Meet Our Medical Professionals & Staff

  • Dr. Dhuna
  • Our Office Management Team
  • Meet the nurses at our main office.
  • Our team at the main office
  • Meet our administrative assistants
  • We do our best to make the check in experience as smooth as possible
  • Our waiting room
  • Our examination room
  • Our examination room

Anil Dhuna, M.D., FAAN, FAASM

Dr. Anil Dhuna

Dr. Dhuna received his medical degree from the United Kingdom at the University of Wales College of Medicine. He completed his Neurology Residency and Epilepsy Fellowship at the University of Minnesota.


After the appointment of Assistant Professor at the University of Minnesota, he started his private practice in Southeast Iowa in 1994.

Presently, Dr. Dhuna is a Clinical Adjunct Assistant Professor of Neurology at the University of Iowa. He holds the position of Director of Inpatient Rehabilitation, Sleep Lab and EEG Lab and Primary Stroke Program at Great River Medical Center. He is also the Director of the Sleep Lab at the Keokuk Area Hospital and Ft. Madison Community Hospital. Dr Dhuna is Board Certified in Neurology, Clinical Neurophysiology, Sleep Medicine and Headache Medicine.

Rahul Khanna, M.D.

Dr. Rahul Khanna

Dr. Khanna received his medical degree from Government Medical College, Amritsar, India (2004-2009). He completed his Neurology Residency at the Baylor College of Medicine in 2019, and his Clinical Neurophysiology fellowship at The University of Texas Health Science Center, in 2020, both in Houston, Texas. He is Board Certified in Neurology and Board Eligible in Clinical Neurophysiology and Electrodiagnostic Medicine.

Dr. Khanna works with patients with all types of neurological problems and performs diagnostic procedures including EEGs and EMG/NCVs. He also administers injections such as Botox for medical diagnosis and treatment.

Becky Zwanziger, ARNP

Becky Zwanziger, ARNP

Ms. Zwanziger has been in practice for over 5 years. Her career includes years in the areas of Cardiology, Urgent Care and Family Medicine. Becky completed her ARNP at Allen College, specializing in Acute Care.

Becky provides neurological evaluation and treatment in the areas of Alzheimer’s Disease, Chronic Migraines and Sleep Disorders as well as seeing other neurological conditions including stable Epilepsy patients, and working closely with Dr. Dhuna at Great River Medical Center with the Inpatient Rehabilitation Team.

Mikhail Shkiryak, ARNP

Mikhail Shkiryak

Mikhail Shkiryak, ARNP works primarily with patients who have headaches, memory disorders, and sleep disorders. He is trained in performing Botox injections and occipital nerve blocks. Mikhail also treats a variety of other neurological conditions such as Parkinson’s disease and Epilepsy in collaboration with the medical team. Mikhail obtained his Doctorate of Nursing Practice at the University of Iowa. Mikhail has lived in rural Iowa for the past 18 years and understands the need for access to neurological care in the area. Mikhail is passionate about meeting the needs of rural patients and providing much-needed specialty care.

Mikhail’s primary clinics are in Ottumwa and Fairfield, Iowa. He also has satellite clinics in Albia, Pella and West Burlington, Iowa. During the Covid19 pandemic Mikhail helped champion Telehealth services and has continued to provide neurological care using this technology. Where appropriate, he hopes to continue offering Telehealth services as an option to his patients subsequent to this crises.

Cameron Blank, MMS, PA-C

Cameron Blank

Cameron is a recent graduate of Baldwin Wallace University in Berea, Ohio with a Master's in Physician Assistant Studies. He grew up in Geauga County outside of Cleveland, Ohio. Cameron attended Ohio Wesleyan University and graduated from George Mason University, in Fairfax, Virginia with a B.S. in Economics.

Prior to starting the Physician Assistant program, Cameron worked as a nurse aide at the Cleveland Clinic on a Cardiac Stepdown unit and volunteered in the Emergency Department. He has a passion for preventative healthcare with a special interest in sleep medicine, headaches, and dementia. Cameron also enjoys cycling and kayaking, which he looks forward to continuing in Iowa.