Alicia Knox, ARNP

Walk-In Clinic

Alicia Knox, ARNP-BC. To schedule an appointment with Alicia Knox, ARNP-BC, please call Mahaska Health at 641.672.3360. Specialties Walk-In Clinic Education Graceland University: Bachelor of Science in Nursing; Masters of Science in Nursing Board Status Board of Nursing Professional Associations American Nurse Credentialing Center ANCC Board Certification

Lindsey Herny, RN

Director Surgery Services

Jon Laverty – CRNA. Jon joined our surgery CRNA team from Kentucky after he and his wife Tracy visited Mahaska Health it was apparent to them that the hospital and community was a place that felt like home! Jon has 28 years of experience and has a very simple desire to help others and knew…

Walk-In Clinic, Pediatrics & Primary Care

Tonya Horn – ARNP. Tonya was born and raised in Iowa as an Oskaloosa native. She will begin serving patients at Mahaska Health as a Pediatric Nurse Practitioner after years of providing care for the community in our Emergency Room as an RN. Tonya started her nursing career in a Pediatric Intensive Care Unit and…

Pediatrics, Family Practice


Orthopaedic Specialist, Fellowship-trained

Michael Shaw, PA-C, MPAS is a Nationally Certified, Masters and Fellowship-trained Physician Assistant. Shaw completed his Fellowship training in Orthopaedic Surgery at Wright Patterson Medical Center at Wright Patterson Air Force Base in Ohio. Mike Shaw provides comprehensive general orthopedic care and assists in surgical cases to include procedures for complex orthopaedic trauma, total joint…

Erica Strunk, RN

Birthing Center Director

Jill Mitrisin, RN

Allergy, Immunology & Pulmonology

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Lynae Boender, LPN

Occupational Health

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Heidi Powers, ARNP, joined the Mahaska Health Walk-In Clinic Care Team in February 2021. She is happy to be back home in this community, as her hometown is Barnes City, Iowa. Heidi earned her Master of Science in Nursing (Family Practice) through Clarkson College in Omaha, Nebraska, and is certified through the American Academy of…