Michael Johnston, PA-C

With over 30 years of orthopaedic experience, Michael Johnston enjoys coming into work each day knowing that he is improving the lives of his patients and getting them back to what they love to do.

General Surgery

Rachel is a board certified Physician Assistant with a strong background in surgical services. Rachel joined the Mahaska Health general surgery team in 2020. She earned her Master of Science in Physician Assistant Studies from Marietta College in Ohio. She most recently worked at Fairfield Medical Center in Cardiothoracic Surgery and holds years of clinical…

Mark Zacharjasz, MD

Hospice Medical Director, Family Practice, Hospice

Dr. Mark Zacharjasz serves as Mahaska Health Hospice Medical Director and believes in offering his patients the best possible treatments and advice while upholding their values and autonomy. He accomplishes this by understanding each patient as a whole through the context of their life. Dr. Zacharjasz is passionate about helping patients and their families through…

Occupational and Public Health

Arthur grew up in Illinois and spent the last 5 years as an intensive care unit nurse at Northwestern Memorial Hospital in Chicago. Arthur graduated with honors from DePaul University with a Master of Science in nursing and went on to earn his Advanced Registered Nurse Practitioner license from North Park University School of Nursing.…

Alyssa Zacharjasz, DPM

Alyssa Zacharjasz, DPM, AACFAS, FACFAOM, has been serving with Mahaska Health since 2018. She is a small town Iowa native and has always wanted to practice medicine in a rural setting. Alyssa attended the University of Iowa as well as Des Moines University before completing a rigorous surgical residency program at St. Mary’s Medical Center…

Joseph Whitman, DO

Ear, Nose, Throat, Visiting Specialist

Dr. Joseph Whitman is at Mahaska Health the 1st, 2nd & 3rd Friday every month. To schedule an appointment, call Surgical Associates, LLP at 641.236.2585. Specialty Ears, Nose, Throat Education A.T. Still University of Health Science, Kirksville, MO Residency A.T. Still University of Health Science, Kirksville, MO Location Visiting Specialist, Mahaska Health, Oskaloosa, IA

Ryan Vincent, MD

Ophthalmology

Dr. Ryan Vincent and Dr. Reid Turner are at Mahaska Health every 3rd Thursday. To schedule an appointment, call Wolfe Eye Clinic at 515.232.2450. Specialty Ophthalmology Board Status American Board of Ophthalmology Professional Associations American Academy of Ophthalmology American Glaucoma Society Association for Research in Vision and Ophthalmology Education University of Colorado, Denver School of…

Family Practice & Walk-In Clinic

  Leah VanLoon, ARNP serves as a provider for the Walk-In and Primary Care clinics at Mahaska Health. VanLoon is from the Eddyville area and joined Mahaska Health with 16 years of prior nursing experience, most recently having worked as a Nursing Supervisor at ChildServe in Johnston, Iowa. She began her nursing education at Indian…

Ophthalmology Dr Turner visiting specialist to Mahaska Health

Reid P. Turner, M.D., received his Bachelor of Arts at Central College and went on to receive his Medical Degree with a distinction in teaching at the University of Iowa. While doing his transition years at Iowa Methodist Medical Center, he even completed a rotation through Wolfe Eye Clinic. Dr. Turner excelled during his ophthalmology…

Jess Tokle

Family Practice

Family Nurse Practitioner Jessica Tokle decided to go into medicine because she enjoys helping patients and learning from them. Originally from Grinnell, Jessica is excited to be close to home again. During her first year of college, she discovered her passion for nursing and decided to obtain her masters in nursing. Jessica received her Family…