Hospitalist, Inpatient Medicine

Dr. Mary Sarpong – Hospitalist – Inpatient Physician. Dr. Sarpong completed her residency at Piedmont Athens Regional Medical Center, and serves as a Hospitalist on our Inpatient Department. Her professional interests and clinical expertise lie in taking care of acute cases and stabilizing patients. Dr. Sarpong truly has a heart for people and that has…

Hospitalist, Inpatient Medicine

Dr. Kyle Witt – Hospitalist – Inpatient Physician. Dr. Witt completed his residency at the University of Arizona, and serves as a Hospitalist on our Inpatient Department. His professional interests and clinical expertise lie in the areas of public health and geriatric care. Dr. Witt truly has a heart for people and that has driven…

General Surgeon

Dr. Jesse Van Maanen joined the Mahaska Health Partnership medical team as a General Surgeon. Dr. Van Maanen grew up in Pella and Leighton and enjoyed the small communities in which he lived for their rural opportunities, close-knit friendships, and family values. He was first exposed to medicine and surgery when he had to undergo…

Family Practice, Obstetrics

Hannah Thompson is serving Mahaska Health as a Family Practice and Obstetrics Physician. Having grown up in the Midwest, Hannah is excited to begin serving Oskaloosa and the surrounding communities with her fellow residency peers, Drs. Preston Sereg and Eric Wood. Dr. Thompson treats her patients as she would treat her closest family members, bringing…

Family Practice, Obstetrics

Dr. Preston Sereg – Family Practice & OB Physician serves the Mahaska Health community as a Family Practice with Obstetrics Physician. Dr. Sereg was born and raised in Oskaloosa and has worked in healthcare for the past 9 years. Dr. Sereg chose to practice at Mahaska Health because he wanted to take part in and…

Family Practice, Obstetrics

Dr. Trish Millner – Family Practice & OB Physician is joining the Mahaska Health Community after 9 years of training, teaching and working in healthcare as a Family Practice & Obstetrics Physician! Dr. Millner is fellowship trained in high-risk Obstetrics and provides a range of family practice and women’s health services for patients. Dr. Millner…

Family Practice, Obstetrics

Dr. Eric Wood – Family Practice & OB Physician will be serving the Oskaloosa community with his passion for treating rural Iowans with quality care, close to home! Eric is an Oklahoma native and was born and raised in a rural community, so Mahaska Health gives him that comfort of home! Eric chose to become…

Mark Zacharjasz, MD

Family Practice, Hospice

Dr. Mark Zacharjasz chose a career in family medicine due to his love of helping people and science. At Mahaska Health, Dr. Zacharjasz 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…

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