Our Healthcare Providers

Tamara A. Miller, MDstaff_tamara

Board Certified in Neurology

Tamara Ann Miller, M.D., is a Board-Certified neurologist with Advanced Neurology of Colorado, LLC, in Fort Collins, Colorado, and works closely with Multiple Sclerosis Center of the Rockies, LLC, the most active Multiple Sclerosis medical center in Northern Colorado.

After earning her Doctor of Medicine at Tulane University School of Medicine in New Orleans, LA, 1986, she completed an internship and residency in Neurology at Baylor College of Medicine in Houston, Texas. Dr. Miller moved to Fort Collins in 1992 and has been an active member of the Colorado medical community ever since.

Dr. Miller is a Diplomate of the American Board of Psychiatry and Neurology.

Dr. Miller is a member of multiple advisory boards and is an international and nationally renowned speaker on Multiple Sclerosis with associated poster, abstract, and peer reviewed publications in the U.S. and abroad. She was elected the health professional of the year 2006 by the National Multiple Sclerosis Society Colorado Chapter and is currently a Clinical Instructor with the Department of Neurology at the University of Colorado School of Medicine.

Dr. Miller is also actively involved with Advanced Neurosciences Research, LLC, in Fort Collins, Colorado, and is the proud recipient of over 100 research grants and contracts. Dr. Miller has participated in Phase I-IV clinical trials evaluating a broad array of neurological agents on a spectrum of neurological diseases. Currently her main areas of research are in multiple sclerosis and migraine.



 Sarah Yang, MD

Board Certified in Neurology

Dr. Yang graduated magna cum laude from Washington University in St. Louis with a BA in biology and mathematics. She then went on to earn her medical degree from Case Western Reserve University in Cleveland, OH. She completed her internship and neurology residency at University of Illinois in Chicago, serving as chief resident in her final year. She completed her neurophysiology/neuromuscular fellowship at Stanford University.

Dr. Yang specializes in neuromuscular medicine and EMG with special interests in myasthenia gravis and ALS. She is board certified by the American Board of Psychiatry and Neurology and the American Board of Electrodiagnostic Medicine.

Dr. Yang enjoys spending time outdoors in her spare time. She enjoys hiking, skiing, and spending time with husband and dogs.


Sidarth Dasari, MD

Board Certified in Neurology

Dr. Dasari graduated from Indiana University in Bloomington, Indiana  with a BS in Biology. He went on to earn his medical degree from Indiana University School of Medicine in Indianapolis,  IN. He completed his internship and neurology residency at the University of Vermont which was followed by a fellowship in Multiple Sclerosis. Dr. Dasari specializes in the diagnosis and care of patients with multiple sclerosis.

In his free time Dr. Dasari enjoys activities such as nordic skiing, backpacking, and  photography.


Courtney Weir, MSN, FNP

Courtney Weir graduated with her Family Nurse Practitioner, Master of Science in Nursing, from South University in Savannah Georgia.  She obtained her Bachelors of Science from University of Texas at Arlington.  Courtney has spent the last five years specializing in Neurology.  Prior to obtaining her Family Nurse Practitioner, she worked at the bedside as Registered Nurse for the states of Illinois and Texas for over 15 years with experience in intensive care, pediatrics, postpartum, emergency care and neonatal intensive care.

She is certified through the American Academy of Nurse Practitioners.

Courtney was born and raised in Illinois, spent several years residing in Texas and moved to Colorado in 2017 to pursue her dreams and enjoy this beautiful state and love of the outdoors.  Courtney enjoys spending time with her two daughters and sharing her love of skiing, hiking and enjoying beautiful Colorado.


Kimberly Eisenbach, MSN, FNP, AG/ACNP

Kim received a Bachelors of Science in Microbiology and Masters of Sciences in Environmental Health from Colorado State University in Fort Collins before pursuing a Bachelor of Science in Nursing from the University of Northern Colorado in Greeley.  Upon completion of the Nursing degree, Kim worked in the ICU at North Colorado Medical Center in Greeley, Colorado for 7 years before graduation with her Family Nurse Practitioner/Adult Gerontology/Acute Care Nurse Practitioner, Master of Science degree from Colorado State University in Pueblo, Colorado.  Kim has now been specializing as a Nurse Practitioner in Neurology for the past five years.

Kim is dual certified through American Nurses Credentialing Center and is a member of the American Academy of Neurology.

Kim grew up in Colorado and loves spending time outdoors with her husband and two young boys.


Benjamin Miceli PA-C

Ben is a graduate of the military Interservice Physician Assistant Program (IPAP), receiving a Bachelor of Science in Physician Assistant Studies in 2012 and Master of Physician Assistant Studies (MPAS) in 2013 from the University of Nebraska Medical Center (UNMC).
Upon completion of his education Ben has worked in Neurosciences and Urgent Care, specializing in Neurology since 2014.
Ben is certified as a Physician Assistant through the National Commission on Certification of Physician Assistants (NCCPA) and a member of the American Academy of Neurology (ANA) and Society of Army Physician Assistants (SAPA).
Ben has lived in many states during his 28 year career with the US Army but has called Colorado home since 1989.
In his free time Ben enjoys spending time and adventuring with his amazing daughter Adelina and enjoying all the beauty and recreation Colorado has to offer.

Colleen Wallace PA-C

Colleen Wallace graduated from Fordham University with a Bachelor of Science in Psychology. She then earned her Master of Medical Science Degree and her Physician Assistant training at Arcadia University in Pennsylvania, graduating in 2022.

She spent two years working as a PA in pain management, specializing in chronic migraine. Colleen is certified as a Physician Assistant through the National Commission on Certification of Physician Assistants (NCCPA).

Colleen enjoys adventuring outdoors in her free time. She enjoys skiing, backpacking and live music.