About Us | The Keiser Clinic

Our Story

The Keiser Clinic was founded with a simple mission: provide the kind of thorough, personalized neurological care that's increasingly rare in modern healthcare.

We've built a practice around patients who have been dismissed, misdiagnosed, or told there's nothing that can be done. We know that's often not true — it just means the right tests haven't been run.

Today, we see patients from across the United States and internationally, specializing in complex conditions like POTS, post-concussion syndrome, vestibular disorders, and dysautonomia.

What is Chiropractic Neurology?

A chiropractic neurologist has additional post-graduate training in clinical neuroscience after their Doctor of Chiropractic degree. This training focuses on understanding how the nervous system works and how to optimize its function through non-pharmaceutical and non-surgical means.

We combine advanced diagnostic technologies — transcranial Doppler, videonystagmography, computerized posturography, eye tracking — with evidence-based neurological rehabilitation to find and treat the root cause of symptoms.

This approach is particularly effective for conditions that don't respond to traditional medical management, because we're looking at the nervous system from a different angle.

Meet Our Team

Dr. Nathan Keiser

Board Certified Chiropractic Neurologist

Dr. Nathan Keiser specializes in the non-surgical, non-pharmaceutical treatment of dysautonomia, traumatic brain injury, and movement disorders. He achieved his diplomate in chiropractic neurology in 2010.

Dr. Keiser serves as Assistant Professor of Clinical Neurology for the Carrick Institute and conducts ongoing research presentations across North America and Europe.

Dr. Claire Keiser

Board Certified Chiropractic Neurologist / Administrative Lead

Dr. Claire Keiser specializes in dysautonomia, traumatic brain injury, and movement disorders. She achieved her diplomate status in 2010 from Life University.

Dr. Claire transitioned from clinical practice in 2018 to manage clinic operations while raising three children. She currently serves as the primary patient contact and clinical resource.

Dr. Erin Kepreos

Board Certified Chiropractic Neurologist

Dr. Erin Kepreos specializes in non-surgical, non-pharmaceutical treatments for dysautonomia, traumatic brain injury, and movement disorders. She achieved her diplomate status in 2023.

Dr. Kepreos holds a Bachelor of Science in Kinesiology from Queen's University and her Doctorate from Life University. Outside the clinic, she enjoys hiking, swimming, and skiing.

Dr. Alexa Tenwalde

Board Certified Chiropractic Neurologist / Fellow

Dr. Alexa Tenwalde specializes in dysautonomia, traumatic brain injury, and movement disorders. She achieved her diplomate status and fellowship recognition in 2023.

Dr. Tenwalde earned her Bachelor of Science in Biomedical Sciences and her Doctorate from Life University. Her interests include individualized rehabilitation programs for complex neurological conditions.

Dr. Corissa Mattson

Doctor of Chiropractic

Dr. Corissa Mattson grew up in Michigan's Upper Peninsula and earned her Bachelor of Science in Biology and Creative Writing from the University of Michigan. She interned at The Keiser Clinic before pursuing her Doctorate from Life University.

Dr. Mattson is currently studying for her neurology board certification.

Kelly Williams

Team Member

Kelly joined The Keiser Clinic in 2023 and creates supportive experiences for patients undergoing treatment. She draws from personal experience navigating syncope and post-concussion recovery.

Kelly holds a BFA from Michigan State University and is a mother of three.

What We Believe

Empathy & Compassion

We understand what it's like to be dismissed or told nothing is wrong. We listen, we believe you, and we work with you to find answers.

Partnership = Results

Your recovery requires your participation. We provide the expertise and the plan — you bring the commitment. Together, we achieve results.

No False Hopes

Your time is valuable. We promise to be honest, real, and straightforward with you regarding your success.

Precise Prescription

Applying the right treatments in the correct dosage for each individual patient is a primary reason for our patients' success.

About The Keiser Clinic