1996 to 2019 in Best Doctors in America.  He received the Ambassador Award from the International League Against Epilepsy, the 2005 American Epilepsy Society Service Award and the 2006 Annual Clinical Research Award. Dr. Fisher is Past-President of the American Epilepsy Society, and has served on the Board of the International League Against Epilepsy and as Editor-in-Chief of the Journal, Epilepsia. He is past Editor-in-Chief of the world’s most visited website about epilepsy, Dr. Fisher led the projects to develop a formal definition of who has epilepsy and an update of seizure type classification. His recent research is on new devices to detect and treat seizures. He led the clinical trials on deep brain stimulation for epilepsy and on the next-generation (heart-rate-sensing) vagus nerve stimulation device. Dr. Fisher has additionally won several teaching awards and cares for epilepsy patients in the Stanford Epilepsy Clinics and inpatient epilepsy unit.

Kimford J. Meador, MD
Professor of Neurology & Neurological Sciences
Director of the Epilepsy Monitoring Unit

Dr. Meador received his MD from the Medical College of Georgia.  After an internship at the University of Virginia and service as an officer in the Public Health Corps, he completed a residency in Neurology at the Medical College of Georgia and a fellowship in Behavioral Neurology at the University of Florida. Dr. Meador is currently the Multi-PI on a multicenter NIH investigation on the pregnancy outcomes in women with epilepsy including neurodevelopmental effect of fetal antiepileptic drug exposure. Dr. Meador has authored over 400 peer-reviewed publications and has served on the editorial boards of numerous journals.

Jessica Falco Walter, MD
Clinical Assistant Professor of Neurology & Neurological Sciences

Dr. Walter received her MD from Georgetown University in Washington, DC. She stayed at Georgetown for her internship in Internal Medicine and then moved to New York City to complete her residency in Neurology at the Icahn School of Medicine at Mount Sinai. She went on to pursue a Clinical Neurophysiology Fellowship at Rush University in Chicago, IL, training in both EEG and EMG. Due to her particular interest in Epilepsy she went on to become the first Epilepsy Fellow at Rush University. Dr. Walter provides clinical care to general neurology patients as well as patients with epilepsy and enjoys teaching residents and medical students. She also has a particular interest in dietary treatments for epilepsy and clinical research.

Kevin Graber, MD
Clinical Professor of Neurology & Neurological Sciences
Director of Outpatient Epilepsy Clinic

Dr. Kevin Graber earned his MD from Indiana University in 1992 and completed his training in Neurology & Neurological Sciences at Stanford Medical Center. Dr Graber has earned prestigious research awards and has served on several national committees including the American Epilepsy Society, CURE, and Epilepsy Foundation. As a Clinician Educator, Dr. Graber provides clinical care to patients with epilepsy, and teaches fellows, residents, and medical students. Dr. Graber's research is focused on discovering how brain injuries, such as trauma, lead to epilepsy.

Scheherazade Le, MD
Clinical Associate Professor of Neurology & Neurological Sciences

Dr. Le received her MD from the University of California, San Francisco School of Medicine.  She completed her internship in Internal Medicine and residency in Neurology at Stanford.  She served as Chief Resident in Neurology and then continued her training as a Neurophysiology fellow at Stanford in both Epilepsy/Electroencephalography (EEG) and Intra-operative Neuromonitoring (IONM).  As a Clinician Educator, she is particularly interested in patient education, trainee medical education, tuberous sclerosis and clinical research.

Martha Morrell, MD
Professor of Neurology & Neurological Sciences

Dr. Morrell has focused her career on the treatment of patients with epilepsy, including health issues for women with epilepsy. She attended Stanford Medical School, then completed her residency in Neurology and her fellowship in EEG and epilepsy at University of Pennsylvania. After founding the Stanford Comprehensive Epilepsy Center, she moved to Columbia University where she was the Caitlin Tynan Doyle Professor of Epilepsy and Director of the Columbia Comprehensive Epilepsy Center. She returned in 2004 and sees patients in the Epilepsy Clinic. She is currently the Chief Medical Officer for NeuroPace, a company focused on brain stimulation for epilepsy.

Josef Parvizi, MD, PhD
Professor of Neurology & Neurological Sciences
Director of Stanford Program for Intractable Epilepsy

Dr. Parvizi’s clinical training is from Mayo Clinic- Rochester, BIDMC-Harvard University, and UCLA. His major interest is in the study of seizure propagation and treating patients with intractable epilepsy. His special expertise is in detecting the epileptic source in patients with uncontrolled seizures and mapping the brain circuitries that underlie development and spread of seizures. He performs functional brain mapping of the brain during epilepsy surgery evaluations. Dr. Parvizi is also the Director of the Stanford Human Intracranial Cognitive Electrophysiology Program (SHICEP), and is involved in multidisciplinary collaborative research projects with several Stanford principal investigators to understand how different parts of the human brain work and how their function may be broken during seizures.

Babak Razavi, MD, PhD
Clinical Assistant Professor of Neurology & Neurological Sciences

Dr. Razavi's clinical interests are in medically refractory epilepsies and using high density EEG (electroencephalogram) for better localization of seizure foci. His research areas include using engineering techniques for analyzing EEGs, medical devices for evaluation and treatment of epilepsy, and using seizures as a model for understanding consciousness.

