John J. Tiemessen
Clapp, Peterson, Tiemessen, Thorsness, Johnson, LLC • Anchorage, AK
Medical MalpracticeHealthcare
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Contact
Email
jjt@cplawak.com
Phone
Address
711 H St., Anchorage, AK, 99501, US
Professional
About
John J. Tiemessen is a distinguished attorney based in Anchorage, Alaska, specializing in medical malpractice law. As a Managing Member at Clapp, Peterson, Tiemessen, Thorsness, Johnson, LLC, John brings over three decades of legal experience to his practice, focusing on advocating for victims of medical negligence and ensuring accountability within the healthcare system. A graduate of Willamette University College of Law, where he earned his Juris Doctor in 1991, John has built a reputation for his meticulous preparation and persuasive courtroom presence. His foundational education in science, with a Bachelor of Science degree from Arizona State University in 1987, enhances his ability to understand and dissect the complex medical issues often at the heart of malpractice cases. Since joining Clapp, Peterson, Tiemessen, Thorsness, Johnson, LLC in 1996, John has successfully represented numerous clients, achieving significant settlements and verdicts that underscore his commitment to justice. His extensive experience as an associate at Hughes, Thorsness, Gantz, Powell & Brundin from 1991 to 1996 further solidified his expertise in litigation and client advocacy. John is known not only for his legal acumen but also for his compassionate approach to clients facing challenging circumstances. He is dedicated to educating the public on their rights regarding medical care and the legal recourse available to them. As a key figure in Anchorage’s legal community, John J. Tiemessen continues to be a powerful voice for those impacted by medical malpractice, ensuring that their stories are heard and justice is served.
About Medical Malpractice Law
Medical malpractice attorneys represent patients harmed by healthcare provider negligence. They fight for compensation for injuries caused by medical errors. Common matters include surgical errors, misdiagnosis, birth injuries, medication errors.
Credentials
Education
1991 Willamette University College of Law JD - Juris Doctor 1987 Arizona State University BS - Bachelor of Science
Languages
English
Recognition & Involvement
Publications
2004 21 Alaska L. Rev. 77 The Golden Retriever Rule: Alaska's Identity Privilege for Animal Adoption Agencies and for Adoptive Animal Owners
Associations
2013 - Present Association of Defense Trial Attorneys Member 1995 - Present Defense Research Institute Member 1994 - Present College Rotary Past President 2010 - 2011 Western States Bar Conference Past President 2007 - 2008 Alaska Bar Association Former President
Speaking
2018 UAA Dental Hygiene Program Liability for Dental Hygenists UAA
Other Medical Malpractice Attorneys in Anchorage, AK
Updated: Jun 09, 2026