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Derek C Hennessy, PA-C
I speak: English
My gender: Male
Where I practice
About me
I was born in Simi Valley, California, but I've lived in Spokane, Washington, since I was 3 years old. I have been married to my wife for 18 years and have children that are active in hockey, dance and academics. I love helping people. Serving as a combat medic in the military also inspired me to pursue a career in medicine.
About my practice
I'm honored that patients trust me with their medical care and have confidence in my decision-making skills. I joined Kaiser Permanente because I love preventive medicine and a team approach to health care. I believe in treating people with dignity and respect and listening to them without judgment. I also favor shared decision-making in an aim to improve a person's overall health and well-being. I see patients of all ages, including children and seniors. I enjoy adolescent medicine and sports medicine, including injury treatments and prevention. I also treat patients with opioid addiction.
How I thrive
I've coached hockey as a volunteer for more than 17 years. My family and I love hiking, boating, and camping. My favorite destination is Priest Lake, Idaho. I enjoy spending time there with my family. I also eat healthfully and treat everyone as a friend. And I take nothing for granted.
My office
Referral requirements
You don’t need a referral to see this providerLanguages spoken by medical staff
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Medical groups, locations, and plans
Kaiser Foundation Health Plan - Wa
Lidgerwood Medical Center
Plans and networks accepted
- 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
- Providence Caregivers
- SoundChoice
- Swedish Caregivers
- Virtual Plus - Connect Network
Contact information
- Fax
- 509-482-5071
- Main number
- 509-482-4402
- TTY Washington Relay Service
- 1-800-833-6388 (toll-free TTY for the hearing/speech impaired)
My training, certifications & licensing
Professional school
Medex NorthwestJoined Kaiser Permanente
2021Provider ID
029832License information
Look up this clinician’s credentials at the Washington State Department of Health website.
National Provider Identifier (NPI)
1073685285Cultural Competency Training (CCT)
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12/10/2025