MS Specialists
A Team of Professionals with a Singular Focus: Your Wellbeing
At the Boster Center, we’ve assembled a care team of healthcare professionals who are committed to providing comprehensive care with the highest level of integrity.
Get to Know Us
Our treatment strategy involves a comprehensive interdisciplinary approach where we place the patient at the center of all of our decisions. Beyond making your MS boring, we help manage chronic symptoms to help you live your best life. Options extend beyond multiple sclerosis to include headache pain management, infusion therapy, counseling on the use of vitamins and dietary supplements, and healthful lifestyle changes to relieve symptom discomfort and improve treatment outcomes. Our team of medical professionals is here for you.

Aaron Boster, MD
President, MS Specialist
Dr. Boster grew up in Columbus, Ohio, and attended undergraduate school at Oberlin College. He earned his MD at the University of Cincinnati College of Medicine and completed an Internal Medicine and Residency in Neurology internship at the University of Michigan. He then completed a two-year fellowship in Clinical Neuroimmunology at Wayne State University.
Dr. Boster participates in the Interstate Medical Licensure Compact. He is currently licensed to practice in Ohio, Alabama, Illinois, Indiana, Kentucky, Michigan, Tennessee, Texas, West Virginia, and Wisconsin. All new patients are required to have their first appointment in person at The Boster Center for Multiple Sclerosis.
Dr. Boster has been intimately involved in the care of people impacted by Multiple Sclerosis; He has been a principal investigator in numerous Clinical Trials, trained numerous Multiple Sclerosis Doctors and Nurse Practitioners, and published extensively in medical journals. He lectures to MS patients and providers worldwide with a mission to EDUCATE, ENERGIZE and EMPOWER people impacted by multiple sclerosis.
He lives in Columbus, Ohio, with his son Maxwell.
Specialties & Qualifications
- Specialties: Multiple Sclerosis, Clinical Research, Collaborative MS Care
Education & Medical Training
- Neuroimmunology Fellowship
Wayne State University, Detroit, Michigan 2006-2008 - Neurology Residency
University of Michigan, Ann Arbor, Michigan 2003-2006 - Medical Internship
Michigan State University, 2003 - Doctor of Medicine
University of Cincinnati, Cincinnati, Ohio 1998-2002
Certification & Licensure
- Boards Neurology
Ohio, 2008-present
Michigan, 2006-2008 - Medical Licensure
Ohio, Alabama, Illinois, Indiana, Kentucky, Michigan, Tennessee, Texas, West Virginia, and Wisconsin
Honors & Awards
- Clinician Champion of the Year, National Multiple Sclerosis Society, 2019
- Columbus CEO, Healthcare Achievement Award, Practitioner of the year 2019
- Distinguished Educator, Riverside Methodist Family Medicine Residency Program, 2018
- Top Doctors, Neurology, Columbus Monthly Magazine, 2017-present
- John F. Kurtzke MD Memorial Lecture, Key Note CMSC, New Orleans, 2017
- Hall of Fame Inductee, Gahanna Lincoln High School, Gahanna Ohio 2015
- Residency Mentorship Award, OSU College of Medicine, 2014
- Teacher of the Year, Neurology, OSU College of Medicine, 2013
- Kung Fu Award, OSU Neurology Residency Program 2010
- Fellowship Award, Partners Multiple Sclerosis Program at Brigham & Women’s Hospital 2006-2008
- Bronze Beeper Award for Excellence in Medical Student Teaching, University of Michigan, 2006
- Physician in Training Travel Grant, ECTRIMS committee, 2004
- Bronze Beeper Award for Excellence in Medical Student Teaching, University of Michigan, 2003
- BA with Highest Honors, Neuroscience, Oberlin College, 1998
- Stetson-Heiser Award for Excellence in Undergraduate Research, Oberlin College, 1998
- Sigma Xi Scientific Research Society, Oberlin College, 1998
- Phi Beta Kappa, Oberlin College, 1998
Valerie Gregory, APRN-CNP
Certified Nurse Practitioner
Valerie Gregory has over 15 years of experience in the healthcare industry and specializes in the care of oncology patients as well as those with neurological disorders, spinal cord injuries, and traumatic brain injuries. In addition to her work with The Boster Center for MS, Valerie has been on the care teams at Great Lakes Practitioners, LLC, and The Ohio State University Wexner Medical Center-Dodd Hall. As a CNP, she is trained to diagnose and manage self-limiting and chronic conditions while emphasizing health promotion and disease prevention. In the course of her work, she is called upon to order, conduct and interpret diagnostic and laboratory tests; prescribe pharmacological agents and non-pharmacological therapies; teach and counsel patients and colleagues.
Valerie has known since she was a young girl that she wanted to be a nurse who helps others through their most difficult times. As a nurse practitioner, she is able to care for her patients throughout their entire lifespans. In her own words, she “cannot think of anything more rewarding or satisfying.” Valerie enjoys traveling to new places, spending time outdoors, trying out new restaurants and going to concerts.
Specialties & Qualifications
- Specialities: Neurological Disorders, Spinal Cord Injuries, Traumatic Brain Injuries, Oncology
Education & Medical Training
- Master of Science, Nursing APRN-CNP
The Ohio State University, 2018 - Bachelor of Science, Nursing
The Ohio State University, 2009 - Associate of Applied Science, Nursing
Shawnee State University, 2004
Certifications & Licensure
- Adult-Gerontology Primary Care Nurse Practitioner - AANP
- DEA Certification
2019 - Certified Nurse Practitioner License
State of Ohio 2018 - Certified Rehabilitation Registered Nurse (CRRN)
2013 - Registered Nurse License
State of Ohio 2004 - CPR Certified, Basic Life Support
2023