Adult Epilepsy Fellows

Zahra Sadat-Hossieny, MD

Zahra was born and raised in the Midwest. She received her M.D. from the George Washington University School of Medicine, where she also attained a Certificate in Global Health through her international travels. She holds a business certificate in French and is fluent in multiple languages. She completed her residency in neurology at The Ohio State University where she served as chief of resident education in her final year. She has particular interest in integrating advancements in technology into neurologic treatment to further the effectiveness and efficiency of care. She also looks forward to examining the complex interactions of epilepsy and cognition, with particular focus on pregnancy and women’s health. Her ultimate goal is to provide the best available care to patients.

Dominic A Hovsepian, MD

Dominic Hovsepian was born and raised in Los Angeles, California and attended college at UCLA where he received a B.S. in Mathematics. After college, he attended Weill Cornell Medical College where he earned his M.D. He then completed an internship at UC Irvine followed by residency in Neurology at UCLA where he received awards as a medical educator and served as Chief Resident in his final year. Dr. Hovsepian is interested in medical education, clinical research, and patient care. He chose to attend Stanford for fellowship to treat patients with medically refractory epilepsy.


Aditya Joshi, MD

Aditya Joshi grew up in Cincinnati, OH, and went to undergraduate at the Massachusetts Institute of Technology, where he received an S.B. in Brain and Cognitive Sciences and an S.B. in Physics. He earned his MD at the University of Pittsburgh School of Medicine. He completed his internship in Internal Medicine at the Santa Clara Valley Medical Center in San Jose, followed by Neurology residency at Stanford. Dr. Joshi is very interested in the application of medical devices that utilize electromagnetic fields to interact with the body for the diagnosis and treatment of medically refractory epilepsy and other neurological disorders. He participated in the Stanford Biodesign Innovation course during residency, and plans to pursue medical innovation in both devices and pharmaceuticals for the treatment of patients. He also enjoys teaching residents and medical students.

Yi Li, MD, PhD

Dr. Yi Li received her M.D. and Ph.D. from Central South University in China, conducting her Ph.D. research as a visiting graduate student at UCLA. She received two national grants in China to research the role of neurogenesis in animal models of refractory temporal lobe epilepsy. She also participated in epilepsy clinical research at UCSF prior to her neurology residency.  Dr. Li received her residency training from University of Massachusetts Medical School, during which time she received a Safety and Quality Award from the American Academy of Neurology. Dr. Li is currently an epilepsy fellow at Stanford with interests in medically refractory epilepsy management, epilepsy clinical research, and improving quality of patient care.

Matthew Markert, MD, PhD

Dr. Markert studied bioscience and engineering at Drexel University, and implanted brain/machine interface neural prosthetics before joining the physician scientist training program at the University of Miami. His doctoral work was in public health epidemiology, especially population biostatistics and neuroimaging markers of cerebrovascular disease, and he did post-doctoral study at the National Institute on Drug Abuse in clinical trials of psychoactive exposure (e.g. MDMA, THC, JWH018/073) that included evaluation of fMRI features against subject report of emotional or hallucinatory effects. His clinical training in neurology was at the University of Kansas Medical Center, where he was “Resident of the Year” for consecutive years before he joined the Comprehensive Epilepsy Department at Stanford University. Dr. Markert collaborates on research to optimize machine learning for EEG, and is co-investigator on clinical trials for artificial intelligence in epilepsy treatment as well as testing non-invasive neuromodulation for human cognitive performance enhancement. He is particularly interested in the use of intracranial depth electrodes and seizure to understand the influence of electrical change on altered states of consciousness, and methods to expand bandwidth limits and machine learning to optimize transcortical information transfer.

Advanced Practice Providers

Mimi Callanan, RN, MSN, ACNS-BC
Epilepsy Clinical Nurse Specialist

Ms. Callanan has many years experience as a Clinical Nurse Specialist in Epilepsy. She has been in this role at Stanford since the Center opened in 1990. She received her undergraduate degree at St Louis University and her graduate degree at the University of Pennsylvania.  She is a past member of the Professional Advisory Board of the Epilepsy Foundation of America. She is a past President of the Epilepsy Society of San Francisco and was on the Board of Directors of the Epilepsy Foundation of Northern California. She is author of several publications pertaining to education of patients and families about epilepsy, and to the impact of epilepsy on life.

Bonnie Pamiroyan, RN, MSN, CFNP
Nurse Practitioner

Bonnie Pamiroyan has been with the Stanford Comprehensive Epilepsy Center since 1994. She received her BSN from Baylor University, and her MSN from Holy Names College.  She is a past member of the Board of Directors for the Epilepsy Foundation of Northern California. Providing patient care services as a Family Nurse Practitioner to patients with epilepsy, a special focus of her practice has been providing pregnancy and family planning/health management to women with epilepsy.

Tenzin D. Lama, DNP, FNP, CNL, RN
Nurse Practitioner

Tenzin Lama received her DNP (Doctor of Nursing Practice) with Family Nurse Practitioner degree from University of San Francisco. She has also received her MSN- CNL (Clinic Nurse Leader) from the same university. Tenzin joined the Stanford Comprehensive Epilepsy Center in 2016 and has been working as a Nurse Practitioner in providing care and coordination of services for patients with Epilepsy.