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Ellen Lathi, MD

Dr. Lathi is the Director of the Elliot Lewis Center and a well-known speaker on treatment issues and wellness in MS. She participates in numerous clinical trials at the Center related to the treatment of MS, and she is widely recognized for her clinical expertise and comprehensive, personalized approach to patient care. She believes that the relationship between patient and physician should be an intimate one, where there is an ongoing dialogue with in depth patient education.

Dr Lathi, a board certified neurologist since 1980, has been recognized as a teacher of residents and medical students at Tufts University. She also directs the MS Service Dog Program, sponsored by the NMSS, in which Labrador retrievers are trained to assist patients with multiple sclerosis. She has repeatedly been one of Boston Magazine’s “Best Doctors” and one of US News and World Reports’ “Top Doctors.” She has received the prestigious Physician Health Care Professional Volunteer award from the Greater New England Chapter of the National MS Society. She is a member of the American Academy of Neurology, Chairman of the Clinical Advisory Committee of the Greater New England Chapter of the National MS Society, and a member of the Consortium of MS Centers.

When she is not in the office or emailing her patients, she loves spending time with her two grown children and their families, as well as designing and working in her garden oasis, and playing with and training her dogs.

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Joshua Katz, MD

Dr. Joshua Katz is the Co-Director of the Elliot Lewis Center and is a nationally recognized expert on multiple sclerosis and transverse myelitis. He participates in many clinical trials investigating new treatments for MS and sees patients in consultation from the entire New England area and beyond.

Dr. Katz is an Associate Professor of Neurology at Tufts Medical School, a board certified neurologist since 1999, and member of the American Academy of Neurology. He chairman of the clinical advisory committee of the New England Chapter of the National MS Society, and is a member of The Consortium of MS Centers. He has received multiple awards from Tufts Medical School for his skill and dedication to teaching. He is recognized for his sophisticated approach to diagnosis and treatment of neurological diseases, and for his focus on comprehensive care. He feels it is crucial to treat the whole person, not just their illness. Dr. Katz encourages his patients to ask questions and be actively involved in treatment decisions. He is devoted helping patients, their significant others, and their families understand the many aspects of MS, from complex treatment decisions to the impact on one’s personal life.

When not hard at work he enjoys spending time with his wife and daughter, training Jackson, reading, photography, cooking (a lot), and running (not so much).


Kenneth Gorson, MD

Kenneth C. Gorson, M.D. is a Professor of Neurology in the Department of Neurology at St. Elizabeth’s Medical Center, Tufts University School of Medicine, in Boston. Dr. Gorson has published over 90 original peer-reviewed research articles, book chapters, and reviews pertaining to Guillain-Barre´ syndrome, chronic inflammatory demyelinating polyneuropathy (CIDP), paraprotein associated neuropathies, vasculitic neuropathy, and various other inflammatory and immune-mediated disorders of the peripheral nervous system. His clinical and research expertise extends to patients with neuropathies associated with diabetes, connective tissue disorders, and cancer, inherited peripheral neuropathies, and disorders of muscle, myasthenia gravis, and amyotrophic lateral sclerosis. He has lectured nationally and internationally to neurological specialists and patient support groups on various topics in the field of neuromuscular diseases.

In addition to expertise in the medical management of numerous chronic neuropathic and musculoskeletal pain disorders, Dr. Gorson has extensive experience using botulinum toxin injections (Botox®) injections to treat many conditions including chronic headaches and spasticity.


Marissa Shackleton
Executive Director

Marissa is the Executive Director at The Elliot Lewis Center. She manages the day-to-day operations of the practice. She directs all aspects of the infusion center, supervises the clinical research program and manages the business. She has been part of the MS Center Team since 2011. Prior to becoming the Executive Director, she worked in clinical research, where she enjoyed working with clinical trials, learning about various disease modifying therapies and interacting with patients.

Marissa has a Bachelor of Science in Biology, concentration in neuroscience, from Boston College and a Master of Science in Health Communication from Boston University. Marissa is a national speaker on infusion center management and practice administration.

Outside of the office, Marissa is a member of the Marathon Strides Against MS Team; she ran the Boston Marathon in 2017, 2018 and 2019, raising over $40,000 for the National Multiple Sclerosis Society


Courtney Reeves, RN BSN, Infusion Nurse
Courtney joined The Elliot Lewis Center in 2016 as an infusion nurse. She received her Bachelor of Science in nursing degree from Salem State University in 2007, and then practiced as an oncology nurse in North Carolina. From there, she traveled to New Orleans where she transitioned to Emergency Medicine and discovered her passion for creole food! Courtney returned to New England in 2012 and joined the Emergency Nursing Team at Beth Israel hospital where she continued to hone her nursing skill set. She most enjoys building patient relationships and contributing to MS treatment advancements! In her free time, Courtney enjoys eating, hiking and traveling with her dog, Zoey.