Heather Hamilton
Chief Operating Officer
Boster Center Chief Operating Officer, Heather Hamilton, holds a Bachelor of Science in Nursing from Ohio University, and is a certified registered nurse of infusion. She knew from an early age that she wanted to provide care to patients and chose nursing to pursue that end. She grew even more appreciative of her health care experience when she helped an immediate family member navigate through multiple sclerosis treatment. Heather enjoys outdoor activities with family and friends, swimming, biking and softball.

Erin Woodburn
Clinical Research Manager
The Boster Center’s Clinical Research Manager, Erin Woodburn, has been involved in research for over 20 years. She started in neurology with Dr. Boster in 2012. Erin holds a Bachelor of Science in Healthcare Management and Administration. She enjoys outdoor activities with her family. During football season, they love to watch OSU and Pittsburgh Steelers games.

Diane Borchart
Finance Manager

Tiffany Gist
Infusion / Refresh Ohio Manager

Sarah Zidar
Clinic and Revenue Cycle Manager

Ashley Wattenbarger
Procedure Specialist
Ashley Wattenbarger is the Boster Center’s Procedure Specialist. A licensed practical nurse, Ashley came to the Boster Center for Multiple Sclerosis after working with patients who had suffered spinal cord and brain injuries. She enjoys cooking, hiking and traveling.

Ellen Toterhi
Clinic Nurse

Jamie Eichensehr
Infusion Nurse
Jamie Eichensehr is passionate about making a difference in the lives of others. That passion led her to become an Infusion Nurse at the Boster Center for Multiple Sclerosis. Jamie was educated at Columbus Community College and Ohio University. In her leisure time, she enjoys drawing, painting, reading, and hanging out with her family.

Kristen Gonzales
Sr. Revenue Cycle Specialist
“Helping people was always a passion of mine,” says Kristen Gonzales, a Sr. Revenue Cycle Specialist at The Boster Center. Everyday, she helps patients navigate the complexities of the healthcare system and get the treatment they need. Kristen’s healthcare training includes an Associate of Applied Science degree from Houston Community College’s Coleman Campus.

Amber Lombard
Credentialing Manager
Amber Lombard is the Boster Center’s Credentialing Manager. She holds an Associate Degree in Medical Office Management. Amber entered medicine to help people and improve the lives of her family members and those with whom she works. In her free time Amber enjoys crafting and spending time with her family.

Jennifer Kelson
Revenue Cycle Specialist
Jennifer Kelson is a Revenue Cycle Specialist at The Boster Center. She is a licensed practical nurse and has always had the desire to help and take care of people. She enjoys cooking, football, music, puzzles, and playing with her kids and grandkids.

Myra Christian-Rancy
Senior Clinical Research Coordinator
Myra joins our team as a Senior Clinical Research Coordinator. She carries a Bachelor of Science from Morgan State University. Her passion for working with and helping others to make a positive impact in their lives, as well as advocating for those unable to do so for themselves, lead her into a career of medicine and neurology. Myra enjoys working out, attending sports events, traveling and spending time with her family, volunteering in the local community, and always cheering for her Buckeyes and Steelers.

River Tam Boster
Clinic Dog / Good Girl
River Tam Boster leads the Boster Center’s Emotional Support team. She enjoys visiting patients and staff in the office and playing with her stuffed alligator, her most prized possession.

We Are Highly
Qualified
An expert medical team of MS focused clinicians and researchers are ready to help you with the comprehensive patient care you need.

We Care About You
Like Family
You’re not just another patient. You’re family and we treat you that way with care and compassion, along with expert clinical support and an abundance of hope.

We Are Here For You
When You Need Us
We understand MS flare ups can pose a challenge, so we’re prepared with critical diagnostic and therapeutic solutions when you need them most.

We Cut Out the
Bureaucracy
The bureaucracy that slows down care is gone. We eliminate extra steps and paperwork, so you can see the doctor faster and get the help you need right away.