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Seema L. Clifasefi, PhD, MSW (she/her)

Licensed Clinical Social Worker (LICSW), CEO, Founder

Dr. Seema Clifasefi leads HaRT3S as CEO and co-founder, bringing together her expertise as a licensed clinical social worker and her Ph.D. in cognitive and experimental psychology to transform how we approach substance use treatment in Washington state and beyond.

For nearly 20 years, she’s been at the forefront of developing innovative harm reduction strategies that work in the real world. As someone who has dedicated her career to supporting people who use substances, Dr. Clifasefi understands that effective treatment must be both scientifically sound and deeply human.

At HaRT3S, she’s putting this philosophy into action. Her visionary leadership has shaped the company into a pioneer of evidence-based harm reduction methods, while her strategic approach ensures these life-changing services reach the people who need them most. Whether she’s developing new treatment programs, building partnerships with healthcare providers, or guiding the company’s growth, Dr. Clifasefi keeps one goal in mind: making effective, judgment-free support accessible to everyone.

Under her guidance, HaRT3S is revolutionizing harm reduction treatment through a combination of innovative technology, comprehensive professional training, and community-centered solutions. Dr. Clifasefi’s commitment to excellence and compassion continues to drive the company forward, ensuring that harm reduction strategies reach more communities and change more lives every day.

For more, please see Dr. Clifasefi’s CV.

Dr. Clifasefi's Clients

  • Woodland Park Zoo
  • Seattle Aquarium
  • YWCA of Seattle, King County, Snohomish County
  • Whatcom County Health and Community Services
  • Coconino County Health and Human Services
  • Compass Health
  • Capital Recovery Center
  • Mental Health Technology Transfer Center Network (SAMHSA)
  • Friends of Youth

Publications from Dr. Clifasefi