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Cassedy M Mahrer Owen, DO
I speak: English
My gender: Female
Where I practice
About me
I was born in Tucson, AZ, spent most of my life in a small town in North Dakota, and later lived in Minnesota. I studied Creative Writing and Music at Macalester College in St. Paul, MN. I wanted to be a physician after watching the movie Patch Adams, at age 8, and was fortunate to work with Patch Adams at his Gesundheit! Institute during my summers in college. While volunteering there, I supported his school for designing society and workshops for medical students on bedside manner. The experience profoundly affected my journey in medicine and emphasized the incredible importance of infusing humor and joy into medicine whenever possible. I met my husband during medical school, and we moved to his hometown of Bremerton, WA in 2020. We have started a family, and love getting to be outside year-round in this wonderful part of the country.
About my practice
I am an internal medicine doctor, meaning I specialize in managing chronic diseases in older adults, such as diabetes, shortness of breath, heart failure, liver disease, and bleeding disorders. It is an honor to partner with patients on their journey through life and I take this responsibility very seriously. I like to practice compassion, active listening, and collaborative practice with individuals. My areas of interest include reducing bias in medicine, seeking opportunities to improve mental health, seeing a patient as a whole person, and practicing as a Health at Every Size Physician. The practice is a new movement in medicine that considers holistic health to be on a continuum that varies with time and a patient's circumstance, body size, medical condition, and economic status. I also have a background in academic medicine and love teaching medical students, residents, and my patients about the pathophysiology of acute and chronic disease - especially of the heart, kidneys, pancreas, and lungs.
How I thrive
I enjoy going for walks with my husband and toddler in the forests and mountains. We love to watch funny movies and to play outside whenever possible. I am a self-taught watercolorist and attempt to capture the beauty of our surroundings through plein air painting and illustration. My family loves music, and I play ukulele, piano and sing whenever possible.
My office
Referral requirements
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Medical groups, locations, and plans
Kaiser Foundation Health Plan - Wa
Silverdale Medical Center
Plans and networks accepted
- Access PPO
- Boeing HMO Network
- Core
- Elect PPO
- Medicare Advantage HMO Anchor IND Part D
- Medicare Advantage HMO Group
- Medicare Advantage HMO GRP Part D
- Medicare Advantage HMO IND Part D
- Medicare Advantage HMO Individual
- Microsoft
- Options
- Options Federal
- Providence Caregivers
- SoundChoice
- Summit PPO
- Swedish Caregivers
- Virtual Plus - Connect Network
Contact information
- Fax
- 360-307-7304
- Main number
- 360-307-7300
- TTY Washington Relay Service
- 1-800-833-6388 (toll-free TTY for the hearing/speech impaired)
My training, certifications & licensing
Medical school
This information is not available at this time.Board certification
Internal Medicine
American Board of Internal MedicineTo verify board certification for an individual practitioner, please visit the American Board of Medical Specialties, the American Medical Association, or the American Osteopathic Association websites.
Medical training
This information is not available at this time.Joined Kaiser Permanente
2023Provider ID
133212License information
Look up this clinician’s credentials at the Washington State Department of Health website.
National Provider Identifier (NPI)
1053775742Cultural Competency Training (CCT)
Kaiser Permanente providers complete accredited cultural competency training.My hospitals
This information is not available at this time.
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02/19/2026