Keenan M. Horness, PA-C, MPAS

Physician Assistant Surgical


  • Center For Advanced Care - Froedtert Hospital
  • 8900 West Doyne Ave.
  • Milwaukee, WI 53226

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Diseases and Conditions

  • Bone and Soft Tissue Sarcomas
  • Metastatic Bone Disease
  • Musculoskeletal Tumors
  • Vascular Anomalies of Bone and Soft Tissue

Treatments and Services

  • Complex Joint Reconstruction
  • Limb Salvage Surgery
  • Orthopaedic Rehabilitation
  • Orthopaedic Surgery
  • Musculoskeletal Oncology

Patients Ages Seen

  • Infant
  • Child
  • Adolescent
  • Adult
  • Senior


  • English

Hospital Affiliations

  • Froedtert Hospital – Milwaukee
  • Children's Wisconsin - Milwaukee – Milwaukee

Clinic Locations

Orthopaedic Center - Children's

map of clinics' locations


I attended Marquette University for both my undergraduate degree in Biomedical Sciences as well as my Master’s degree in Physician Assistant Studies, graduating in 2011. Upon graduation, I was lucky enough to quickly find my true calling to the field of Musculoskeletal Oncology. I did not go into medicine knowing this was the subspecialty that I would end up in, but it has become clear over the years that taking care of patients with benign and malignant bone and soft tissue tumors is my true passion.

I have such a strong sense of fulfillment knowing I am helping take care of patients to the highest level of care and compassion working alongside my supervising physician Dr. David King. I assist him in both the surgical and clinical setting.  I also have the honor of working with an amazing team and multidisciplinary group of people who share the same patient care model.  I went into medicine to make a difference and feel as though I have the opportunity to do this each and every day.

My care philosophy is The Golden Rule of Medicine: to treat each patient the way I would want myself or family member treated. I try to connect on a personal level and be a part of the support system during what is oftentimes a difficult medical journey.  I take the time to listen to the patient’s story, make an accurate diagnosis, and determine a treatment plan that includes the patient’s voice in the decision-making process.

One of my favorite quotes from Robert Byrne that I strive to uphold in my practice is as follows: “The purpose of life is a life with a purpose.” I have found my purpose in caring for my patients, and my hope is that during each encounter I make my patient feel better in some way often beyond what is outlined in any sort of treatment plan.

Education and Training

Master Physician Assistant Studies - Marquette University - Milwaukee, WI (2011)
Bachelor of Science Biomedical Sciences - Marquette University - Milwaukee, WI (2010)