Kathy Brown, RN BSN, Infusion Nurse
Kathy is a registered nurse, joining the infusion team in 2018.  Kathy is a graduate of Lasell College and Framingham State University earning a Bachelor of Science in Nursing.  Most recently Kathy has worked at New England Baptist Hospital in Pain Management. Kathy is energized by the opportunity to work with the experienced staff and amazing patients in the infusion center. When she is not working, Kathy is spending time with a large extended family, reading and supporting neighbors in her home town of Natick.


Kate McCusker, Infusion Coordinator

Kate joined The Elliot Lewis Center in 2017 as the infusion coordinator. Following her graduation from New England college in 2011 with a BS in psychology, she entered the healthcare field in her hometown of North Conway, NH where she gained administrative experience before moving to the Boston area. Kate’s favorite part of her job is learning about disease modifying therapies and building relationships with patients. She is thrilled to have joined such a motivated and supportive team and looks forward to the promising future of The Elliot Lewis Center. In her spare time, Kate enjoys being outdoors, cooking, and spending time with family, friends, and her dog.


Hannah Geils, Clinical Research Coordinator

Hannah began working with The Elliot Lewis Center following her graduation from Boston College in July 2017, where she received her Bachelor’s of Science in Biology.  Hannah has a passion for research; while at Boston College she worked at the Harvard School of Public Health as a research intern.  Hannah enjoys working with patients and learning about multiple sclerosis.


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India Stribling, Clinical Research Coordinator

India graduated in 2015 from the University of New Hampshire with a Bachelor’s of Science in Neuroscience, where she worked on an independent research study focusing on stress resiliency and behavioral depression.  Afterwards, she moved to Austin, Texas and entered the medical field where she was a medical assistant for an Orthopedic Hand Surgeon. She discovered a passion working with patients and the relationships she built with them. India returned to New England in 2018 and joined the ELC team and is thrilled to be working towards MS treatment contributions and being part of a motivated and intelligent group! Outside of work, India enjoys hiking, baking, photography and has plans to get a dog!

Hailey Cuomo Leonard, LICSW

Hailey is the Social Worker at The Elliot Lewis Center, joining the team in 2019. Prior to joining this position, Hailey graduated with a BA in psychology from the University of Notre Dame. She took a year off of school to participate as a Corps member for City Year Boston, then went on to get her Master in Social Work at Boston College. She has worked previously as an In Home Therapist in Boston, then as the Lead Clinician for a residential group home. Both of these jobs gave her a passion for helping individuals and families to work through difficult situations.  In her free time she enjoys reading, drinking coffee, and spending time with family.


Bethany Donovan, Clinical Assistant

Bethany joined The Elliot Lewis Center in 2018. She has a degree from Springfield college with a major in Psychology and minor in Rehabilitation and Disabilities. Bethany has a strong interest in nursing and volunteer work. You can find Bethany in the office administering functional testing for multiple sclerosis, processing authorizations for disease modifying therapies and drawing labs. She plans to pursue nursing school in the future.


Alexandra Potts, Clinical Assistant

Alexandra is the part-time Clinical Assistant at The Elliot Lewis Center. She joined the team after graduating from the University of Rhode Island with a BS in Biological Sciences. After working as a nursing assistant and volunteering at South County Hospital’s Emergency Department she realized her passion for the medical field. She loves working directly with patients, and enjoys being part of such a motivated and intelligent team!
Alex is currently attending nursing school and working part-time at The Elliot Lewis Center.


Georgia DeSoto, Medical Billing Specialist

Georgia joined The Elliot Lewis Center in 2018. She has been working in the medical billing field since 2009. She started her billing career in Collingswood, NJ. She grew up in a medical household; her mom was an ER nurse for 35 years, and her father was a Materials Manager for the OR at several hospitals in NJ. She always knew that the medical field was where she wanted to be. She is excited to have joined such an amazingly motivated and supportive team and looks forward to the promising future of The Elliot Lewis Center. Being a true Jersey girl at heart, she enjoys her time outside of work on the beach, cooking gourmet meals, and with her dog.


Tia Mastrogianis, Administrative Assistant

Tia is an Administrative Assistant at The Elliot Lewis Center. Following her graduation from the University of Massachusetts Dartmouth in 2014 with a BA in Psychology, she worked as a mental health counselor and community support worker dedicated to working with families. After pursuing a future in the medical field she became excited at the prospect of being a part of a unique and devoted team and looks forward to building relationships with patients and their families while learning more about MS. In her free time, Tia enjoys coaching cheerleaders, cooking & baking, and spending time with her family.

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Rachel Sanders, Administrative Assistant

Rachel is an Administrative Assistant at The Elliot Lewis Center. She graduated from the University of Washington in 2017, where she earned a BA in Sociology and a BS in Biology, as well as discovered her passion for working in the healthcare field. Rachel is excited to be part of such a supportive team and enjoys being able to build new relationships with patients. In her free time, Rachel enjoys reading, traveling, and spending time with her friends and family.